package transport

import (
	"strconv"

	"github.com/gin-gonic/gin"

	"github.com/geo-platform/tenant-api/internal/ops/app"
	"github.com/geo-platform/tenant-api/internal/shared/response"
)

type setMediaSupplyPriceRequest struct {
	PriceType      string `json:"price_type"`
	SellPriceCents int64  `json:"sell_price_cents"`
	Enabled        *bool  `json:"enabled,omitempty"`
}

type setMediaSupplyVisibilityRequest struct {
	CustomerVisible bool `json:"customer_visible"`
}

type adjustMediaSupplyWalletRequest struct {
	TenantID   int64  `json:"tenant_id" binding:"required"`
	UserID     int64  `json:"user_id" binding:"required"`
	DeltaCents int64  `json:"delta_cents" binding:"required"`
	Note       string `json:"note"`
}

func listMediaSupplyResourcesHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		modelID, err := parseOptionalOpsIntQuery(c, "model_id")
		if err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_model_id", "媒体资源类型参数必须是数字"))
			return
		}
		minPriceCents, err := parseOptionalOpsInt64Query(c, "min_price_cents")
		if err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_min_price_cents", "最低价格参数必须是数字"))
			return
		}
		maxPriceCents, err := parseOptionalOpsInt64Query(c, "max_price_cents")
		if err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_max_price_cents", "最高价格参数必须是数字"))
			return
		}
		page, _ := parseOptionalOpsIntQuery(c, "page")
		size, _ := parseOptionalOpsIntQuery(c, "page_size")
		result, err := svc.ListResources(c.Request.Context(), app.ListMediaSupplyResourcesInput{
			ModelID:         modelID,
			Keyword:         c.Query("keyword"),
			RemarkKeyword:   c.Query("remark_keyword"),
			ChannelType:     c.Query("channel_type"),
			Region:          c.Query("region"),
			InclusionEffect: c.Query("inclusion_effect"),
			LinkType:        c.Query("link_type"),
			MinPriceCents:   minPriceCents,
			MaxPriceCents:   maxPriceCents,
			Visibility:      c.Query("visibility"),
			Page:            page,
			Size:            size,
		})
		if err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, result)
	}
}

func setMediaSupplyResourcePriceHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		id, err := parseIDParam(c)
		if err != nil {
			response.Error(c, err)
			return
		}
		var body setMediaSupplyPriceRequest
		if err := c.ShouldBindJSON(&body); err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_payload", "价格参数不正确"))
			return
		}
		enabled := true
		if body.Enabled != nil {
			enabled = *body.Enabled
		}
		if err := svc.SetResourcePrice(c.Request.Context(), actorFromGin(c), id, app.SetMediaSupplyPriceInput{
			PriceType:      body.PriceType,
			SellPriceCents: body.SellPriceCents,
			Enabled:        enabled,
		}); err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, gin.H{"updated": true})
	}
}

func setMediaSupplyResourceVisibilityHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		id, err := parseIDParam(c)
		if err != nil {
			response.Error(c, err)
			return
		}
		var body setMediaSupplyVisibilityRequest
		if err := c.ShouldBindJSON(&body); err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_payload", "展示状态参数不正确"))
			return
		}
		if err := svc.SetResourceVisibility(c.Request.Context(), actorFromGin(c), id, app.SetMediaSupplyVisibilityInput{
			CustomerVisible: body.CustomerVisible,
		}); err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, gin.H{"updated": true})
	}
}

func queueMediaSupplySyncHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		var body struct {
			ModelID int `json:"model_id"`
		}
		if c.Request.Body != nil {
			_ = c.ShouldBindJSON(&body)
		}
		jobID, err := svc.QueueSync(c.Request.Context(), actorFromGin(c), body.ModelID)
		if err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, gin.H{"job_id": jobID})
	}
}

func listMediaSupplyWalletsHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		tenantID, err := parseOptionalOpsInt64Query(c, "tenant_id")
		if err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_tenant_id", "租户参数必须是数字"))
			return
		}
		page, _ := parseOptionalOpsIntQuery(c, "page")
		size, _ := parseOptionalOpsIntQuery(c, "page_size")
		result, err := svc.ListWallets(c.Request.Context(), app.ListMediaSupplyWalletsInput{
			Keyword:  c.Query("keyword"),
			TenantID: tenantID,
			Page:     page,
			Size:     size,
		})
		if err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, result)
	}
}

func adjustMediaSupplyWalletHandler(svc *app.MediaSupplyService) gin.HandlerFunc {
	return func(c *gin.Context) {
		var body adjustMediaSupplyWalletRequest
		if err := c.ShouldBindJSON(&body); err != nil {
			response.Error(c, response.ErrBadRequest(40001, "invalid_payload", "余额调整参数不正确"))
			return
		}
		actor := actorFromGin(c)
		operatorTag := "ops manual adjustment"
		if actor != nil && actor.DisplayName != "" {
			operatorTag = "ops " + actor.DisplayName
		}
		result, err := svc.AdjustWallet(c.Request.Context(), actor, app.AdjustMediaSupplyWalletInput{
			TenantID:    body.TenantID,
			UserID:      body.UserID,
			DeltaCents:  body.DeltaCents,
			Note:        body.Note,
			OperatorTag: operatorTag,
		})
		if err != nil {
			response.Error(c, err)
			return
		}
		response.Success(c, result)
	}
}

func parseOptionalOpsIntQuery(c *gin.Context, key string) (int, error) {
	raw := c.Query(key)
	if raw == "" {
		return 0, nil
	}
	return strconv.Atoi(raw)
}

func parseOptionalOpsInt64Query(c *gin.Context, key string) (int64, error) {
	raw := c.Query(key)
	if raw == "" {
		return 0, nil
	}
	return strconv.ParseInt(raw, 10, 64)
}