package controllers

import (
	"net/http"

	"clapclap/internal/apperr"
	"clapclap/internal/ginctx"
	"clapclap/internal/models"
	"clapclap/internal/utils"

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

// GetAllGenres godoc
// @Summary      Get all genres
// @Description  Retrieves a list of all music genres. Use the "tree" query parameter to get a nested structure.
// @Tags         genres
// @Produce      json
// @Param        tree     query     bool    false  "Set to true to return a nested tree structure of genres and sub-genres"
// @Param        preload  query     string  false  "Relation to preload" Enums(Parent, SubGenres, Tracks)
// @Success      200      {array}   models.Genre
// @Failure      500      {object}  swaggError500
// @Router       /genres [get]
func GetAllGenres(c *gin.Context) {
	repo, _ := ginctx.GetRepo(c, "repo")

	var genres []models.Genre
	isTree := c.Query("tree")
	preloads := utils.GetReqPreloads(c.Request, utils.GetGenrePreloads())
	var err error

	if isTree == "true" {
		err = repo.GetGenreRoots(&genres, preloads)
	} else {
		err = repo.GetAllGenres(&genres, preloads)
	}

	if err != nil {
		apperr.AbortWithError(c, apperr.NewDatabaseError(err, "Failed to fetch genres"))
		return
	}

	c.JSON(http.StatusOK, genres)
}

// GetGenreByID godoc
// @Summary      Get a genre by ID
// @Description  Retrieves a specific genre's details, including its sub-genres, using its UUID
// @Tags         genres
// @Produce      json
// @Param        id       path      string  true   "Genre UUID"
// @Param        preload  query     string  false  "Relation to preload" Enums(Parent, SubGenres, Tracks)
// @Success      200      {object}  models.Genre
// @Failure      404      {object}  swaggError404
// @Failure      500      {object}  swaggError500
// @Router       /genres/{id} [get]
func GetGenreByID(c *gin.Context) {
	repo, _ := ginctx.GetRepo(c, "repo")

	id := c.Param("id")
	preloads := utils.GetReqPreloads(c.Request, utils.GetGenrePreloads())

	genre, err := repo.GetGenreByID(id, preloads)
	if err != nil {
		apperr.AbortWithError(c, apperr.NewDatabaseError(err, "Genre not found"))
		return
	}

	c.JSON(http.StatusOK, genre)
}