package app

import (
	"context"
	"database/sql"
	"encoding/json"
	"errors"
	"fmt"
	"strings"
	"time"

	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgconn"
	"github.com/jackc/pgx/v5/pgxpool"
	goredis "github.com/redis/go-redis/v9"
	"go.uber.org/zap"

	"github.com/geo-platform/tenant-api/internal/shared/auth"
	"github.com/geo-platform/tenant-api/internal/shared/config"
	"github.com/geo-platform/tenant-api/internal/shared/response"
)

type MediaSupplyService struct {
	pool   *pgxpool.Pool
	redis  *goredis.Client
	logger *zap.Logger
	cfg    config.Provider
	client *MeijiequanClient
}

func NewMediaSupplyService(pool *pgxpool.Pool, redis *goredis.Client, logger *zap.Logger, cfg config.Provider) *MediaSupplyService {
	current := config.Config{}
	if cfg != nil && cfg.Current() != nil {
		current = *cfg.Current()
	}
	client := NewMeijiequanClient(redis, current.MediaSupply.Meijiequan)
	return &MediaSupplyService{
		pool:   pool,
		redis:  redis,
		logger: logger,
		cfg:    cfg,
		client: client,
	}
}

func (s *MediaSupplyService) mediaSupplyConfig() config.MediaSupplyConfig {
	if s != nil && s.cfg != nil && s.cfg.Current() != nil {
		cfg := s.cfg.Current().MediaSupply
		if s.client != nil {
			s.client.SetConfig(cfg.Meijiequan)
		}
		return cfg
	}
	var cfg config.MediaSupplyConfig
	config.NormalizeMediaSupplyConfig(&cfg)
	if s != nil && s.client != nil {
		s.client.SetConfig(cfg.Meijiequan)
	}
	return cfg
}

func (s *MediaSupplyService) ListResources(ctx context.Context, req ListSupplierMediaResourcesRequest) (*ListSupplierMediaResourcesResponse, error) {
	if s == nil || s.pool == nil {
		return nil, response.ErrServiceUnavailable(50360, "media_supply_store_unavailable", "媒体投稿服务暂不可用")
	}
	page, pageSize := normalizeMediaSupplyPagination(req.Page, req.PageSize)
	args := []any{mediaSupplySupplierMeijiequan}
	where := []string{"r.supplier = $1", "r.deleted_at IS NULL"}
	if !req.IncludeHidden {
		where = append(where, "r.customer_visible = TRUE")
	}
	cfg := s.mediaSupplyConfig()
	sellPriceSQL := mediaSupplySellPriceSQL(cfg)
	if req.ModelID > 0 {
		args = append(args, req.ModelID)
		where = append(where, fmt.Sprintf("r.model_id = $%d", len(args)))
	}
	if keyword := strings.TrimSpace(req.Keyword); keyword != "" {
		args = append(args, "%"+keyword+"%")
		where = append(where, fmt.Sprintf("r.name ILIKE $%d", len(args)))
	}
	if keyword := strings.TrimSpace(req.RemarkKeyword); keyword != "" {
		args = append(args, "%"+keyword+"%")
		where = append(where, fmt.Sprintf("r.resource_remark ILIKE $%d", len(args)))
	}
	if value := strings.TrimSpace(req.ChannelType); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.channel_type = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.Portal); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.raw_json->>'zonghemenhu' = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.Region); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.region = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.InclusionEffect); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.inclusion_effect = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.SpecialIndustry); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.raw_json->>'tebiehangye' = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.LinkType); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.link_type = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.DeliverySpeed); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.delivery_speed = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.AIInclude); value != "" && value != "全部" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.raw_json->>'aiInclude' = $%d", len(args)))
	}
	if value := strings.TrimSpace(req.OtherOption); value != "" {
		args = append(args, value)
		where = append(where, fmt.Sprintf("r.raw_json->>'otherOption' = $%d", len(args)))
	}
	if req.MinPriceCents > 0 {
		args = append(args, req.MinPriceCents)
		where = append(where, fmt.Sprintf("(%s) >= $%d", sellPriceSQL, len(args)))
	}
	if req.MaxPriceCents > 0 {
		args = append(args, req.MaxPriceCents)
		where = append(where, fmt.Sprintf("(%s) <= $%d", sellPriceSQL, len(args)))
	}
	whereSQL := strings.Join(where, " AND ")
	orderSQL := mediaSupplyResourceOrderSQL(req.Sort, sellPriceSQL)
	var total int64
	if err := s.pool.QueryRow(ctx, `
		SELECT COUNT(*)
		FROM supplier_media_resources r
		LEFT JOIN supplier_media_price_overrides o
		  ON o.resource_id = r.id AND o.price_type = 'price'
		WHERE `+whereSQL, args...).Scan(&total); err != nil {
		return nil, response.ErrInternal(50060, "media_supply_resource_count_failed", "媒体资源统计失败")
	}
	args = append(args, pageSize, (page-1)*pageSize)
	rows, err := s.pool.Query(ctx, `
		SELECT r.id, r.supplier, r.supplier_resource_id, r.model_id, r.name, r.status,
		       r.cost_price_cents, r.cost_prices_json, r.sale_price_label,
		       r.resource_url, r.baidu_weight, r.resource_remark, r.customer_visible, r.channel_type,
		       r.region, r.inclusion_effect, r.link_type, r.publish_rate, r.delivery_speed,
		       r.supplier_updated_at, r.last_synced_at, r.raw_json,
		       COALESCE(o.sell_price_cents, 0), COALESCE(o.enabled, false)
		FROM supplier_media_resources r
		LEFT JOIN supplier_media_price_overrides o
		  ON o.resource_id = r.id AND o.price_type = 'price'
		WHERE `+whereSQL+`
		ORDER BY `+orderSQL+`
		LIMIT $`+fmt.Sprint(len(args)-1)+` OFFSET $`+fmt.Sprint(len(args))+`
	`, args...)
	if err != nil {
		return nil, response.ErrInternal(50061, "media_supply_resource_query_failed", "媒体资源读取失败")
	}
	defer rows.Close()
	items := make([]SupplierMediaResource, 0, pageSize)
	for rows.Next() {
		var item SupplierMediaResource
		var costPricesRaw []byte
		var raw []byte
		var overrideCents int64
		var overrideEnabled bool
		if err := rows.Scan(
			&item.ID,
			&item.Supplier,
			&item.SupplierResourceID,
			&item.ModelID,
			&item.Name,
			&item.Status,
			&item.CostPriceCents,
			&costPricesRaw,
			&item.SalePriceLabel,
			&item.ResourceURL,
			&item.BaiduWeight,
			&item.ResourceRemark,
			&item.CustomerVisible,
			&item.ChannelType,
			&item.Region,
			&item.InclusionEffect,
			&item.LinkType,
			&item.PublishRate,
			&item.DeliverySpeed,
			&item.SupplierUpdatedAt,
			&item.LastSyncedAt,
			&raw,
			&overrideCents,
			&overrideEnabled,
		); err != nil {
			return nil, response.ErrInternal(50062, "media_supply_resource_scan_failed", "媒体资源解析失败")
		}
		_ = json.Unmarshal(costPricesRaw, &item.CostPrices)
		if item.CostPrices == nil {
			item.CostPrices = map[string]int64{}
		}
		item.SellPriceCents = mediaSupplySellPrice(item.CostPriceCents, overrideCents, overrideEnabled, cfg.DefaultMarkupPercent, cfg.MinimumMarkupCents)
		item.Raw = json.RawMessage(raw)
		items = append(items, item)
	}
	return &ListSupplierMediaResourcesResponse{Items: items, Total: total, Page: page, PageSize: pageSize}, nil
}

func (s *MediaSupplyService) ListCustomerResources(ctx context.Context, req ListSupplierMediaResourcesRequest) (*ListCustomerSupplierMediaResourcesResponse, error) {
	req.IncludeHidden = false
	data, err := s.ListResources(ctx, req)
	if err != nil {
		return nil, err
	}
	items := make([]CustomerSupplierMediaResource, 0, len(data.Items))
	for _, item := range data.Items {
		items = append(items, CustomerSupplierMediaResource{
			ID:                 item.ID,
			SupplierResourceID: item.SupplierResourceID,
			ModelID:            item.ModelID,
			Name:               item.Name,
			Status:             item.Status,
			SellPriceCents:     item.SellPriceCents,
			ResourceURL:        item.ResourceURL,
			BaiduWeight:        item.BaiduWeight,
			ResourceRemark:     item.ResourceRemark,
			ChannelType:        item.ChannelType,
			Region:             item.Region,
			InclusionEffect:    item.InclusionEffect,
			LinkType:           item.LinkType,
			PublishRate:        item.PublishRate,
			DeliverySpeed:      item.DeliverySpeed,
			LastSyncedAt:       item.LastSyncedAt,
		})
	}
	return &ListCustomerSupplierMediaResourcesResponse{
		Items:    items,
		Total:    data.Total,
		Page:     data.Page,
		PageSize: data.PageSize,
	}, nil
}

func (s *MediaSupplyService) ListCustomerResourcesByIDs(ctx context.Context, ids []int64, modelID int) (*ListCustomerSupplierMediaResourcesResponse, error) {
	if s == nil || s.pool == nil {
		return nil, response.ErrServiceUnavailable(50360, "media_supply_store_unavailable", "媒体投稿服务暂不可用")
	}
	ids = normalizeMediaSupplyResourceIDs(ids)
	if len(ids) == 0 {
		return &ListCustomerSupplierMediaResourcesResponse{
			Items:    []CustomerSupplierMediaResource{},
			Total:    0,
			Page:     1,
			PageSize: 0,
		}, nil
	}

	args := []any{mediaSupplySupplierMeijiequan, ids}
	where := []string{
		"r.supplier = $1",
		"r.id = ANY($2::BIGINT[])",
		"r.deleted_at IS NULL",
		"r.customer_visible = TRUE",
	}
	if modelID > 0 {
		args = append(args, modelID)
		where = append(where, fmt.Sprintf("r.model_id = $%d", len(args)))
	}

	cfg := s.mediaSupplyConfig()
	rows, err := s.pool.Query(ctx, `
		SELECT r.id, r.supplier_resource_id, r.model_id, r.name, r.status,
		       `+mediaSupplySellPriceSQL(cfg)+`,
		       r.resource_url, r.baidu_weight, r.resource_remark, r.channel_type,
		       r.region, r.inclusion_effect, r.link_type, r.publish_rate, r.delivery_speed,
		       r.last_synced_at
		FROM supplier_media_resources r
		LEFT JOIN supplier_media_price_overrides o
		  ON o.resource_id = r.id AND o.price_type = 'price'
		WHERE `+strings.Join(where, " AND ")+`
		ORDER BY array_position($2::BIGINT[], r.id)
	`, args...)
	if err != nil {
		return nil, response.ErrInternal(50061, "media_supply_resource_query_failed", "媒体资源读取失败")
	}
	defer rows.Close()

	items := make([]CustomerSupplierMediaResource, 0, len(ids))
	for rows.Next() {
		var item CustomerSupplierMediaResource
		if err := rows.Scan(
			&item.ID,
			&item.SupplierResourceID,
			&item.ModelID,
			&item.Name,
			&item.Status,
			&item.SellPriceCents,
			&item.ResourceURL,
			&item.BaiduWeight,
			&item.ResourceRemark,
			&item.ChannelType,
			&item.Region,
			&item.InclusionEffect,
			&item.LinkType,
			&item.PublishRate,
			&item.DeliverySpeed,
			&item.LastSyncedAt,
		); err != nil {
			return nil, response.ErrInternal(50062, "media_supply_resource_scan_failed", "媒体资源解析失败")
		}
		items = append(items, item)
	}
	if err := rows.Err(); err != nil {
		return nil, response.ErrInternal(50062, "media_supply_resource_scan_failed", "媒体资源解析失败")
	}
	return &ListCustomerSupplierMediaResourcesResponse{
		Items:    items,
		Total:    int64(len(items)),
		Page:     1,
		PageSize: len(items),
	}, nil
}

func (s *MediaSupplyService) QueueSync(ctx context.Context, modelID int) (int64, error) {
	actor := auth.MustActor(ctx)
	if !isTenantAdmin(actor) {
		return 0, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	if modelID <= 0 {
		modelID = 1
	}
	if !isKnownMeijiequanModel(modelID) {
		return 0, response.ErrBadRequest(40060, "invalid_media_supply_model", "不支持的媒体资源类型")
	}
	var id int64
	if err := s.pool.QueryRow(ctx, `
		WITH existing AS (
		    SELECT id
		    FROM media_supply_sync_jobs
		    WHERE supplier = $1
		      AND status IN ($4::varchar, $5::varchar)
		    ORDER BY created_at ASC
		    LIMIT 1
		), inserted AS (
		    INSERT INTO media_supply_sync_jobs (supplier, model_id, requested_by)
		    SELECT $1, $2, $3
		    WHERE NOT EXISTS (SELECT 1 FROM existing)
		    RETURNING id
		)
		SELECT id FROM inserted
		UNION ALL
		SELECT id FROM existing
		LIMIT 1
	`, mediaSupplySupplierMeijiequan, modelID, actor.UserID, mediaSupplySyncStatusQueued, mediaSupplySyncStatusRunning).Scan(&id); err != nil {
		return 0, response.ErrInternal(50063, "media_supply_sync_queue_failed", "媒体资源同步排队失败")
	}
	return id, nil
}

func (s *MediaSupplyService) SearchOptions(ctx context.Context, modelID int) (*MediaSupplySearchOptionsResponse, error) {
	if modelID <= 0 {
		modelID = 1
	}
	if !isKnownMeijiequanModel(modelID) {
		return nil, response.ErrBadRequest(40060, "invalid_media_supply_model", "不支持的媒体资源类型")
	}
	_ = s.mediaSupplyConfig()
	data, err := s.client.SearchOptions(ctx, modelID)
	if err != nil {
		return nil, mediaSupplyClientError(err)
	}
	return data, nil
}

func (s *MediaSupplyService) ImportSession(ctx context.Context, req ImportMeijiequanSessionRequest) (*MeijiequanSessionStatus, error) {
	if !isTenantAdmin(auth.MustActor(ctx)) {
		return nil, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	_ = s.mediaSupplyConfig()
	status, err := s.client.ImportSession(ctx, req)
	if err != nil {
		return nil, mediaSupplyClientError(err)
	}
	return status, nil
}

func (s *MediaSupplyService) LoginConfiguredAccount(ctx context.Context) (*MeijiequanSessionStatus, error) {
	if !isTenantAdmin(auth.MustActor(ctx)) {
		return nil, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	_ = s.mediaSupplyConfig()
	status, err := s.client.LoginWithConfiguredAccount(ctx)
	if err != nil {
		return nil, mediaSupplyClientError(err)
	}
	return status, nil
}

func (s *MediaSupplyService) SessionStatus(ctx context.Context) (*MeijiequanSessionStatus, error) {
	if !isTenantAdmin(auth.MustActor(ctx)) {
		return nil, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	_ = s.mediaSupplyConfig()
	status, err := s.client.SessionStatus(ctx)
	if err != nil {
		return nil, mediaSupplyClientError(err)
	}
	return status, nil
}

func (s *MediaSupplyService) SetResourcePrice(ctx context.Context, resourceID int64, req SetSupplierMediaPriceRequest) error {
	if actor, ok := auth.ActorFromCtx(ctx); ok && !isTenantAdmin(actor) {
		return response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	priceType := normalizeMediaSupplyPriceType(req.PriceType)
	if req.SellPriceCents < 0 {
		return response.ErrBadRequest(40061, "invalid_media_supply_price", "媒体售价不能为负数")
	}
	cost, err := s.resourceCostForPriceType(ctx, resourceID, priceType)
	if err != nil {
		return err
	}
	sellPriceCents := mediaSupplyRoundUpToYuan(req.SellPriceCents)
	if sellPriceCents < cost {
		return response.ErrConflict(40960, "media_supply_price_below_cost", "媒体售价不能低于成本价")
	}
	enabled := true
	if req.Enabled != nil {
		enabled = *req.Enabled
	}
	var updatedBy any
	if actor, ok := auth.ActorFromCtx(ctx); ok {
		updatedBy = actor.UserID
	}
	if _, err := s.pool.Exec(ctx, `
		INSERT INTO supplier_media_price_overrides (resource_id, price_type, sell_price_cents, enabled, updated_by)
		VALUES ($1, $2, $3, $4, $5)
		ON CONFLICT (resource_id, price_type) DO UPDATE SET
		    sell_price_cents = EXCLUDED.sell_price_cents,
		    enabled = EXCLUDED.enabled,
		    updated_by = EXCLUDED.updated_by,
		    updated_at = NOW()
	`, resourceID, priceType, sellPriceCents, enabled, updatedBy); err != nil {
		return response.ErrInternal(50064, "media_supply_price_update_failed", "媒体价格更新失败")
	}
	return nil
}

func (s *MediaSupplyService) SetResourceVisibility(ctx context.Context, resourceID int64, req SetSupplierMediaVisibilityRequest) error {
	if actor, ok := auth.ActorFromCtx(ctx); ok && !isTenantAdmin(actor) {
		return response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	tag, err := s.pool.Exec(ctx, `
		UPDATE supplier_media_resources
		SET customer_visible = $3, updated_at = NOW()
		WHERE id = $1 AND supplier = $2 AND deleted_at IS NULL
	`, resourceID, mediaSupplySupplierMeijiequan, req.CustomerVisible)
	if err != nil {
		return response.ErrInternal(50087, "media_supply_visibility_update_failed", "媒体展示状态更新失败")
	}
	if tag.RowsAffected() == 0 {
		return response.ErrNotFound(40460, "media_supply_resource_not_found", "媒体资源不存在或已下架")
	}
	return nil
}

func (s *MediaSupplyService) CreateOrder(ctx context.Context, req CreateMediaSupplyOrderRequest) (*CreateMediaSupplyOrderResponse, error) {
	actor := auth.MustActor(ctx)
	brandID, err := requireCurrentBrandID(ctx)
	if err != nil {
		return nil, err
	}
	if req.ModelID <= 0 || !isKnownMeijiequanModel(req.ModelID) {
		return nil, response.ErrBadRequest(40060, "invalid_media_supply_model", "不支持的媒体资源类型")
	}
	if len(req.Items) == 0 {
		return nil, response.ErrBadRequest(40062, "media_supply_order_items_required", "请至少选择一个媒体资源")
	}
	if len(req.Items) > 100 {
		return nil, response.ErrBadRequest(40063, "media_supply_order_items_too_many", "一次投稿选择的媒体资源过多")
	}
	title := strings.TrimSpace(req.Title)
	content := strings.TrimSpace(req.Content)
	if req.ArticleID != nil && *req.ArticleID > 0 {
		articleTitle, articleContent, loadErr := s.loadArticleContent(ctx, actor.TenantID, brandID, *req.ArticleID)
		if loadErr != nil {
			return nil, loadErr
		}
		if title == "" {
			title = articleTitle
		}
		if content == "" {
			content = articleContent
		}
	}
	if title == "" {
		return nil, response.ErrBadRequest(40064, "media_supply_order_title_required", "请输入投稿标题")
	}
	if content == "" {
		return nil, response.ErrBadRequest(40065, "media_supply_order_content_required", "请输入投稿内容")
	}

	tx, err := s.pool.Begin(ctx)
	if err != nil {
		return nil, response.ErrInternal(50065, "media_supply_order_begin_failed", "媒体投稿创建失败")
	}
	defer tx.Rollback(ctx)

	cfg := s.mediaSupplyConfig()
	seen := make(map[int64]string, len(req.Items))
	orderItems := make([]MediaSupplyOrderItem, 0, len(req.Items))
	var costTotal, sellTotal int64
	for _, requested := range req.Items {
		if requested.ResourceID <= 0 {
			return nil, response.ErrBadRequest(40066, "invalid_media_supply_resource", "媒体资源参数不正确")
		}
		priceType := normalizeMediaSupplyPriceType(requested.PriceType)
		if existing, exists := seen[requested.ResourceID]; exists && existing == priceType {
			continue
		}
		seen[requested.ResourceID] = priceType
		resource, overrideCents, overrideEnabled, loadErr := s.loadResourceForOrder(ctx, tx, requested.ResourceID, req.ModelID, priceType)
		if loadErr != nil {
			return nil, loadErr
		}
		cost := costForResourcePriceType(resource, priceType)
		if cost <= 0 {
			return nil, response.ErrConflict(40961, "media_supply_cost_missing", "部分媒体资源成本价缺失，请联系管理员处理")
		}
		sell := mediaSupplySellPrice(cost, overrideCents, overrideEnabled, cfg.DefaultMarkupPercent, cfg.MinimumMarkupCents)
		if sell < cost {
			return nil, response.ErrConflict(40960, "media_supply_price_below_cost", "媒体售价不能低于成本价")
		}
		costTotal += cost
		sellTotal += sell
		orderItems = append(orderItems, MediaSupplyOrderItem{
			ResourceID:           resource.ID,
			SupplierResourceID:   resource.SupplierResourceID,
			PriceType:            priceType,
			ResourceNameSnapshot: resource.Name,
			LockedCostPriceCents: cost,
			LockedSellPriceCents: sell,
		})
	}
	if len(orderItems) == 0 {
		return nil, response.ErrBadRequest(40062, "media_supply_order_items_required", "请至少选择一个媒体资源")
	}
	requestPayload, _ := json.Marshal(map[string]any{
		"article_id":  req.ArticleID,
		"model_id":    req.ModelID,
		"title":       title,
		"remark":      strings.TrimSpace(req.Remark),
		"order_brand": strings.TrimSpace(req.OrderBrand),
		"items":       req.Items,
		"extra":       req.Extra,
	})
	var orderID int64
	if err := tx.QueryRow(ctx, `
		INSERT INTO media_supply_orders (
		    tenant_id, workspace_id, brand_id, user_id, article_id, supplier, model_id, status,
		    title, content_snapshot, remark, order_brand, cost_total_cents, sell_total_cents,
		    wallet_debit_cents, wallet_debited_at, request_payload_json
		)
		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, NOW(), $16)
		RETURNING id
	`, actor.TenantID, actor.PrimaryWorkspaceID, brandID, actor.UserID, nullableInt64Ptr(req.ArticleID),
		mediaSupplySupplierMeijiequan, req.ModelID, mediaSupplyOrderStatusQueued, title, content,
		nullableTrimmedString(req.Remark), nullableTrimmedString(req.OrderBrand), costTotal, sellTotal, sellTotal, requestPayload,
	).Scan(&orderID); err != nil {
		return nil, response.ErrInternal(50066, "media_supply_order_create_failed", "媒体投稿创建失败")
	}
	balanceAfter, err := s.debitMediaSupplyWallet(ctx, tx, actor.TenantID, actor.UserID, sellTotal, orderID, title, actor.UserID)
	if err != nil {
		return nil, err
	}
	for _, item := range orderItems {
		if _, err := tx.Exec(ctx, `
			INSERT INTO media_supply_order_items (
			    order_id, resource_id, supplier_resource_id, price_type, resource_name_snapshot,
			    locked_cost_price_cents, locked_sell_price_cents
			)
			VALUES ($1, $2, $3, $4, $5, $6, $7)
		`, orderID, item.ResourceID, item.SupplierResourceID, item.PriceType, item.ResourceNameSnapshot,
			item.LockedCostPriceCents, item.LockedSellPriceCents); err != nil {
			return nil, response.ErrInternal(50067, "media_supply_order_item_create_failed", "媒体投稿明细创建失败")
		}
	}
	if err := tx.Commit(ctx); err != nil {
		return nil, response.ErrInternal(50068, "media_supply_order_commit_failed", "媒体投稿创建失败")
	}
	return &CreateMediaSupplyOrderResponse{
		OrderID:           orderID,
		Status:            mediaSupplyOrderStatusQueued,
		CostTotalCents:    costTotal,
		SellTotalCents:    sellTotal,
		BalanceAfterCents: balanceAfter,
	}, nil
}

func (s *MediaSupplyService) WalletStatus(ctx context.Context) (*MediaSupplyWalletStatus, error) {
	actor := auth.MustActor(ctx)
	if s == nil || s.pool == nil {
		return nil, response.ErrServiceUnavailable(50360, "media_supply_store_unavailable", "媒体投稿服务暂不可用")
	}
	if err := s.ensureWalletRow(ctx, s.pool, actor.TenantID, actor.UserID); err != nil {
		return nil, response.ErrInternal(50077, "media_supply_wallet_prepare_failed", "媒体投稿余额初始化失败")
	}
	var status MediaSupplyWalletStatus
	var ledgerTotal sql.NullInt64
	var lastLedgerAt sql.NullTime
	if err := s.pool.QueryRow(ctx, `
		SELECT w.tenant_id, w.user_id, w.balance_cents, w.updated_at,
		       COUNT(l.id), MAX(l.created_at)
		FROM media_supply_user_wallets w
		LEFT JOIN media_supply_wallet_ledgers l
		  ON l.tenant_id = w.tenant_id AND l.user_id = w.user_id
		WHERE w.tenant_id = $1 AND w.user_id = $2
		GROUP BY w.tenant_id, w.user_id, w.balance_cents, w.updated_at
	`, actor.TenantID, actor.UserID).Scan(
		&status.TenantID,
		&status.UserID,
		&status.BalanceCents,
		&status.UpdatedAt,
		&ledgerTotal,
		&lastLedgerAt,
	); err != nil {
		return nil, response.ErrInternal(50078, "media_supply_wallet_lookup_failed", "媒体投稿余额读取失败")
	}
	if ledgerTotal.Valid {
		status.LedgerTotal = &ledgerTotal.Int64
	}
	if lastLedgerAt.Valid {
		status.LastLedgerAt = &lastLedgerAt.Time
	}
	return &status, nil
}

func (s *MediaSupplyService) ListWalletLedgers(ctx context.Context, req ListMediaSupplyWalletLedgersRequest) (*ListMediaSupplyWalletLedgersResponse, error) {
	actor := auth.MustActor(ctx)
	page, pageSize := normalizeMediaSupplyPagination(req.Page, req.PageSize)
	userID := actor.UserID
	if req.UserID > 0 && req.UserID != actor.UserID {
		if !isTenantAdmin(actor) {
			return nil, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
		}
		if err := s.ensureWalletUserInTenant(ctx, actor.TenantID, req.UserID); err != nil {
			return nil, err
		}
		userID = req.UserID
	}
	args := []any{actor.TenantID, userID}
	where := []string{"l.tenant_id = $1", "l.user_id = $2"}
	if req.CreatedFrom != nil {
		args = append(args, *req.CreatedFrom)
		where = append(where, fmt.Sprintf("l.created_at >= $%d", len(args)))
	}
	if req.CreatedTo != nil {
		args = append(args, *req.CreatedTo)
		where = append(where, fmt.Sprintf("l.created_at < $%d", len(args)))
	}
	whereSQL := strings.Join(where, " AND ")
	var total int64
	if err := s.pool.QueryRow(ctx, `SELECT COUNT(*) FROM media_supply_wallet_ledgers l WHERE `+whereSQL, args...).Scan(&total); err != nil {
		return nil, response.ErrInternal(50079, "media_supply_wallet_ledger_count_failed", "媒体投稿账单统计失败")
	}
	args = append(args, pageSize, (page-1)*pageSize)
	rows, err := s.pool.Query(ctx, `
		SELECT l.id, l.tenant_id, l.user_id, l.order_id, o.title, l.delta_cents,
		       l.balance_after_cents, l.reason, l.note, l.created_by, l.created_at
		FROM media_supply_wallet_ledgers l
		LEFT JOIN media_supply_orders o ON o.id = l.order_id
		WHERE `+whereSQL+`
		ORDER BY l.created_at DESC, l.id DESC
		LIMIT $`+fmt.Sprint(len(args)-1)+` OFFSET $`+fmt.Sprint(len(args))+`
	`, args...)
	if err != nil {
		return nil, response.ErrInternal(50080, "media_supply_wallet_ledger_query_failed", "媒体投稿账单读取失败")
	}
	defer rows.Close()
	items := make([]MediaSupplyWalletLedger, 0, pageSize)
	for rows.Next() {
		var item MediaSupplyWalletLedger
		var orderID sql.NullInt64
		var orderTitle sql.NullString
		var note sql.NullString
		var createdBy sql.NullInt64
		if err := rows.Scan(
			&item.ID,
			&item.TenantID,
			&item.UserID,
			&orderID,
			&orderTitle,
			&item.DeltaCents,
			&item.BalanceAfterCents,
			&item.Reason,
			&note,
			&createdBy,
			&item.CreatedAt,
		); err != nil {
			return nil, response.ErrInternal(50081, "media_supply_wallet_ledger_scan_failed", "媒体投稿账单解析失败")
		}
		if orderID.Valid {
			item.OrderID = &orderID.Int64
		}
		if orderTitle.Valid {
			item.OrderTitle = &orderTitle.String
		}
		if note.Valid {
			noteText := mediaSupplyPublicGenericErrorMessage(note.String)
			item.Note = &noteText
		}
		if createdBy.Valid {
			item.CreatedBy = &createdBy.Int64
		}
		items = append(items, item)
	}
	return &ListMediaSupplyWalletLedgersResponse{Items: items, Total: total, Page: page, PageSize: pageSize}, nil
}

func (s *MediaSupplyService) AdjustWallet(ctx context.Context, req AdjustMediaSupplyWalletRequest) (*MediaSupplyWalletStatus, error) {
	actor := auth.MustActor(ctx)
	if !isTenantAdmin(actor) {
		return nil, response.ErrForbidden(40360, "media_supply_admin_required", "需要租户管理员权限")
	}
	if req.UserID <= 0 {
		return nil, response.ErrBadRequest(40067, "invalid_media_supply_wallet_user", "用户参数不正确")
	}
	if req.DeltaCents == 0 {
		return nil, response.ErrBadRequest(40068, "invalid_media_supply_wallet_delta", "调整金额不能为 0")
	}
	if err := s.ensureWalletUserInTenant(ctx, actor.TenantID, req.UserID); err != nil {
		return nil, err
	}
	tx, err := s.pool.Begin(ctx)
	if err != nil {
		return nil, response.ErrInternal(50082, "media_supply_wallet_begin_failed", "媒体投稿余额调整失败")
	}
	defer tx.Rollback(ctx)
	balance, err := s.lockMediaSupplyWallet(ctx, tx, actor.TenantID, req.UserID)
	if err != nil {
		return nil, err
	}
	balanceAfter := balance + req.DeltaCents
	if balanceAfter < 0 {
		return nil, response.ErrConflict(40965, "media_supply_balance_insufficient", "媒体投稿余额不足")
	}
	if _, err := tx.Exec(ctx, `
		UPDATE media_supply_user_wallets
		SET balance_cents = $3, updated_at = NOW()
		WHERE tenant_id = $1 AND user_id = $2
	`, actor.TenantID, req.UserID, balanceAfter); err != nil {
		return nil, response.ErrInternal(50083, "media_supply_wallet_update_failed", "媒体投稿余额更新失败")
	}
	reason := "adjustment"
	if req.DeltaCents > 0 {
		reason = "recharge"
	}
	if _, err := tx.Exec(ctx, `
		INSERT INTO media_supply_wallet_ledgers (
		    tenant_id, user_id, delta_cents, balance_after_cents, reason, note, created_by
		)
		VALUES ($1, $2, $3, $4, $5, $6, $7)
	`, actor.TenantID, req.UserID, req.DeltaCents, balanceAfter, reason, nullableTrimmedString(req.Note), actor.UserID); err != nil {
		return nil, response.ErrInternal(50084, "media_supply_wallet_ledger_create_failed", "媒体投稿账单创建失败")
	}
	if err := tx.Commit(ctx); err != nil {
		return nil, response.ErrInternal(50085, "media_supply_wallet_commit_failed", "媒体投稿余额调整失败")
	}
	return &MediaSupplyWalletStatus{
		TenantID:     actor.TenantID,
		UserID:       req.UserID,
		BalanceCents: balanceAfter,
		UpdatedAt:    time.Now().UTC(),
	}, nil
}

type mediaSupplyWalletExecutor interface {
	Exec(context.Context, string, ...any) (pgconn.CommandTag, error)
}

func (s *MediaSupplyService) ensureWalletRow(ctx context.Context, q mediaSupplyWalletExecutor, tenantID, userID int64) error {
	_, err := q.Exec(ctx, `
		INSERT INTO media_supply_user_wallets (tenant_id, user_id, balance_cents)
		VALUES ($1, $2, 0)
		ON CONFLICT (tenant_id, user_id) DO NOTHING
	`, tenantID, userID)
	return err
}

func (s *MediaSupplyService) ensureWalletUserInTenant(ctx context.Context, tenantID, userID int64) error {
	var exists bool
	if err := s.pool.QueryRow(ctx, `
		SELECT EXISTS (
			SELECT 1
			FROM tenant_memberships
			WHERE tenant_id = $1 AND user_id = $2 AND deleted_at IS NULL
		)
	`, tenantID, userID).Scan(&exists); err != nil {
		return response.ErrInternal(50086, "media_supply_wallet_user_lookup_failed", "媒体投稿余额用户校验失败")
	}
	if !exists {
		return response.ErrNotFound(40463, "media_supply_wallet_user_not_found", "用户不存在或不属于当前租户")
	}
	return nil
}

func (s *MediaSupplyService) lockMediaSupplyWallet(ctx context.Context, tx pgx.Tx, tenantID, userID int64) (int64, error) {
	if err := s.ensureWalletRow(ctx, tx, tenantID, userID); err != nil {
		return 0, response.ErrInternal(50077, "media_supply_wallet_prepare_failed", "媒体投稿余额初始化失败")
	}
	var balance int64
	if err := tx.QueryRow(ctx, `
		SELECT balance_cents
		FROM media_supply_user_wallets
		WHERE tenant_id = $1 AND user_id = $2
		FOR UPDATE
	`, tenantID, userID).Scan(&balance); err != nil {
		return 0, response.ErrInternal(50078, "media_supply_wallet_lookup_failed", "媒体投稿余额读取失败")
	}
	return balance, nil
}

func (s *MediaSupplyService) debitMediaSupplyWallet(ctx context.Context, tx pgx.Tx, tenantID, userID, amountCents, orderID int64, orderTitle string, createdBy int64) (int64, error) {
	if amountCents <= 0 {
		balance, err := s.lockMediaSupplyWallet(ctx, tx, tenantID, userID)
		return balance, err
	}
	balance, err := s.lockMediaSupplyWallet(ctx, tx, tenantID, userID)
	if err != nil {
		return 0, err
	}
	if balance < amountCents {
		return 0, response.ErrConflict(40965, "media_supply_balance_insufficient", "媒体投稿余额不足")
	}
	balanceAfter := balance - amountCents
	if _, err := tx.Exec(ctx, `
		UPDATE media_supply_user_wallets
		SET balance_cents = $3, updated_at = NOW()
		WHERE tenant_id = $1 AND user_id = $2
	`, tenantID, userID, balanceAfter); err != nil {
		return 0, response.ErrInternal(50083, "media_supply_wallet_update_failed", "媒体投稿余额更新失败")
	}
	if _, err := tx.Exec(ctx, `
		INSERT INTO media_supply_wallet_ledgers (
		    tenant_id, user_id, order_id, delta_cents, balance_after_cents, reason, note, created_by
		)
		VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
	`, tenantID, userID, orderID, -amountCents, balanceAfter, "order_debit", nullableTrimmedString(orderTitle), createdBy); err != nil {
		return 0, response.ErrInternal(50084, "media_supply_wallet_ledger_create_failed", "媒体投稿账单创建失败")
	}
	return balanceAfter, nil
}

func (s *MediaSupplyService) refundMediaSupplyWalletForOrder(ctx context.Context, tx pgx.Tx, orderID int64, note string) error {
	var tenantID, userID, debitCents int64
	var refundedAt sql.NullTime
	var title string
	if err := tx.QueryRow(ctx, `
		SELECT tenant_id, user_id, wallet_debit_cents, wallet_refunded_at, title
		FROM media_supply_orders
		WHERE id = $1
		FOR UPDATE
	`, orderID).Scan(&tenantID, &userID, &debitCents, &refundedAt, &title); err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return response.ErrNotFound(40462, "media_supply_order_not_found", "媒体投稿订单不存在")
		}
		return response.ErrInternal(50076, "media_supply_order_scan_failed", "媒体投稿订单解析失败")
	}
	if refundedAt.Valid || debitCents <= 0 {
		return nil
	}
	balance, err := s.lockMediaSupplyWallet(ctx, tx, tenantID, userID)
	if err != nil {
		return err
	}
	balanceAfter := balance + debitCents
	if _, err := tx.Exec(ctx, `
		UPDATE media_supply_user_wallets
		SET balance_cents = $3, updated_at = NOW()
		WHERE tenant_id = $1 AND user_id = $2
	`, tenantID, userID, balanceAfter); err != nil {
		return response.ErrInternal(50083, "media_supply_wallet_update_failed", "媒体投稿余额更新失败")
	}
	if _, err := tx.Exec(ctx, `
		UPDATE media_supply_orders
		SET wallet_refunded_at = NOW(), updated_at = NOW()
		WHERE id = $1 AND wallet_refunded_at IS NULL
	`, orderID); err != nil {
		return response.ErrInternal(50066, "media_supply_order_create_failed", "媒体投稿退款状态更新失败")
	}
	ledgerNote := strings.TrimSpace(note)
	if ledgerNote == "" {
		ledgerNote = title
	}
	if _, err := tx.Exec(ctx, `
		INSERT INTO media_supply_wallet_ledgers (
		    tenant_id, user_id, order_id, delta_cents, balance_after_cents, reason, note, created_by
		)
		VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
	`, tenantID, userID, orderID, debitCents, balanceAfter, "order_refund", nullableTrimmedString(ledgerNote), userID); err != nil {
		return response.ErrInternal(50084, "media_supply_wallet_ledger_create_failed", "媒体投稿账单创建失败")
	}
	return nil
}

func (s *MediaSupplyService) ListOrders(ctx context.Context, req ListMediaSupplyOrdersRequest) (*ListMediaSupplyOrdersResponse, error) {
	actor := auth.MustActor(ctx)
	page, pageSize := normalizeMediaSupplyPagination(req.Page, req.PageSize)
	args := []any{actor.TenantID, actor.UserID}
	where := []string{"tenant_id = $1", "user_id = $2", "deleted_at IS NULL"}
	if status := strings.TrimSpace(req.Status); status != "" {
		args = append(args, status)
		where = append(where, fmt.Sprintf("status = $%d", len(args)))
	}
	if req.ArticleID != nil && *req.ArticleID > 0 {
		args = append(args, *req.ArticleID)
		where = append(where, fmt.Sprintf("article_id = $%d", len(args)))
	}
	whereSQL := strings.Join(where, " AND ")
	var total int64
	if err := s.pool.QueryRow(ctx, `SELECT COUNT(*) FROM media_supply_orders WHERE `+whereSQL, args...).Scan(&total); err != nil {
		return nil, response.ErrInternal(50069, "media_supply_order_count_failed", "媒体投稿订单统计失败")
	}
	args = append(args, pageSize, (page-1)*pageSize)
	rows, err := s.pool.Query(ctx, `
		SELECT id, tenant_id, workspace_id, brand_id, user_id, article_id, supplier, model_id, status,
		       title, remark, order_brand, external_order_id, external_order_code, supplier_status,
		       cost_total_cents, sell_total_cents, wallet_debit_cents, wallet_debited_at,
		       wallet_refunded_at, error_message, attempt_count, queued_at,
		       submitted_at, completed_at, created_at, updated_at
		FROM media_supply_orders
		WHERE `+whereSQL+`
		ORDER BY created_at DESC, id DESC
		LIMIT $`+fmt.Sprint(len(args)-1)+` OFFSET $`+fmt.Sprint(len(args))+`
	`, args...)
	if err != nil {
		return nil, response.ErrInternal(50070, "media_supply_order_query_failed", "媒体投稿订单读取失败")
	}
	defer rows.Close()
	items := make([]MediaSupplyOrderDetail, 0, pageSize)
	for rows.Next() {
		item, scanErr := scanMediaSupplyOrder(rows)
		if scanErr != nil {
			return nil, scanErr
		}
		items = append(items, item)
	}
	if err := s.attachOrderItems(ctx, items); err != nil {
		return nil, err
	}
	return &ListMediaSupplyOrdersResponse{Items: items, Total: total, Page: page, PageSize: pageSize}, nil
}

func (s *MediaSupplyService) GetOrder(ctx context.Context, orderID int64) (*MediaSupplyOrderDetail, error) {
	actor := auth.MustActor(ctx)
	row := s.pool.QueryRow(ctx, `
		SELECT id, tenant_id, workspace_id, brand_id, user_id, article_id, supplier, model_id, status,
		       title, remark, order_brand, external_order_id, external_order_code, supplier_status,
		       cost_total_cents, sell_total_cents, wallet_debit_cents, wallet_debited_at,
		       wallet_refunded_at, error_message, attempt_count, queued_at,
		       submitted_at, completed_at, created_at, updated_at
		FROM media_supply_orders
		WHERE id = $1 AND tenant_id = $2 AND user_id = $3 AND deleted_at IS NULL
	`, orderID, actor.TenantID, actor.UserID)
	item, err := scanMediaSupplyOrder(row)
	if err != nil {
		return nil, err
	}
	children, err := s.listOrderItems(ctx, orderID)
	if err != nil {
		return nil, err
	}
	item.Items = children
	return &item, nil
}

type mediaResourceSyncStats struct {
	Synced               int
	RemovedPriceOverride int
}

func (s *MediaSupplyService) UpsertSyncedResources(ctx context.Context, resources []UpsertSupplierMediaResourceInput) (int, error) {
	stats, err := s.upsertSyncedResourcesWithStats(ctx, resources)
	return stats.Synced, err
}

func (s *MediaSupplyService) upsertSyncedResourcesWithStats(ctx context.Context, resources []UpsertSupplierMediaResourceInput) (mediaResourceSyncStats, error) {
	if len(resources) == 0 {
		return mediaResourceSyncStats{}, nil
	}
	tx, err := s.pool.Begin(ctx)
	if err != nil {
		return mediaResourceSyncStats{}, err
	}
	defer tx.Rollback(ctx)
	stats := mediaResourceSyncStats{}
	for _, resource := range resources {
		raw := compactJSON(resource.Raw)
		costPrices, _ := json.Marshal(resource.CostPrices)
		if len(costPrices) == 0 {
			costPrices = []byte(`{}`)
		}
		var resourceID int64
		if err := tx.QueryRow(ctx, `
			INSERT INTO supplier_media_resources (
			    supplier, supplier_resource_id, model_id, name, status, cost_price_cents,
			    cost_prices_json, sale_price_label, resource_url, baidu_weight, resource_remark,
			    channel_type, region, inclusion_effect, link_type, publish_rate, delivery_speed,
			    supplier_updated_at, last_synced_at, raw_json
			)
			VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, NOW(), $19)
			ON CONFLICT (supplier, supplier_resource_id) DO UPDATE SET
			    model_id = EXCLUDED.model_id,
			    name = EXCLUDED.name,
			    status = EXCLUDED.status,
			    cost_price_cents = EXCLUDED.cost_price_cents,
			    cost_prices_json = EXCLUDED.cost_prices_json,
			    sale_price_label = EXCLUDED.sale_price_label,
			    resource_url = EXCLUDED.resource_url,
			    baidu_weight = EXCLUDED.baidu_weight,
			    resource_remark = EXCLUDED.resource_remark,
			    channel_type = EXCLUDED.channel_type,
			    region = EXCLUDED.region,
			    inclusion_effect = EXCLUDED.inclusion_effect,
			    link_type = EXCLUDED.link_type,
			    publish_rate = EXCLUDED.publish_rate,
			    delivery_speed = EXCLUDED.delivery_speed,
			    supplier_updated_at = EXCLUDED.supplier_updated_at,
			    last_synced_at = NOW(),
			    raw_json = EXCLUDED.raw_json,
			    updated_at = NOW(),
			    deleted_at = NULL
			RETURNING id
		`, resource.Supplier, resource.SupplierResourceID, resource.ModelID, resource.Name, resource.Status,
			resource.CostPriceCents, costPrices, nullableTrimmedString(resource.SalePriceLabel),
			nullableTrimmedString(resource.ResourceURL), resource.BaiduWeight, nullableTrimmedString(resource.ResourceRemark),
			nullableTrimmedString(resource.ChannelType), nullableTrimmedString(resource.Region),
			nullableTrimmedString(resource.InclusionEffect), nullableTrimmedString(resource.LinkType),
			nullableTrimmedString(resource.PublishRate), nullableTrimmedString(resource.DeliverySpeed),
			resource.SupplierUpdatedAt, raw).Scan(&resourceID); err != nil {
			return stats, err
		}
		removed, err := s.deletePriceOverridesBelowCost(ctx, tx, resourceID)
		if err != nil {
			return stats, err
		}
		stats.RemovedPriceOverride += removed
		stats.Synced++
	}
	if err := tx.Commit(ctx); err != nil {
		return stats, err
	}
	return stats, nil
}

func (s *MediaSupplyService) deletePriceOverridesBelowCost(ctx context.Context, q interface {
	Exec(context.Context, string, ...any) (pgconn.CommandTag, error)
}, resourceID int64) (int, error) {
	if s == nil || q == nil || resourceID <= 0 {
		return 0, nil
	}
	tag, err := q.Exec(ctx, `
		DELETE FROM supplier_media_price_overrides o
		USING supplier_media_resources r
		WHERE o.resource_id = r.id
		  AND r.id = $1
		  AND r.supplier = $2
		  AND r.deleted_at IS NULL
		  AND o.enabled = TRUE
		  AND o.sell_price_cents < COALESCE(
		        CASE
		          WHEN o.price_type = 'price' THEN COALESCE(NULLIF(r.cost_prices_json->>'price', '')::bigint, NULLIF(r.cost_prices_json->>'sale_price', '')::bigint)
		          ELSE NULLIF(r.cost_prices_json->>o.price_type, '')::bigint
		        END,
		        r.cost_price_cents
		      )
	`, resourceID, mediaSupplySupplierMeijiequan)
	return int(tag.RowsAffected()), err
}

func (s *MediaSupplyService) RunMediaResourceSyncOnce(ctx context.Context, modelID int) (map[string]any, error) {
	if s == nil || s.pool == nil || s.client == nil {
		return nil, response.ErrServiceUnavailable(50360, "media_supply_store_unavailable", "媒体投稿服务暂不可用")
	}
	cfg := s.mediaSupplyConfig()
	if !cfg.Enabled {
		return map[string]any{"synced": 0, "model_id": modelID, "disabled": true}, nil
	}
	if modelID <= 0 {
		modelID = 1
	}
	if status, statusErr := s.client.SessionStatus(ctx); statusErr != nil || status == nil || !status.Available {
		if loginStatus, loginErr := s.client.LoginWithConfiguredAccount(ctx); loginErr != nil {
			return nil, mediaSupplyClientError(loginErr)
		} else if loginStatus == nil || !loginStatus.Available {
			return nil, mediaSupplyClientError(errMeijiequanSessionMissing)
		}
	}
	stats, err := s.syncMediaResourceModel(ctx, modelID, cfg.Meijiequan.SyncPageSize, cfg.Meijiequan.MaxSyncPages, cfg.Meijiequan.SyncPageDelay)
	if err != nil {
		return nil, mediaSupplyClientError(err)
	}
	return map[string]any{
		"model_id":                modelID,
		"synced":                  stats.Synced,
		"removed_price_overrides": stats.RemovedPriceOverride,
	}, nil
}

func (s *MediaSupplyService) syncMediaResourceModel(ctx context.Context, modelID, pageSize, maxPages int, pageDelay time.Duration) (mediaResourceSyncStats, error) {
	var total mediaResourceSyncStats
	for page := 1; page <= maxPages; page++ {
		if page > 1 && pageDelay > 0 {
			select {
			case <-ctx.Done():
				return total, ctx.Err()
			case <-time.After(pageDelay):
			}
		}
		mediaPage, err := s.client.ListMedia(ctx, modelID, page, pageSize)
		if err != nil {
			return total, err
		}
		stats, err := s.upsertSyncedResourcesWithStats(ctx, mediaPage.Items)
		if err != nil {
			return total, err
		}
		total.Synced += stats.Synced
		total.RemovedPriceOverride += stats.RemovedPriceOverride
		if len(mediaPage.Items) == 0 {
			break
		}
		if mediaPage.AllPage > 0 && page >= mediaPage.AllPage {
			break
		}
	}
	return total, nil
}

func (s *MediaSupplyService) resourceCostForPriceType(ctx context.Context, resourceID int64, priceType string) (int64, error) {
	var costPrice int64
	var costPricesRaw []byte
	if err := s.pool.QueryRow(ctx, `
		SELECT cost_price_cents, cost_prices_json
		FROM supplier_media_resources
		WHERE id = $1 AND supplier = $2 AND deleted_at IS NULL
	`, resourceID, mediaSupplySupplierMeijiequan).Scan(&costPrice, &costPricesRaw); err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return 0, response.ErrNotFound(40460, "media_supply_resource_not_found", "媒体资源不存在或已下架")
		}
		return 0, response.ErrInternal(50071, "media_supply_resource_lookup_failed", "媒体资源读取失败")
	}
	var costPrices map[string]int64
	_ = json.Unmarshal(costPricesRaw, &costPrices)
	if priceTypeCost := costPrices[priceType]; priceTypeCost > 0 {
		return priceTypeCost, nil
	}
	return costPrice, nil
}

func (s *MediaSupplyService) loadArticleContent(ctx context.Context, tenantID, brandID, articleID int64) (string, string, error) {
	var title sql.NullString
	var html sql.NullString
	var markdown sql.NullString
	if err := s.pool.QueryRow(ctx, `
		SELECT av.title, av.html_content, av.markdown_content
		FROM articles a
		JOIN article_versions av ON av.id = a.current_version_id
		WHERE a.id = $1 AND a.tenant_id = $2 AND a.brand_id = $3 AND a.deleted_at IS NULL
	`, articleID, tenantID, brandID).Scan(&title, &html, &markdown); err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return "", "", response.ErrNotFound(40461, "article_not_found", "文章不存在或已删除")
		}
		return "", "", response.ErrInternal(50072, "article_lookup_failed", "文章读取失败")
	}
	content := strings.TrimSpace(markdown.String)
	if content == "" {
		content = strings.TrimSpace(html.String)
	}
	return strings.TrimSpace(title.String), content, nil
}

func (s *MediaSupplyService) loadResourceForOrder(ctx context.Context, q interface {
	QueryRow(context.Context, string, ...any) pgx.Row
}, resourceID int64, modelID int, priceType string) (SupplierMediaResource, int64, bool, error) {
	var item SupplierMediaResource
	var costPricesRaw []byte
	var overrideCents int64
	var overrideEnabled bool
	if err := q.QueryRow(ctx, `
		SELECT r.id, r.supplier, r.supplier_resource_id, r.model_id, r.name, r.status,
		       r.cost_price_cents, r.cost_prices_json, COALESCE(o.sell_price_cents, 0), COALESCE(o.enabled, false)
		FROM supplier_media_resources r
		LEFT JOIN supplier_media_price_overrides o ON o.resource_id = r.id AND o.price_type = $4
		WHERE r.id = $1 AND r.supplier = $2 AND r.model_id = $3 AND r.deleted_at IS NULL AND r.customer_visible = TRUE
		FOR UPDATE OF r
	`, resourceID, mediaSupplySupplierMeijiequan, modelID, priceType).Scan(
		&item.ID, &item.Supplier, &item.SupplierResourceID, &item.ModelID, &item.Name, &item.Status,
		&item.CostPriceCents, &costPricesRaw, &overrideCents, &overrideEnabled,
	); err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return item, 0, false, response.ErrNotFound(40460, "media_supply_resource_not_found", "媒体资源不存在或已下架")
		}
		return item, 0, false, response.ErrInternal(50071, "media_supply_resource_lookup_failed", "媒体资源读取失败")
	}
	_ = json.Unmarshal(costPricesRaw, &item.CostPrices)
	if item.CostPrices == nil {
		item.CostPrices = map[string]int64{}
	}
	return item, overrideCents, overrideEnabled, nil
}

func (s *MediaSupplyService) listOrderItems(ctx context.Context, orderID int64) ([]MediaSupplyOrderItem, error) {
	rows, err := s.pool.Query(ctx, `
		SELECT id, order_id, resource_id, supplier_resource_id, price_type, resource_name_snapshot,
		       locked_cost_price_cents, locked_sell_price_cents, status, external_article_url
		FROM media_supply_order_items
		WHERE order_id = $1
		ORDER BY id ASC
	`, orderID)
	if err != nil {
		return nil, response.ErrInternal(50073, "media_supply_order_item_query_failed", "媒体投稿明细读取失败")
	}
	defer rows.Close()
	items := make([]MediaSupplyOrderItem, 0)
	for rows.Next() {
		var item MediaSupplyOrderItem
		if err := rows.Scan(
			&item.ID,
			&item.OrderID,
			&item.ResourceID,
			&item.SupplierResourceID,
			&item.PriceType,
			&item.ResourceNameSnapshot,
			&item.LockedCostPriceCents,
			&item.LockedSellPriceCents,
			&item.Status,
			&item.ExternalArticleURL,
		); err != nil {
			return nil, response.ErrInternal(50074, "media_supply_order_item_scan_failed", "媒体投稿明细解析失败")
		}
		if item.ExternalArticleURL != nil {
			if cleaned := publicMediaSupplyArticleURL(*item.ExternalArticleURL); cleaned != "" {
				item.ExternalArticleURL = &cleaned
			} else {
				item.ExternalArticleURL = nil
			}
		}
		items = append(items, item)
	}
	return items, nil
}

func (s *MediaSupplyService) attachOrderItems(ctx context.Context, orders []MediaSupplyOrderDetail) error {
	if len(orders) == 0 {
		return nil
	}
	orderIDs := make([]int64, 0, len(orders))
	index := make(map[int64]int, len(orders))
	for idx := range orders {
		orderIDs = append(orderIDs, orders[idx].ID)
		index[orders[idx].ID] = idx
	}
	rows, err := s.pool.Query(ctx, `
		SELECT id, order_id, resource_id, supplier_resource_id, price_type, resource_name_snapshot,
		       locked_cost_price_cents, locked_sell_price_cents, status, external_article_url
		FROM media_supply_order_items
		WHERE order_id = ANY($1::bigint[])
		ORDER BY order_id ASC, id ASC
	`, orderIDs)
	if err != nil {
		return response.ErrInternal(50073, "media_supply_order_item_query_failed", "媒体投稿明细读取失败")
	}
	defer rows.Close()
	for rows.Next() {
		var item MediaSupplyOrderItem
		if err := rows.Scan(
			&item.ID,
			&item.OrderID,
			&item.ResourceID,
			&item.SupplierResourceID,
			&item.PriceType,
			&item.ResourceNameSnapshot,
			&item.LockedCostPriceCents,
			&item.LockedSellPriceCents,
			&item.Status,
			&item.ExternalArticleURL,
		); err != nil {
			return response.ErrInternal(50074, "media_supply_order_item_scan_failed", "媒体投稿明细解析失败")
		}
		if item.ExternalArticleURL != nil {
			if cleaned := publicMediaSupplyArticleURL(*item.ExternalArticleURL); cleaned != "" {
				item.ExternalArticleURL = &cleaned
			} else {
				item.ExternalArticleURL = nil
			}
		}
		if idx, ok := index[item.OrderID]; ok {
			orders[idx].Items = append(orders[idx].Items, item)
		}
	}
	if err := rows.Err(); err != nil {
		return response.ErrInternal(50074, "media_supply_order_item_scan_failed", "媒体投稿明细解析失败")
	}
	return nil
}

func isKnownMeijiequanModel(modelID int) bool {
	for _, known := range meijiequanModelIDs {
		if modelID == known {
			return true
		}
	}
	return false
}

func isTenantAdmin(actor auth.Actor) bool {
	return strings.EqualFold(strings.TrimSpace(actor.Role), "tenant_admin")
}

func nullableInt(value int) any {
	if value <= 0 {
		return nil
	}
	return value
}

func nullableInt64Ptr(value *int64) any {
	if value == nil || *value <= 0 {
		return nil
	}
	return *value
}

func nullableTrimmedString(value string) any {
	value = strings.TrimSpace(value)
	if value == "" {
		return nil
	}
	return value
}

func costForResourcePriceType(resource SupplierMediaResource, priceType string) int64 {
	if resource.CostPrices != nil {
		if value := resource.CostPrices[priceType]; value > 0 {
			return value
		}
		if priceType == "price" {
			if value := resource.CostPrices["sale_price"]; value > 0 {
				return value
			}
		}
	}
	return resource.CostPriceCents
}

func mediaSupplyOverrideBelowCost(resource SupplierMediaResource, priceType string, overrideCents int64, overrideEnabled bool) bool {
	if !overrideEnabled {
		return false
	}
	cost := costForResourcePriceType(resource, normalizeMediaSupplyPriceType(priceType))
	return cost > 0 && overrideCents < cost
}

func mediaSupplyClientError(err error) error {
	switch {
	case errors.Is(err, errMeijiequanCredentialsMissing):
		return response.ErrConflict(40964, "media_supply_credentials_required", "媒体供应商账号未配置，请联系管理员处理")
	case errors.Is(err, errMeijiequanSessionMissing), errors.Is(err, errMeijiequanSessionExpired), errors.Is(err, errMeijiequanAuthRequired):
		return response.ErrConflict(40962, "media_supply_session_required", "媒体供应商登录状态已失效，请联系管理员处理")
	case errors.Is(err, errMeijiequanChallengeRequired):
		return response.ErrConflict(40963, "media_supply_challenge_required", "媒体供应商登录验证失败，请联系管理员处理")
	default:
		return response.ErrInternal(50075, "media_supply_request_failed", mediaSupplyPublicErrorMessage(err))
	}
}

func mediaSupplySellPriceSQL(cfg config.MediaSupplyConfig) string {
	floorSQL := "r.cost_price_cents"
	if cfg.DefaultMarkupPercent > 0 {
		multiplier := 1 + cfg.DefaultMarkupPercent/100
		floorSQL = fmt.Sprintf("CEIL(r.cost_price_cents * %.8f)::BIGINT", multiplier)
	}
	if cfg.MinimumMarkupCents > 0 {
		floorSQL = fmt.Sprintf("GREATEST(%s, r.cost_price_cents + %d)", floorSQL, cfg.MinimumMarkupCents)
	}
	rawPriceSQL := fmt.Sprintf("CASE WHEN COALESCE(o.enabled, false) AND COALESCE(o.sell_price_cents, 0) >= r.cost_price_cents THEN o.sell_price_cents ELSE (%s) END", floorSQL)
	return fmt.Sprintf("CEIL((%s) / 100.0)::BIGINT * 100", rawPriceSQL)
}

func mediaSupplyResourceOrderSQL(sort string, sellPriceSQL string) string {
	switch strings.ToLower(strings.TrimSpace(sort)) {
	case "price":
		return fmt.Sprintf("(%s) ASC, r.id DESC", sellPriceSQL)
	case "weight":
		return "COALESCE(r.baidu_weight, 0) DESC, r.id DESC"
	default:
		return "r.updated_at DESC, r.id DESC"
	}
}

type mediaSupplyOrderScanner interface {
	Scan(...any) error
}

func scanMediaSupplyOrder(row mediaSupplyOrderScanner) (MediaSupplyOrderDetail, error) {
	var item MediaSupplyOrderDetail
	if err := row.Scan(
		&item.ID,
		&item.TenantID,
		&item.WorkspaceID,
		&item.BrandID,
		&item.UserID,
		&item.ArticleID,
		&item.Supplier,
		&item.ModelID,
		&item.Status,
		&item.Title,
		&item.Remark,
		&item.OrderBrand,
		&item.ExternalOrderID,
		&item.ExternalOrderCode,
		&item.SupplierStatus,
		&item.CostTotalCents,
		&item.SellTotalCents,
		&item.WalletDebitCents,
		&item.WalletDebitedAt,
		&item.WalletRefundedAt,
		&item.ErrorMessage,
		&item.AttemptCount,
		&item.QueuedAt,
		&item.SubmittedAt,
		&item.CompletedAt,
		&item.CreatedAt,
		&item.UpdatedAt,
	); err != nil {
		if errors.Is(err, pgx.ErrNoRows) {
			return item, response.ErrNotFound(40462, "media_supply_order_not_found", "媒体投稿订单不存在")
		}
		return item, response.ErrInternal(50076, "media_supply_order_scan_failed", "媒体投稿订单解析失败")
	}
	item.Supplier = publicMediaSupplySupplierCode(item.Supplier)
	if item.ErrorMessage != nil {
		message := mediaSupplyPublicGenericErrorMessage(*item.ErrorMessage)
		item.ErrorMessage = &message
	}
	item.ExternalOrderID = nil
	if item.ExternalOrderCode != nil {
		code := strings.ToUpper(strings.TrimSpace(*item.ExternalOrderCode))
		if !isLikelyMeijiequanOrderCode(code) {
			item.ExternalOrderCode = nil
		} else {
			item.ExternalOrderCode = &code
		}
	}
	return item, nil
}