package handlers

import (
	"fmt"
	"strconv"
	"time"

	"github.com/SamuelTariku/FortuneBet-Backend/internal/domain"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/services/bet"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/services/wallet"
	"github.com/SamuelTariku/FortuneBet-Backend/internal/web_server/response"
	"github.com/gofiber/fiber/v2"
	"go.uber.org/zap"
)

// CreateBet godoc
// @Summary Create a bet
// @Description Creates a bet
// @Tags bet
// @Accept json
// @Produce json
// @Param createBet body domain.CreateBetReq true "Creates bet"
// @Success 200 {object} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet [post]
func (h *Handler) CreateBet(c *fiber.Ctx) error {
	userID := c.Locals("user_id").(int64)
	role := c.Locals("role").(domain.Role)
	companyID := c.Locals("company_id").(domain.ValidInt64)

	var req domain.CreateBetReq
	if err := c.BodyParser(&req); err != nil {
		h.mongoLoggerSvc.Error("Failed to parse CreateBet request",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body:"+err.Error())
	}

	res, err := h.CreateBetInternal(c, req, userID, role, companyID)
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to create bet",
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Int64("user_id", userID),
			zap.String("role", string(role)),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusInternalServerError, "Failed to create bet:"+err.Error())
	}

	h.mongoLoggerSvc.Info("Bet created successfully",
		zap.Int("status_code", fiber.StatusOK),
		zap.Int64("user_id", userID),
		zap.Time("timestamp", time.Now()),
	)

	return response.WriteJSON(c, fiber.StatusOK, "Bet Created", res, nil)
}

// CreateBetWithFastCode godoc
// @Summary Create a bet with fast code
// @Description Creates a bet with fast code
// @Tags bet
// @Accept json
// @Produce json
// @Param createBetWithFastCode body domain.CreateBetWithFastCodeReq true "Creates bet"
// @Success 200 {object} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet/fastcode [post]
func (h *Handler) CreateBetWithFastCode(c *fiber.Ctx) error {
	userID := c.Locals("user_id").(int64)
	role := c.Locals("role").(domain.Role)
	companyID := c.Locals("company_id").(domain.ValidInt64)

	var req domain.CreateBetWithFastCodeReq

	if err := c.BodyParser(&req); err != nil {
		h.mongoLoggerSvc.Error("Failed to parse CreateBet request",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body:"+err.Error())
	}

	bet, err := h.betSvc.GetBetByFastCode(c.Context(), req.FastCode)
	if err != nil {
		h.mongoLoggerSvc.Info("failed to get bet with fast code",
			zap.String("fast_code", req.FastCode),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "failed to get bet with fast code:"+err.Error())
	}

	if bet.UserID == userID {
		h.mongoLoggerSvc.Info("User cannot refer himself",
			zap.Int64("bet_id", bet.ID),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Time("timestamp", time.Now()),
			zap.Error(err),
		)
		return fiber.NewError(fiber.StatusBadRequest, "User cannot use his own referral code")
	}
	outcomes, err := h.betSvc.GetBetOutcomeByBetID(c.Context(), bet.ID)
	if err != nil {
		h.mongoLoggerSvc.Info("failed to get BetOutcomes by BetID",
			zap.Int64("bet_id", bet.ID),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Time("timestamp", time.Now()),
			zap.Error(err),
		)
		return fiber.NewError(fiber.StatusBadRequest, "failed to get BetOutcomes by BetID:"+err.Error())
	}

	bet_outcomes := []domain.CreateBetOutcomeReq{}
	for _, outcome := range outcomes {
		bet_outcomes = append(bet_outcomes, domain.CreateBetOutcomeReq{
			EventID:  outcome.EventID,
			OddID:    outcome.OddID,
			MarketID: outcome.MarketID,
		})
	}

	// This can be for both online and offline bets
	// If bet is an online bet (if the customer role creates the bet on their own)
	// then the branchID is null
	newReq := domain.CreateBetReq{
		Amount:   req.Amount,
		Outcomes: bet_outcomes,
		BranchID: req.BranchID,
	}

	res, err := h.CreateBetInternal(c, newReq, userID, role, companyID)
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to create bet",
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Int64("user_id", userID),
			zap.String("role", string(role)),
			zap.Any("newReq", newReq),
			zap.Time("timestamp", time.Now()),
			zap.Error(err),
		)
		return fiber.NewError(fiber.StatusInternalServerError, "Failed to create bet:"+err.Error())
	}

	wallet, err := h.walletSvc.GetCustomerWallet(c.Context(), bet.UserID)

	// amount added for fast code owner can be fetched from settings in db
	settingList, err := h.settingSvc.GetSettingList(c.Context())
	amount := settingList.AmountForBetReferral

	_, err = h.walletSvc.AddToWallet(c.Context(), wallet.StaticID, amount, domain.ValidInt64{},
		domain.TRANSFER_DIRECT, domain.PaymentDetails{}, fmt.Sprintf("Added %v to static wallet by referring using fast_code", amount.Float32()))
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to add reward to static bet",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Int64("user_id", userID),
			zap.Float32("amount", amount.Float32()),
			zap.Int64("static wallet_id", wallet.StaticID),
			zap.Time("timestamp", time.Now()),
			zap.Error(err),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Failed to add reward to static bet:"+err.Error())
	}

	h.mongoLoggerSvc.Info("Bet created successfully",
		zap.Int("status_code", fiber.StatusOK),
		zap.Int64("user_id", userID),
		zap.Time("timestamp", time.Now()),
	)
	return response.WriteJSON(c, fiber.StatusOK, "Bet Created", res, nil)
}

func (h *Handler) CreateBetInternal(c *fiber.Ctx, req domain.CreateBetReq, userID int64, role domain.Role, companyID domain.ValidInt64) (domain.CreateBetRes, error) {
	valErrs, ok := h.validator.Validate(c, req)
	if !ok {
		h.mongoLoggerSvc.Error("CreateBet validation failed",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Any("validation_errors", valErrs),
			zap.Time("timestamp", time.Now()),
		)
		return domain.CreateBetRes{}, fmt.Errorf("%s", valErrs)
	}

	res, err := h.betSvc.PlaceBet(c.Context(), req, userID, role, companyID)
	if err != nil {
		switch err {
		case bet.ErrEventHasBeenRemoved, bet.ErrEventHasNotEnded, bet.ErrRawOddInvalid, wallet.ErrBalanceInsufficient:
			h.mongoLoggerSvc.Info("PlaceBet failed",
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.Int64("userID", userID),
				zap.Int64("companyID", companyID.Value),
				zap.String("role", string(role)),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return domain.CreateBetRes{}, err
		}

		h.mongoLoggerSvc.Error("PlaceBet failed",
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Int64("userID", userID),
			zap.Int64("companyID", companyID.Value),
			zap.String("role", string(role)),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)

		return domain.CreateBetRes{}, err
	}

	return res, nil
}

// RandomBet godoc
// @Summary Generate a random bet
// @Description Generate a random bet
// @Tags bet
// @Accept json
// @Produce json
// @Param createBet body domain.RandomBetReq true "Create Random bet"
// @Success 200 {object} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/random/bet [post]
func (h *Handler) RandomBet(c *fiber.Ctx) error {
	userID := c.Locals("user_id").(int64)

	leagueIDQuery, err := strconv.Atoi(c.Query("league_id"))
	if err != nil {
		h.mongoLoggerSvc.Info("invalid league id",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "invalid league id")
	}

	sportIDQuery, err := strconv.Atoi(c.Query("sport_id"))
	if err != nil {
		h.mongoLoggerSvc.Info("invalid sport id",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "invalid sport id")
	}

	firstStartTimeQuery := c.Query("first_start_time")
	lastStartTimeQuery := c.Query("last_start_time")

	leagueID := domain.ValidInt32{
		Value: int32(leagueIDQuery),
		Valid: leagueIDQuery != 0,
	}
	sportID := domain.ValidInt32{
		Value: int32(sportIDQuery),
		Valid: sportIDQuery != 0,
	}

	var firstStartTime domain.ValidTime
	if firstStartTimeQuery != "" {
		firstStartTimeParsed, err := time.Parse(time.RFC3339, firstStartTimeQuery)
		if err != nil {
			h.mongoLoggerSvc.Info("invalid first_start_time format",
				zap.String("first_start_time", firstStartTimeQuery),
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusBadRequest, "Invalid first_start_time format")
		}
		firstStartTime = domain.ValidTime{
			Value: firstStartTimeParsed,
			Valid: true,
		}
	}

	var lastStartTime domain.ValidTime
	if lastStartTimeQuery != "" {
		lastStartTimeParsed, err := time.Parse(time.RFC3339, lastStartTimeQuery)
		if err != nil {
			h.mongoLoggerSvc.Info("invalid last_start_time format",
				zap.String("last_start_time", lastStartTimeQuery),
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusBadRequest, "Invalid last_start_time format")
		}
		lastStartTime = domain.ValidTime{
			Value: lastStartTimeParsed,
			Valid: true,
		}
	}

	var req domain.RandomBetReq
	if err := c.BodyParser(&req); err != nil {
		h.mongoLoggerSvc.Info("Failed to parse RandomBet request",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body:"+err.Error())
	}

	valErrs, ok := h.validator.Validate(c, req)
	if !ok {
		var errMsg string
		for field, msg := range valErrs {
			errMsg += fmt.Sprintf("%s: %s; ", field, msg)
		}
		h.mongoLoggerSvc.Error("RandomBet validation failed",
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Any("validation_errors", valErrs),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, errMsg)
	}

	var res domain.CreateBetRes
	for i := 0; i < int(req.NumberOfBets); i++ {
		res, err = h.betSvc.PlaceRandomBet(c.Context(), userID, req.BranchID, leagueID, sportID, firstStartTime, lastStartTime)
		if err != nil {
			switch err {
			case bet.ErrNoEventsAvailable:
				return fiber.NewError(fiber.StatusNotFound, "No events found")
			}

			h.mongoLoggerSvc.Error("Random Bet failed place random bet",
				zap.Int64("userID", userID),
				zap.Int64("branch_id", req.BranchID),
				zap.Int("status_code", fiber.StatusInternalServerError),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusInternalServerError, "Unable to create random bet:"+err.Error())
		}
	}

	h.mongoLoggerSvc.Info("Random bet(s) created successfully",
		zap.Int("status_code", fiber.StatusOK),
		zap.Int64("user_id", userID),
		zap.Time("timestamp", time.Now()),
	)

	return response.WriteJSON(c, fiber.StatusOK, "Bet Created", res, nil)
}

// GetAllBet godoc
// @Summary Gets all bets
// @Description Gets all the bets
// @Tags bet
// @Accept json
// @Produce json
// @Success 200 {array} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet [get]
func (h *Handler) GetAllBet(c *fiber.Ctx) error {
	role := c.Locals("role").(domain.Role)
	// companyID := c.Locals("company_id").(domain.ValidInt64)
	// branchID := c.Locals("branch_id").(domain.ValidInt64)

	var isShopBet domain.ValidBool
	isShopBetQuery := c.Query("is_shop")
	if isShopBetQuery != "" && role == domain.RoleSuperAdmin {
		isShopBetParse, err := strconv.ParseBool(isShopBetQuery)
		if err != nil {
			h.mongoLoggerSvc.Info("failed to parse is_shop_bet",
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.String("is_shop", isShopBetQuery),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusBadRequest, "failed to parse is_shop_bet")
		}
		isShopBet = domain.ValidBool{
			Value: isShopBetParse,
			Valid: true,
		}
	}

	searchQuery := c.Query("query")
	searchString := domain.ValidString{
		Value: searchQuery,
		Valid: searchQuery != "",
	}

	createdBeforeQuery := c.Query("created_before")
	var createdBefore domain.ValidTime
	if createdBeforeQuery != "" {
		createdBeforeParsed, err := time.Parse(time.RFC3339, createdBeforeQuery)
		if err != nil {
			h.mongoLoggerSvc.Info("invalid created_before format",
				zap.String("time", createdBeforeQuery),
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusBadRequest, "Invalid created_before format")
		}
		createdBefore = domain.ValidTime{
			Value: createdBeforeParsed,
			Valid: true,
		}
	}

	createdAfterQuery := c.Query("created_after")
	var createdAfter domain.ValidTime
	if createdAfterQuery != "" {
		createdAfterParsed, err := time.Parse(time.RFC3339, createdAfterQuery)
		if err != nil {
			h.mongoLoggerSvc.Info("invalid created_after format",
				zap.String("created_after", createdAfterQuery),
				zap.Int("status_code", fiber.StatusBadRequest),
				zap.Error(err),
				zap.Time("timestamp", time.Now()),
			)
			return fiber.NewError(fiber.StatusBadRequest, "Invalid created_after format")
		}
		createdAfter = domain.ValidTime{
			Value: createdAfterParsed,
			Valid: true,
		}
	}

	bets, err := h.betSvc.GetAllBets(c.Context(), domain.BetFilter{
		IsShopBet:     isShopBet,
		Query:         searchString,
		CreatedBefore: createdBefore,
		CreatedAfter:  createdAfter,
	})
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to get all bets",
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusInternalServerError, "Failed to retrieve bets፡"+err.Error())
	}

	res := make([]domain.BetRes, len(bets))
	for i, bet := range bets {
		res[i] = domain.ConvertBet(bet)
	}

	return response.WriteJSON(c, fiber.StatusOK, "All bets retrieved successfully", res, nil)
}

// GetBetByID godoc
// @Summary Gets bet by id
// @Description Gets a single bet by id
// @Tags bet
// @Accept json
// @Produce json
// @Param id path int true "Bet ID"
// @Success 200 {object} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet/{id} [get]
func (h *Handler) GetBetByID(c *fiber.Ctx) error {
	betID := c.Params("id")
	id, err := strconv.ParseInt(betID, 10, 64)
	if err != nil {
		h.mongoLoggerSvc.Info("Invalid bet ID",
			zap.String("betID", betID),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid bet ID")
	}

	bet, err := h.betSvc.GetBetByID(c.Context(), id)
	if err != nil {
		h.mongoLoggerSvc.Info("Failed to get bet by ID",
			zap.Int64("betID", id),
			zap.Int("status_code", fiber.StatusNotFound),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusNotFound, "Failed to retrieve bet")
	}

	res := domain.ConvertBet(bet)

	// h.mongoLoggerSvc.Info("Bet retrieved successfully",
	// 	zap.Int64("betID", id),
	// 	zap.Int("status_code", fiber.StatusOK),
	// 	zap.Time("timestamp", time.Now()),
	// )

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

// GetBetByFastCode godoc
// @Summary Gets bet by fast_code
// @Description Gets a single bet by fast_code
// @Tags bet
// @Accept json
// @Produce json
// @Param fast_code path int true "Bet ID"
// @Success 200 {object} domain.BetRes
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet/fastcode/{fast_code} [get]
func (h *Handler) GetBetByFastCode(c *fiber.Ctx) error {
	fastCode := c.Params("fast_code")

	bet, err := h.betSvc.GetBetByFastCode(c.Context(), fastCode)
	if err != nil {
		h.mongoLoggerSvc.Info("Failed to get bet by fast code",
			zap.String("fast_code", fastCode),
			zap.Int("status_code", fiber.StatusNotFound),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusNotFound, "Failed to find bet by fast code")
	}

	res := domain.ConvertBet(bet)

	// h.mongoLoggerSvc.Info("Bet retrieved successfully",
	// 	zap.Int64("betID", id),
	// 	zap.Int("status_code", fiber.StatusOK),
	// 	zap.Time("timestamp", time.Now()),
	// )

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

type UpdateCashOutReq struct {
	CashedOut bool
}

// UpdateCashOut godoc
// @Summary Updates the cashed out field
// @Description Updates the cashed out field
// @Tags bet
// @Accept json
// @Produce json
// @Param id path int true "Bet ID"
// @Param updateCashOut body UpdateCashOutReq true "Updates Cashed Out"
// @Success 200 {object} response.APIResponse
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet/{id} [patch]
func (h *Handler) UpdateCashOut(c *fiber.Ctx) error {
	type UpdateCashOutReq struct {
		CashedOut bool `json:"cashed_out" validate:"required" example:"true"`
	}

	betID := c.Params("id")
	id, err := strconv.ParseInt(betID, 10, 64)
	if err != nil {
		h.mongoLoggerSvc.Error("Invalid bet ID",
			zap.String("betID", betID),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid bet ID")
	}

	var req UpdateCashOutReq
	if err := c.BodyParser(&req); err != nil {
		h.mongoLoggerSvc.Error("Failed to parse UpdateCashOut request",
			zap.Int64("betID", id),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "failed to parse request body:"+err.Error())
	}

	if valErrs, ok := h.validator.Validate(c, req); !ok {
		var errMsg string
		for field, msg := range valErrs {
			errMsg += fmt.Sprintf("%s: %s; ", field, msg)
		}
		return fiber.NewError(fiber.StatusBadRequest, errMsg)
	}

	err = h.betSvc.UpdateCashOut(c.Context(), id, req.CashedOut)
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to update cash out bet",
			zap.Int64("betID", id),
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusInternalServerError, "Failed to update cash out bet")
	}

	h.mongoLoggerSvc.Info("Bet updated successfully",
		zap.Int64("betID", id),
		zap.Int("status_code", fiber.StatusOK),
		zap.Time("timestamp", time.Now()),
	)

	return response.WriteJSON(c, fiber.StatusOK, "Bet updated successfully", nil, nil)
}

// DeleteBet godoc
// @Summary Deletes bet by id
// @Description Deletes bet by id
// @Tags bet
// @Accept json
// @Produce json
// @Param id path int true "Bet ID"
// @Success 200 {object} response.APIResponse
// @Failure 400 {object} response.APIResponse
// @Failure 500 {object} response.APIResponse
// @Router /api/v1/sport/bet/{id} [delete]
func (h *Handler) DeleteBet(c *fiber.Ctx) error {
	betID := c.Params("id")
	id, err := strconv.ParseInt(betID, 10, 64)
	if err != nil {
		h.mongoLoggerSvc.Error("Invalid bet ID",
			zap.String("betID", betID),
			zap.Int("status_code", fiber.StatusBadRequest),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusBadRequest, "Invalid bet ID")
	}

	err = h.betSvc.SetBetToRemoved(c.Context(), id)
	if err != nil {
		h.mongoLoggerSvc.Error("Failed to delete bet by ID",
			zap.Int64("betID", id),
			zap.Int("status_code", fiber.StatusInternalServerError),
			zap.Error(err),
			zap.Time("timestamp", time.Now()),
		)
		return fiber.NewError(fiber.StatusInternalServerError, "Failed to delete bet:"+err.Error())
	}

	h.mongoLoggerSvc.Info("Bet removed successfully",
		zap.Int64("betID", id),
		zap.Int("status_code", fiber.StatusOK),
		zap.Time("timestamp", time.Now()),
	)

	return response.WriteJSON(c, fiber.StatusOK, "Bet removed successfully", nil, nil)
}