from django.db import models
from django.conf import settings
from django.db.models.fields import CharField

User = settings.AUTH_USER_MODEL

class Movie(models.Model):
    tmdb_id = models.CharField(max_length=50, unique=True)
    title = models.CharField(max_length=100, null=True)
    poster_path = models.CharField(max_length=200, null=True)
    backdrop_path = models.CharField(max_length=200, null=True)
    like_users = models.ManyToManyField(User, related_name='like_movies')


class Comment(models.Model):
    like_users = models.ManyToManyField(User, related_name='like_comments')
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    movie = models.ForeignKey(Movie, on_delete=models.CASCADE, related_name='comments')
    content = models.CharField(max_length=1000)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)


class ReComment(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    comment = models.ForeignKey(Comment, on_delete=models.CASCADE, related_name='recomments')
    content = models.CharField(max_length=1000)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)


class RatedMovie(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='rated_movies')
    movie = models.ForeignKey(Movie, on_delete=models.CASCADE, related_name='rates')
    rate = models.IntegerField()

# movie_api/urls.py
from django.contrib import admin
from django.urls import path, include
from django.conf.urls.static import static
from django.conf import settings

from rest_framework_simplejwt.views import (
    TokenObtainPairView,
    # TokenRefreshView,
)

urlpatterns = [
    path('admin/', admin.site.urls), # GET admin 페이지
    path('api/v1/token/', TokenObtainPairView.as_view(), name='token_obtain_pair'), # POST 로그인 시 토큰 발행.
    path('api/v1/accounts/', include('accounts.urls')), # accounts
    path('api/v1/movies/', include('movies.urls')), # movies
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) # media 파일 저장을 위한 URL 및 root

# movies/urls.py
from django.urls import path
from . import views
urlpatterns = [
    path('<int:tmdb_id>/comment/', views.comment_list_create), # GET POST comment 관련 정보 저장 및 조회
    path('<int:tmdb_id>/comment/<int:comment_id>/', views.comment_update_delete), # PUT DELETE 댓글 수정 및 삭제.
    path('<int:tmdb_id>/like/', views.movie_like,), # POST 영화 좋아요 수정 및 생성
    path('comments/<int:comment_id>/like/', views.comment_like,), # GET POST 댓글 좋아요 및 좋아요 조회
    path('<int:tmdb_id>/rate/', views.movie_rate), # GET POST 영화 평점 수정 및 생성
    path('<int:comment_id>/recomment/', views.recomment_list_create), # GET POST 대댓글 생성 및 조회
    path('<int:comment_id>/recomment/<int:recomment_id>/', views.recomment_delete), # DELETE 대댓글 삭제
    path('<int:tmdb_id>/like/rate/', views.get_like_rate), # GET 영화 좋아요 및 별점 조회
    path('<int:tmdb_id>/comments/best/', views.get_best_comment), # GET 베스트 댓글 조회
    path('<int:tmdb_id>/', views.set_initial_movie_info), # POST 영화 디테일 페이지 최초 진입 시에만 저장
    path('<int:tmdb_id>/backdrop/', views.get_backdrop), # GET 영화 뒷배경 가져오기.
]

# accounts/urls.py
from django.urls import path
from . import views

urlpatterns = [
    path('signup/', views.signup), # POST 회원가입
    path('users/', views.user_update_delete), # GET PUT DELETE 유저 회원정보 수정 및 삭제 그리고 조회
    path('password-change/', views.user_password_change), # PUT 비밀번호 변경
    path('<username>/follow/', views.follow), # GET POST 유저 팔로우 정보 조회 및 수정
    path('issuperuser/', views.is_superuser), # GET 슈퍼 유저인지 판별.
    path('<username>/user/movies/', views.user_movie_info), # GET 유저의 rated movie & liked movie 정보 조회
]

class CommentListSerializer(serializers.ModelSerializer):
    username = serializers.SerializerMethodField()
    
    # 이건 read_only
    # get_<field_name>으로 메서드 생성
    # self => instance, obj => Model
    def get_username(self, obj):
        return obj.user.username
    
    ...
    	fields=(...'username',) # 이렇게 추가.