package handlers

import (
	"log/slog"
	"strconv"

	"github.com/SamuelTariku/FortuneBet-Backend/internal/domain"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/services/ticket"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/web_server/response"
	customvalidator "github.com/SamuelTariku/FortuneBet-Backend/internal/web_server/validator"
	"github.com/gofiber/fiber/v2"
)

type TicketOutcome struct {
	EventID int64 `json:"event_id" example:"1"`
	OddID   int64 `json:"odd_id" example:"1"`
}

type CreateTicketReq struct {
	Outcomes  []TicketOutcome `json:"outcomes"`
	Amount    float32         `json:"amount" example:"100.0"`
	TotalOdds float32         `json:"total_odds" example:"4.22"`
}
type CreateTicketRes struct {
	FastCode      int64 `json:"fast_code" example:"1234"`
	CreatedNumber int64 `json:"created_number" example:"3"`
}

// CreateTicket godoc
// @Summary Create a temporary ticket
// @Description Creates a temporary ticket
// @Tags ticket
// @Accept json
// @Produce json
// @Param createTicket body CreateTicketReq true "Creates ticket"
// @Success 200 {object} CreateTicketRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /ticket [post]
func CreateTicket(logger *slog.Logger, ticketSvc *ticket.Service,
	validator *customvalidator.CustomValidator) fiber.Handler {
	return func(c *fiber.Ctx) error {
		var req CreateTicketReq
		if err := c.BodyParser(&req); err != nil {
			logger.Error("CreateTicketReq failed", "error", err)
			return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
				"error": "Invalid request",
			})
		}

		valErrs, ok := validator.Validate(c, req)
		if !ok {
			response.WriteJSON(c, fiber.StatusBadRequest, "Invalid request", valErrs, nil)
			return nil
		}

		// TODO Validate Outcomes Here and make sure they didn't expire

		ticket, err := ticketSvc.CreateTicket(c.Context(), domain.CreateTicket{
			Amount:    domain.Currency(req.Amount),
			TotalOdds: req.TotalOdds,
		})
		if err != nil {
			logger.Error("CreateTicketReq failed", "error", err)
			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
				"error": "Internal server error",
			})
		}

		var outcomes []domain.CreateTicketOutcome = make([]domain.CreateTicketOutcome, 0, len(req.Outcomes))

		for _, outcome := range req.Outcomes {
			outcomes = append(outcomes, domain.CreateTicketOutcome{
				TicketID: ticket.ID,
				EventID:  outcome.EventID,
				OddID:    outcome.OddID,
			})
		}
		rows, err := ticketSvc.CreateTicketOutcome(c.Context(), outcomes)

		if err != nil {
			logger.Error("CreateTicketReq failed to create outcomes", "error", err)
			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
				"error": "Internal server error",
			})
		}
		res := CreateTicketRes{
			FastCode:      ticket.ID,
			CreatedNumber: rows,
		}
		return response.WriteJSON(c, fiber.StatusOK, "Ticket Created", res, nil)
	}
}

type TicketRes struct {
	ID        int64                  `json:"id" example:"1"`
	Outcomes  []domain.TicketOutcome `json:"outcomes"`
	Amount    float32                `json:"amount" example:"100.0"`
	TotalOdds float32                `json:"total_odds" example:"4.22"`
}

// GetTicketByID godoc
// @Summary Get ticket by ID
// @Description Retrieve ticket details by ticket ID
// @Tags ticket
// @Accept json
// @Produce json
// @Param id path int true "Ticket ID"
// @Success 200 {object} TicketRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /ticket/{id} [get]
func GetTicketByID(logger *slog.Logger, ticketSvc *ticket.Service,
	validator *customvalidator.CustomValidator) fiber.Handler {
	return func(c *fiber.Ctx) error {
		ticketID := c.Params("id")

		id, err := strconv.ParseInt(ticketID, 10, 64)
		if err != nil {
			logger.Error("Invalid ticket ID", "ticketID", ticketID, "error", err)
			return response.WriteJSON(c, fiber.StatusBadRequest, "Invalid ticket ID", err, nil)
		}

		ticket, err := ticketSvc.GetTicketByID(c.Context(), id)

		if err != nil {
			logger.Error("Failed to get ticket by ID", "ticketID", id, "error", err)
			return response.WriteJSON(c, fiber.StatusInternalServerError, "Failed to retrieve ticket", err, nil)
		}

		res := TicketRes{
			ID:        ticket.ID,
			Outcomes:  ticket.Outcomes,
			Amount:    ticket.Amount.Float64(),
			TotalOdds: ticket.TotalOdds,
		}

		return response.WriteJSON(c, fiber.StatusOK, "Ticket retrieved successfully", res, nil)

	}
}

// GetAllTickets godoc
// @Summary Get all tickets
// @Description Retrieve all tickets
// @Tags ticket
// @Accept json
// @Produce json
// @Success 200 {array} TicketRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /ticket [get]
func GetAllTickets(logger *slog.Logger, ticketSvc *ticket.Service,
	validator *customvalidator.CustomValidator) fiber.Handler {
	return func(c *fiber.Ctx) error {
		tickets, err := ticketSvc.GetAllTickets(c.Context())

		if err != nil {
			logger.Error("Failed to get tickets", "error", err)
			return response.WriteJSON(c, fiber.StatusInternalServerError, "Failed to retrieve tickets", err, nil)
		}

		var res []TicketRes = make([]TicketRes, 0, len(tickets))

		for _, ticket := range tickets {
			res = append(res, TicketRes{
				ID:        ticket.ID,
				Outcomes:  ticket.Outcomes,
				Amount:    ticket.Amount.Float64(),
				TotalOdds: ticket.TotalOdds,
			})
		}

		return response.WriteJSON(c, fiber.StatusOK, "All Tickets retrieved", res, nil)

	}
}