package server

import (
	"net/http"
	"os"

	"github.com/labstack/echo/v5"
	"music-server/internal/backend"
)

type CharacterHandler struct {
}

func NewCharacterHandler() *CharacterHandler {
	return &CharacterHandler{}
}

// GetCharacterList godoc
// @Summary Get list of characters
// @Description Returns a list of all available characters
// @Tags characters
// @Accept json
// @Produce json
// @Success 200 {array} string
// @Router /characters [get]
func (c *CharacterHandler) GetCharacterList(ctx *echo.Context) error {
	characters := backend.GetCharacterList()
	return ctx.JSON(http.StatusOK, characters)
}

// GetCharacter godoc
// @Summary Get character image
// @Description Returns the image for a specific character
// @Tags characters
// @Accept json
// @Produce image/png
// @Param name query string true "Character name"
// @Success 200 {file} file
// @Router /character [get]
func (c *CharacterHandler) GetCharacter(ctx *echo.Context) error {
	character := ctx.QueryParam("name")
	characterPath := backend.GetCharacter(character)
	file, err := os.Open(characterPath)
	if err != nil {
		return echo.NewHTTPError(http.StatusNotFound, err.Error())
	}
	defer file.Close()
	return ctx.Stream(http.StatusOK, "image/png", file)
}