package api

import (
	"fmt"
	"net/http"
	"strconv"

	"github.com/labstack/echo/v4"
)

// GetMbtilesByName 获取指定名称的MBTiles瓦片
// @Summary 获取指定名称的MBTiles瓦片
// @Description 获取指定名称的MBTiles瓦片
// @Tags MBTiles
// @Accept  json
// @Produce  json
// @Param name path string true "MBTiles名称"
// @Success 200 {object} model.TileJSON
// @Router /mbtiles/{name} [get]
func (a *API) GetMbtilesByName(c echo.Context) error {
	name := c.Param("name")

	if a.store.MBTiles[name] == nil {
		return c.String(http.StatusBadRequest, "MBTiles not found")
	}

	data, err := a.store.MBTiles[name].GetTileJSON()
	data.Tiles = []string{fmt.Sprintf("http://localhost:8080/api/v1/mbtiles/%s/{z}/{x}/{y}", name)}
	if err != nil {
		return c.String(http.StatusBadRequest, "Failed to get metadata")
	}

	return c.JSON(http.StatusOK, data)
}

// GetMbtilesByNameAndZAndXAndY 获取指定名称、z、x、y的MBTiles瓦片
// @Summary 获取指定名称、z、x、y的MBTiles瓦片
// @Description 获取指定名称、z、x、y的MBTiles瓦片
// @Tags MBTiles
// @Accept  json
// @Produce  application/octet-stream
// @Param name path string true "MBTiles名称"
// @Param z path string true "z值"
// @Param x path string true "x值"
// @Param y path string true "y值"
// @Success 200 {string} string "成功"
// @Router /mbtiles/{name}/{z}/{x}/{y} [get]
func (a *API) GetMbtilesByNameAndZAndXAndY(c echo.Context) error {
	name := c.Param("name")

	if a.store.MBTiles[name] == nil {
		return c.String(http.StatusBadRequest, "MBTiles not found")
	}

	z := c.Param("z")
	zValue, err := strconv.Atoi(z)
	if err != nil {
		return c.String(http.StatusBadRequest, "Invalid z value")
	}
	x := c.Param("x")
	xValue, err := strconv.Atoi(x)
	if err != nil {
		return c.String(http.StatusBadRequest, "Invalid x value")
	}
	y := c.Param("y")
	yValue, err := strconv.Atoi(y)
	if err != nil {
		return c.String(http.StatusBadRequest, "Invalid y value")
	}

	if a.store.MBTiles[name] == nil {
		return c.String(http.StatusBadRequest, "MBTiles not found")
	}

	data, resType, err := a.store.MBTiles[name].GetTile(zValue, xValue, yValue)

	if err != nil {
		return c.String(http.StatusNotFound, "Tile not found")
	}

	if len(data) > 0 && data[0] == 0x1f && data[1] == 0x8b {
		c.Response().Header().Set("Content-Encoding", "gzip")
	}

	return c.Blob(http.StatusOK, resType, data)
}