package handlers

import (
	"git.itzana.me/strafesnet/go-grpc/maps_extended"
	"git.itzana.me/strafesnet/maps-service/pkg/public_api/dto"
	"github.com/gin-gonic/gin"
	log "github.com/sirupsen/logrus"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
	"net/http"
	"strconv"
)

// MapHandler handles HTTP requests related to maps.
type MapHandler struct {
	*Handler
}

// NewMapHandler creates a new MapHandler with the provided options.
func NewMapHandler(options ...HandlerOption) (*MapHandler, error) {
	baseHandler, err := NewHandler(options...)
	if err != nil {
		return nil, err
	}
	return &MapHandler{
		Handler: baseHandler,
	}, nil
}

// @Summary Get map by ID
// @Description Get a specific map by its ID
// @Tags maps
// @Produce json
// @Security ApiKeyAuth
// @Param id path int true "Map ID"
// @Success 200 {object} dto.Response[dto.Map]
// @Failure 404 {object} dto.Error "Map not found"
// @Failure default {object} dto.Error "General error response"
// @Router /map/{id} [get]
func (h *MapHandler) Get(ctx *gin.Context) {
	// Extract map ID from path parameter
	id := ctx.Param("id")
	mapID, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: "Invalid map ID format",
		})
		return
	}

	// Call the gRPC service
	mapData, err := maps_extended.NewMapsServiceClient(h.mapsClient).Get(ctx, &maps_extended.MapId{
		ID: mapID,
	})
	if err != nil {
		statusCode := http.StatusInternalServerError
		errorMessage := "Failed to get map"

		// Check if it's a "not found" error
		if status.Code(err) == codes.NotFound {
			statusCode = http.StatusNotFound
			errorMessage = "Map not found"
		}

		ctx.JSON(statusCode, dto.Error{
			Error: errorMessage,
		})
		log.WithError(err).Error(
			"Failed to get map",
		)
		return
	}

	// Convert gRPC MapResponse object to dto.Map object
	var mapDto dto.Map
	result := mapDto.FromGRPC(mapData)

	// Return the map data
	ctx.JSON(http.StatusOK, dto.Response[dto.Map]{
		Data: *result,
	})
}

// @Summary List maps
// @Description Get a list of maps
// @Tags maps
// @Produce json
// @Security ApiKeyAuth
// @Param page_size query int false "Page size (max 100)" default(10) minimum(1) maximum(100)
// @Param page_number query int false "Page number" default(1) minimum(1)
// @Param filter query dto.MapFilter false "Map filter parameters"
// @Success 200 {object} dto.PagedResponse[dto.Map]
// @Failure default {object} dto.Error "General error response"
// @Router /map [get]
func (h *MapHandler) List(ctx *gin.Context) {
	// Extract and constrain pagination parameters
	query := struct {
		PageSize   int `form:"page_size,default=10" binding:"min=1,max=100"`
		PageNumber int `form:"page_number,default=1" binding:"min=1"`
		SortBy     int `form:"sort_by,default=0" binding:"min=0,max=3"`
	}{}
	if err := ctx.ShouldBindQuery(&query); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Get list filter
	var filter dto.MapFilter
	if err := ctx.ShouldBindQuery(&filter); err != nil {
		ctx.JSON(http.StatusBadRequest, dto.Error{
			Error: err.Error(),
		})
		return
	}

	// Call the gRPC service
	mapList, err := maps_extended.NewMapsServiceClient(h.mapsClient).List(ctx, &maps_extended.ListRequest{
		Filter: &maps_extended.MapFilter{
			GameID: filter.GameID,
		},
		Page: &maps_extended.Pagination{
			Size:   uint32(query.PageSize),
			Number: uint32(query.PageNumber),
		},
	})
	if err != nil {
		ctx.JSON(http.StatusInternalServerError, dto.Error{
			Error: "Failed to list maps",
		})
		log.WithError(err).Error(
			"Failed to list maps",
		)
		return
	}

	// Convert gRPC MapResponse objects to dto.Map objects
	dtoMaps := make([]dto.Map, len(mapList.Maps))
	for i, m := range mapList.Maps {
		var mapDto dto.Map
		dtoMaps[i] = *mapDto.FromGRPC(m)
	}

	// Return the paged response
	ctx.JSON(http.StatusOK, dto.PagedResponse[dto.Map]{
		Data: dtoMaps,
		Pagination: dto.Pagination{
			Page:     query.PageNumber,
			PageSize: query.PageSize,
		},
	})
}