package controllers

import (
	"abdanhafidz.com/go-boilerplate/models/dto"
	"abdanhafidz.com/go-boilerplate/services"
	"github.com/gin-gonic/gin"
)

type ClassBookingController interface {
	GetBookingOptions(ctx *gin.Context)
	BookClass(ctx *gin.Context)
	GetClassBookingDetail(ctx *gin.Context)
	GetClassBookingsByFilter(ctx *gin.Context)
	CreateClassBooking(ctx *gin.Context)
	UpdateClassBooking(ctx *gin.Context)
	DeleteClassBooking(ctx *gin.Context)
	ReduceCapacity(ctx *gin.Context)
}

type classBookingController struct {
	classService services.ClassService
}

func NewClassBookingController(classService services.ClassService) ClassBookingController {
	return &classBookingController{
		classService: classService,
	}
}

// GetBookingOptions godoc
// @Summary      Get Class Booking Options
// @Description  Get available slots and class types for a specific class to be booked.
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        classId  path      string  true  "Class ID"
// @Success      200      {object}  dto.ClassBookingOptionsResponse
// @Failure      400      {object}  dto.ErrorResponse
// @Failure      404      {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/{classId}/options [get]
func (c *classBookingController) GetBookingOptions(ctx *gin.Context) {
	classId := ctx.Param("classId")
	res, err := c.classService.GetClassBookingOptions(ctx.Request.Context(), classId)
	ResponseJSON(ctx, "", res, err)
}

// BookClass godoc
// @Summary      Book a Class
// @Description  Book a specific slot and type of a class. Returns Xendit checkout URL if payment is required.
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        request  body      dto.BookClassRequest  true  "Class Booking Data"
// @Success      201      {object}  dto.BookClassResponse
// @Failure      400      {object}  dto.ErrorResponse
// @Failure      401      {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes [post]
func (c *classBookingController) BookClass(ctx *gin.Context) {
	req, err := RequestJSON[dto.BookClassRequest](ctx)
	if err != nil {
		return
	}
	userId := ParseUserId(ctx)
	if userId == "" {
		return
	}

	res, err := c.classService.BookClass(ctx.Request.Context(), userId, req)
	if err != nil {
		ResponseJSON(ctx, req, res, err)
		return
	}

	ctx.JSON(201, gin.H{
		"success": true,
		"message": "Class booked successfully",
		"data":    res,
	})
}

// GetClassBookingDetail godoc
// @Summary      Get Class Booking Detail
// @Description  Get class booking details by booking ID
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        booking_id  query     string  true  "Booking ID"
// @Success      200         {object}  dto.CreateClassBookingResponse
// @Failure      400         {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes [get]
func (c *classBookingController) GetClassBookingDetail(ctx *gin.Context) {
	bookingID := ctx.Query("booking_id")
	if bookingID == "" {
		ctx.JSON(400, gin.H{"error": "booking_id is required"})
		return
	}

	res, err := c.classService.GetClassBookingDetail(ctx.Request.Context(), bookingID)
	ResponseJSON(ctx, "", res, err)
}

// GetClassBookingsByFilter godoc
// @Summary      Get Class Bookings By Filter
// @Description  Get a list of class bookings filtered by user ID
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        user_id  query     string  true  "User ID"
// @Success      200      {array}   dto.CreateClassBookingResponse
// @Failure      400      {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/filters [get]
func (c *classBookingController) GetClassBookingsByFilter(ctx *gin.Context) {
	userID := ctx.Query("user_id")
	if userID == "" {
		ctx.JSON(400, gin.H{"error": "user_id is required"})
		return
	}

	res, err := c.classService.GetClassBookingsByFilter(ctx.Request.Context(), userID)
	ResponseJSON(ctx, "", res, err)
}

// CreateClassBooking godoc
// @Summary      Create a new Class Booking (Direct)
// @Description  Create a class booking with a specific payload (direct booking)
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        request  body      dto.CreateClassBookingRequest  true  "Class Booking Data"
// @Success      201      {object}  dto.CreateClassBookingResponse
// @Failure      400      {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/create [post]
func (c *classBookingController) CreateClassBooking(ctx *gin.Context) {
	req, err := RequestJSON[dto.CreateClassBookingRequest](ctx)
	if err != nil {
		return
	}

	userID := ParseUserId(ctx)
	if userID == "" {
		return
	}

	res, err := c.classService.CreateClassBooking(ctx.Request.Context(), userID, req)
	if err != nil {
		ResponseJSON(ctx, req, res, err)
		return
	}

	ctx.JSON(201, res)
}

// UpdateClassBooking godoc
// @Summary      Partially Update a Class Booking
// @Description  Partially update a class booking. JSON fields (payment_details, available_slots, available_types) are deep-merged — only provided keys are overwritten.
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        booking_id  query     string                       true   "Booking ID"
// @Param        request     body      dto.UpdateClassBookingRequest  true   "Fields to update"
// @Success      200         {object}  dto.UpdateClassBookingResponse
// @Failure      400         {object}  dto.ErrorResponse
// @Failure      404         {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/update [put]
func (c *classBookingController) UpdateClassBooking(ctx *gin.Context) {
	bookingID := ctx.Query("booking_id")
	if bookingID == "" {
		ctx.JSON(400, gin.H{"error": "booking_id is required"})
		return
	}

	req, err := RequestJSON[dto.UpdateClassBookingRequest](ctx)
	if err != nil {
		return
	}

	res, err := c.classService.UpdateClassBooking(ctx.Request.Context(), bookingID, req)
	if err != nil {
		ResponseJSON(ctx, req, res, err)
		return
	}

	ctx.JSON(200, res)
}

// DeleteClassBooking godoc
// @Summary      Delete a Class Booking
// @Description  Delete a class booking record by booking ID.
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        booking_id  query     string  true  "Booking ID"
// @Success      200         {object}  map[string]interface{}
// @Failure      400         {object}  dto.ErrorResponse
// @Failure      404         {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/delete [post]
func (c *classBookingController) DeleteClassBooking(ctx *gin.Context) {
	bookingID := ctx.Query("booking_id")
	if bookingID == "" {
		ctx.JSON(400, gin.H{"error": "booking_id is required"})
		return
	}

	err := c.classService.DeleteClassBooking(ctx.Request.Context(), bookingID)
	if err != nil {
		ctx.JSON(400, gin.H{"success": false, "message": err.Error()})
		return
	}


	ctx.JSON(200, gin.H{"success": true, "message": "Booking deleted successfully"})
}

// ReduceCapacity godoc
// @Summary      Reduce Capacity
// @Description  Reduce available capacity of a specific ticket type in a slot for a class
// @Tags         Class Booking
// @Accept       json
// @Produce      json
// @Param        request  body      dto.ReduceCapacityRequest  true  "Reduce Capacity Data"
// @Success      200      {object}  dto.ClassBookingOptionsResponse
// @Failure      400      {object}  dto.ErrorResponse
// @Failure      500      {object}  dto.ErrorResponse
// @Security     BearerAuth
// @Router       /api/v1/bookings/classes/reduce-capacity [post]
func (c *classBookingController) ReduceCapacity(ctx *gin.Context) {
	req, err := RequestJSON[dto.ReduceCapacityRequest](ctx)
	if err != nil {
		return
	}

	res, err := c.classService.ReduceCapacity(ctx.Request.Context(), req)
	if err != nil {
		ctx.JSON(500, gin.H{"success": false, "message": err.Error()})
		return
	}

	ctx.JSON(200, res)
}