package repository

import (
	"context"
	"time"

	"github.com/geo-platform/tenant-api/internal/tenant/repository/generated"
)

type WorkspaceRecentArticle struct {
	ID             int64
	GenerateStatus string
	PublishStatus  string
	SourceType     string
	GenerationMode *string
	CreatedAt      time.Time
	Title          *string
	WordCount      int
	SourceLabel    *string
	TemplateName   *string
}

type WorkspacePlan struct {
	PlanCode        string
	PlanName        string
	QuotaPolicyJSON []byte
	StartAt         time.Time
	EndAt           time.Time
}

type WorkspaceKolCard struct {
	SubscriptionPromptID int64
	GrantedAt            time.Time
	UpdatedAt            time.Time
	PromptName           string
	PlatformHint         *string
	PackageName          string
	PackageCover         *string
	KolDisplayName       string
}

type WorkspaceRepository interface {
	CountArticlesByTenant(ctx context.Context, tenantID int64) (int64, error)
	CountPublishedArticlesByTenant(ctx context.Context, tenantID int64) (int64, error)
	CountBrandsByTenant(ctx context.Context, tenantID int64) (int64, error)
	GetRecentArticles(ctx context.Context, tenantID int64) ([]WorkspaceRecentArticle, error)
	GetQuotaSummary(ctx context.Context, tenantID int64) (int, error)
	GetActivePlanForTenant(ctx context.Context, tenantID int64) (*WorkspacePlan, error)
	ListKolCards(ctx context.Context, tenantID int64) ([]WorkspaceKolCard, error)
}

type workspaceRepository struct {
	q generated.Querier
}

func NewWorkspaceRepository(db generated.DBTX) WorkspaceRepository {
	return &workspaceRepository{q: newQuerier(db)}
}

func (r *workspaceRepository) CountArticlesByTenant(ctx context.Context, tenantID int64) (int64, error) {
	return r.q.CountArticlesByTenant(ctx, tenantID)
}

func (r *workspaceRepository) CountPublishedArticlesByTenant(ctx context.Context, tenantID int64) (int64, error) {
	return r.q.CountPublishedArticlesByTenant(ctx, tenantID)
}

func (r *workspaceRepository) CountBrandsByTenant(ctx context.Context, tenantID int64) (int64, error) {
	return r.q.CountBrandsByTenant(ctx, tenantID)
}

func (r *workspaceRepository) GetRecentArticles(ctx context.Context, tenantID int64) ([]WorkspaceRecentArticle, error) {
	rows, err := r.q.GetRecentArticles(ctx, tenantID)
	if err != nil {
		return nil, err
	}

	articles := make([]WorkspaceRecentArticle, 0, len(rows))
	for _, row := range rows {
		articles = append(articles, WorkspaceRecentArticle{
			ID:             row.ID,
			GenerateStatus: row.GenerateStatus,
			PublishStatus:  row.PublishStatus,
			SourceType:     row.SourceType,
			GenerationMode: nullableAnyText(row.GenerationMode),
			CreatedAt:      timeFromTimestamp(row.CreatedAt),
			Title:          nullableText(row.Title),
			WordCount:      intFromInt4(row.WordCount),
			SourceLabel:    nullableText(row.SourceLabel),
			TemplateName:   nullableText(row.TemplateName),
		})
	}

	return articles, nil
}

func (r *workspaceRepository) GetQuotaSummary(ctx context.Context, tenantID int64) (int, error) {
	balance, err := r.q.GetQuotaSummary(ctx, tenantID)
	if err != nil {
		return 0, err
	}
	return int(balance), nil
}

func (r *workspaceRepository) GetActivePlanForTenant(ctx context.Context, tenantID int64) (*WorkspacePlan, error) {
	row, err := r.q.GetActivePlanForTenant(ctx, tenantID)
	if err != nil {
		return nil, err
	}

	return &WorkspacePlan{
		PlanCode:        row.PlanCode,
		PlanName:        row.PlanName,
		QuotaPolicyJSON: row.QuotaPolicyJson,
		StartAt:         timeFromTimestamp(row.StartAt),
		EndAt:           timeFromTimestamp(row.EndAt),
	}, nil
}

func (r *workspaceRepository) ListKolCards(ctx context.Context, tenantID int64) ([]WorkspaceKolCard, error) {
	rows, err := r.q.ListKolCardsForTenant(ctx, tenantID)
	if err != nil {
		return nil, err
	}

	cards := make([]WorkspaceKolCard, 0, len(rows))
	for _, row := range rows {
		cards = append(cards, WorkspaceKolCard{
			SubscriptionPromptID: row.SubscriptionPromptID,
			GrantedAt:            timeFromTimestamp(row.GrantedAt),
			UpdatedAt:            timeFromTimestamp(row.UpdatedAt),
			PromptName:           row.PromptName,
			PlatformHint:         nullableText(row.PlatformHint),
			PackageName:          row.PackageName,
			PackageCover:         nullableText(row.PackageCover),
			KolDisplayName:       row.KolDisplayName,
		})
	}

	return cards, nil
}