package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"strconv"

	"github.com/gorilla/mux"
)

func homeLink(w http.ResponseWriter, r *http.Request) {
	movies, err := db.GetMovies()
	if err != nil {
		log.Fatal("Error showing homepage (all movies)")
	}
	json.NewEncoder(w).Encode(movies)
}

func getMovies(w http.ResponseWriter, r *http.Request) {
	movies, err := db.GetMovies()
	if err != nil {
		log.Fatal("Error getting all movies")
	}
	json.NewEncoder(w).Encode(movies)
}

func getOneMovie(w http.ResponseWriter, r *http.Request) {
	movieIDstr := mux.Vars(r)["id"]
	movieID, err := strconv.Atoi(movieIDstr)
	if err != nil {
		log.Println("Error: invalid movie ID passed")
		return
	}
	mov, err := db.GetMovieById(movieID)
	if err != nil {
		log.Fatal("Error getting one movie")
	}
	json.NewEncoder(w).Encode(mov)
}

func getTaggedMovies(w http.ResponseWriter, r *http.Request) {
	tagIDstr := mux.Vars(r)["id"]
	tagID, err := strconv.Atoi(tagIDstr)
	if err != nil {
		fmt.Fprintf(w, "Error: invalid tag ID passed")
		return
	}
	movies, err := db.GetMoviesByTag(tagID)
	if err != nil {
		fmt.Fprintf(w, "Error fetching movies by tag")
		return
	}
	json.NewEncoder(w).Encode(movies)
}

func getTags(w http.ResponseWriter, r *http.Request) {
	tags, err := db.GetTags()
	if err != nil {
		log.Fatal("Error getting all tags")
	}
	json.NewEncoder(w).Encode(tags)
}

func getOneTag(w http.ResponseWriter, r *http.Request) {
	tagIDstr := mux.Vars(r)["id"]
	tagID, err := strconv.Atoi(tagIDstr)
	if err != nil {
		log.Println("Error: invalid tag ID passed")
		return
	}
	tag, err := db.GetTagById(tagID)
	if err != nil {
		log.Fatal("Error getting one tag")
	}
	json.NewEncoder(w).Encode(tag)
}