package handlers

import (
	"net/http"
	"strconv"

	"veza-backend-api/internal/core/marketplace"
	apperrors "veza-backend-api/internal/errors"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

// PayoutHandler handles seller balance and payout endpoints (v0.12.0 F254)
type PayoutHandler struct {
	marketService *marketplace.Service
	logger        *zap.Logger
}

// NewPayoutHandler creates a new PayoutHandler
func NewPayoutHandler(service *marketplace.Service, logger *zap.Logger) *PayoutHandler {
	return &PayoutHandler{
		marketService: service,
		logger:        logger,
	}
}

// GetSellerBalance returns the seller's marketplace balance
func (h *PayoutHandler) GetSellerBalance(c *gin.Context) {
	userID, ok := GetUserIDUUID(c)
	if !ok {
		return
	}

	balance, err := h.marketService.GetSellerBalance(c.Request.Context(), userID)
	if err != nil {
		RespondWithAppError(c, apperrors.NewInternalErrorWrap("Failed to get balance", err))
		return
	}

	RespondSuccess(c, http.StatusOK, gin.H{
		"available_cents":     balance.AvailableCents,
		"pending_cents":       balance.PendingCents,
		"total_earned_cents":  balance.TotalEarnedCents,
		"total_paid_out_cents": balance.TotalPaidOutCents,
		"currency":            balance.Currency,
	})
}

// GetPayoutHistory returns the seller's payout history
func (h *PayoutHandler) GetPayoutHistory(c *gin.Context) {
	userID, ok := GetUserIDUUID(c)
	if !ok {
		return
	}

	limit, _ := strconv.Atoi(c.DefaultQuery("limit", "20"))
	limit = clampLimit(limit) // SECURITY(MEDIUM-004)
	offset, _ := strconv.Atoi(c.DefaultQuery("offset", "0"))

	payouts, err := h.marketService.GetSellerPayouts(c.Request.Context(), userID, limit, offset)
	if err != nil {
		RespondWithAppError(c, apperrors.NewInternalErrorWrap("Failed to get payouts", err))
		return
	}

	RespondSuccess(c, http.StatusOK, gin.H{"payouts": payouts})
}

// RequestPayout creates a manual payout request
func (h *PayoutHandler) RequestPayout(c *gin.Context) {
	userID, ok := GetUserIDUUID(c)
	if !ok {
		return
	}

	payout, err := h.marketService.RequestPayout(c.Request.Context(), userID)
	if err != nil {
		RespondWithAppError(c, apperrors.NewValidationError(err.Error()))
		return
	}

	RespondSuccess(c, http.StatusCreated, payout)
}