package handler

import (
	"apskel-pos-be/internal/constants"
	"apskel-pos-be/internal/contract"
	"apskel-pos-be/internal/logger"
	"apskel-pos-be/internal/util"
	"strconv"

	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

// Tier Handlers
func (h *GamificationHandler) CreateTier(c *gin.Context) {
	ctx := c.Request.Context()
	var req contract.CreateTierRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::CreateTier -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::CreateTier")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateCreateTierRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::CreateTier -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::CreateTier")
		return
	}

	response, err := h.gamificationService.CreateTier(ctx, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::CreateTier -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::CreateTier")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::CreateTier")
}

func (h *GamificationHandler) GetTier(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetTier -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.TierEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::GetTier")
		return
	}

	response, err := h.gamificationService.GetTier(ctx, id)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetTier -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::GetTier")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::GetTier")
}

func (h *GamificationHandler) ListTiers(c *gin.Context) {
	ctx := c.Request.Context()
	var req contract.ListTiersRequest
	if err := c.ShouldBindQuery(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::ListTiers -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::ListTiers")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateListTiersRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::ListTiers -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::ListTiers")
		return
	}

	response, err := h.gamificationService.ListTiers(ctx, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::ListTiers -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::ListTiers")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::ListTiers")
}

func (h *GamificationHandler) UpdateTier(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateTier -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.TierEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateTier")
		return
	}

	var req contract.UpdateTierRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateTier -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateTier")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateUpdateTierRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::UpdateTier -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateTier")
		return
	}

	response, err := h.gamificationService.UpdateTier(ctx, id, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateTier -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::UpdateTier")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::UpdateTier")
}

func (h *GamificationHandler) DeleteTier(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::DeleteTier -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.TierEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::DeleteTier")
		return
	}

	err = h.gamificationService.DeleteTier(ctx, id)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::DeleteTier -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::DeleteTier")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(nil), "GamificationHandler::DeleteTier")
}

func (h *GamificationHandler) GetTierByPoints(c *gin.Context) {
	ctx := c.Request.Context()
	pointsStr := c.Param("points")
	points, err := strconv.ParseInt(pointsStr, 10, 64)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetTierByPoints -> invalid points")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.TierEntity, "Invalid points format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::GetTierByPoints")
		return
	}

	response, err := h.gamificationService.GetTierByPoints(ctx, points)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetTierByPoints -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.TierEntity, err.Error())}), "GamificationHandler::GetTierByPoints")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::GetTierByPoints")
}

// Omset Tracker Handlers
func (h *GamificationHandler) CreateOmsetTracker(c *gin.Context) {
	ctx := c.Request.Context()
	var req contract.CreateOmsetTrackerRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::CreateOmsetTracker -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::CreateOmsetTracker")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateCreateOmsetTrackerRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::CreateOmsetTracker -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::CreateOmsetTracker")
		return
	}

	response, err := h.gamificationService.CreateOmsetTracker(ctx, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::CreateOmsetTracker -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.OmsetTrackerEntity, err.Error())}), "GamificationHandler::CreateOmsetTracker")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::CreateOmsetTracker")
}

func (h *GamificationHandler) GetOmsetTracker(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetOmsetTracker -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.OmsetTrackerEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::GetOmsetTracker")
		return
	}

	response, err := h.gamificationService.GetOmsetTracker(ctx, id)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::GetOmsetTracker -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.OmsetTrackerEntity, err.Error())}), "GamificationHandler::GetOmsetTracker")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::GetOmsetTracker")
}

func (h *GamificationHandler) ListOmsetTrackers(c *gin.Context) {
	ctx := c.Request.Context()
	var req contract.ListOmsetTrackerRequest
	if err := c.ShouldBindQuery(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::ListOmsetTrackers -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::ListOmsetTrackers")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateListOmsetTrackerRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::ListOmsetTrackers -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::ListOmsetTrackers")
		return
	}

	response, err := h.gamificationService.ListOmsetTrackers(ctx, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::ListOmsetTrackers -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.OmsetTrackerEntity, err.Error())}), "GamificationHandler::ListOmsetTrackers")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::ListOmsetTrackers")
}

func (h *GamificationHandler) UpdateOmsetTracker(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateOmsetTracker -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.OmsetTrackerEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateOmsetTracker")
		return
	}

	var req contract.UpdateOmsetTrackerRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateOmsetTracker -> request binding failed")
		validationResponseError := contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateOmsetTracker")
		return
	}

	validationError, validationErrorCode := h.gamificationValidator.ValidateUpdateOmsetTrackerRequest(&req)
	if validationError != nil {
		logger.FromContext(c.Request.Context()).WithError(validationError).Error("GamificationHandler::UpdateOmsetTracker -> request validation failed")
		validationResponseError := contract.NewResponseError(validationErrorCode, constants.RequestEntity, validationError.Error())
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::UpdateOmsetTracker")
		return
	}

	response, err := h.gamificationService.UpdateOmsetTracker(ctx, id, &req)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::UpdateOmsetTracker -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.OmsetTrackerEntity, err.Error())}), "GamificationHandler::UpdateOmsetTracker")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(response), "GamificationHandler::UpdateOmsetTracker")
}

func (h *GamificationHandler) DeleteOmsetTracker(c *gin.Context) {
	ctx := c.Request.Context()
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::DeleteOmsetTracker -> invalid ID")
		validationResponseError := contract.NewResponseError(constants.InvalidFieldErrorCode, constants.OmsetTrackerEntity, "Invalid ID format")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{validationResponseError}), "GamificationHandler::DeleteOmsetTracker")
		return
	}

	err = h.gamificationService.DeleteOmsetTracker(ctx, id)
	if err != nil {
		logger.FromContext(c.Request.Context()).WithError(err).Error("GamificationHandler::DeleteOmsetTracker -> service call failed")
		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{contract.NewResponseError(constants.InternalServerErrorCode, constants.OmsetTrackerEntity, err.Error())}), "GamificationHandler::DeleteOmsetTracker")
		return
	}

	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(nil), "GamificationHandler::DeleteOmsetTracker")
}