# Auto-generated repositories
from __future__ import annotations

from base_repository import BaseRepository
from entities import Comment, Follow, Like, Post, UserProfile
from typing import Any


class CommentRepository(BaseRepository[Comment]):
    """Repository for Comment entity operations"""

    def __init__(self, table_name: str = 'SocialMedia'):
        super().__init__(Comment, table_name, 'user_id', 'sort_key')

    # Basic CRUD Operations (Generated)
    def create_comment(self, comment: Comment) -> Comment:
        """Create a new comment"""
        return self.create(comment)

    def get_comment(self, user_id: str, post_id: str, comment_id: str) -> Comment | None:
        """Get a comment by key"""
        pk = Comment.build_pk_for_lookup(user_id)
        sk = Comment.build_sk_for_lookup(post_id, comment_id)
        return self.get(pk, sk)

    def update_comment(self, comment: Comment) -> Comment:
        """Update an existing comment"""
        return self.update(comment)

    def delete_comment(self, user_id: str, post_id: str, comment_id: str) -> bool:
        """Delete a comment"""
        pk = Comment.build_pk_for_lookup(user_id)
        sk = Comment.build_sk_for_lookup(post_id, comment_id)
        return self.delete(pk, sk)

    def get_post_comments(
        self,
        user_id: str,
        post_id: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Comment], dict | None]:
        """Get comments for a specific post

        Args:
            user_id: User id
            post_id: Post id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #5
        # Operation: Query | Index: Main Table
        #
        # Main Table Query Example:
        # pk = Comment.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('COMMENT#') to filter for only Comment items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with('COMMENT#'),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass

    def add_comment(self, comment: Comment) -> Comment | None:
        """Add comment to post"""
        # TODO: Implement Access Pattern #9
        # Operation: PutItem | Index: Main Table
        #
        # Main Table PutItem Example:
        # PutItem access pattern - unconditional upsert (no version checking)
        # Creates if not exists, overwrites if exists
        # self.table.put_item(Item=comment.model_dump())
        # return comment
        pass

    def get_comments_for_post_range(
        self,
        user_id: str,
        start_comment_prefix: str,
        end_comment_prefix: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Comment], dict | None]:
        """Get comments for a post within comment_id range (Main Table Range Query)

        Args:
            user_id: User id
            start_comment_prefix: Start comment prefix
            end_comment_prefix: End comment prefix
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #16
        # Operation: Query | Index: Main Table | Range Condition: between
        # Note: 'between' requires 2 parameters (min, max) for the range condition
        #
        # Main Table Query Example:
        # pk = Comment.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('COMMENT#') to filter for only Comment items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').between(start_comment_prefix, end_comment_prefix),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass


class FollowRepository(BaseRepository[Follow]):
    """Repository for Follow entity operations"""

    def __init__(self, table_name: str = 'SocialMedia'):
        super().__init__(Follow, table_name, 'user_id', 'sort_key')

    # Basic CRUD Operations (Generated)
    def create_follow(self, follow: Follow) -> Follow:
        """Create a new follow"""
        return self.create(follow)

    def get_follow(self, user_id: str, follower_id: str) -> Follow | None:
        """Get a follow by key"""
        pk = Follow.build_pk_for_lookup(user_id)
        sk = Follow.build_sk_for_lookup(follower_id)
        return self.get(pk, sk)

    def update_follow(self, follow: Follow) -> Follow:
        """Update an existing follow"""
        return self.update(follow)

    def delete_follow(self, user_id: str, follower_id: str) -> bool:
        """Delete a follow"""
        pk = Follow.build_pk_for_lookup(user_id)
        sk = Follow.build_sk_for_lookup(follower_id)
        return self.delete(pk, sk)

    def follow_user(self, follow: Follow) -> Follow | None:
        """Follow a user"""
        # TODO: Implement Access Pattern #10
        # Operation: PutItem | Index: Main Table
        #
        # Main Table PutItem Example:
        # PutItem access pattern - unconditional upsert (no version checking)
        # Creates if not exists, overwrites if exists
        # self.table.put_item(Item=follow.model_dump())
        # return follow
        pass

    def unfollow_user(self, user_id: str, follower_id: str) -> Follow | None:
        """Unfollow a user"""
        # TODO: Implement Access Pattern #11
        # Operation: DeleteItem | Index: Main Table
        #
        # Main Table DeleteItem Example:
        # Key Building:
        # - PK is built from: user_id (template: {user_id})
        # - SK is built from: follower_id (template: FOLLOW#{follower_id})
        # pk = Follow.build_pk_for_lookup(user_id)
        # sk = Follow.build_sk_for_lookup(follower_id)
        # response = self.table.delete_item(
        #     Key={'user_id': pk, 'sort_key': sk}
        # )
        pass

    def get_user_followers(
        self,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Follow], dict | None]:
        """Get user's followers list

        Args:
            target_user_id: Target user id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #13
        # Operation: Scan | Index: Main Table
        #
        # Main Table Scan Example:
        # scan_params = {'Limit': limit}
        # scan_params['FilterExpression'] = Attr('target_user_id').eq(target_user_id)
        # if exclusive_start_key:
        #     scan_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.scan(**scan_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass

    def get_user_following(
        self,
        user_id: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Follow], dict | None]:
        """Get user's following list

        Args:
            user_id: User id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #14
        # Operation: Query | Index: Main Table
        #
        # Main Table Query Example:
        # pk = Follow.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('FOLLOW#') to filter for only Follow items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with('FOLLOW#'),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass


class LikeRepository(BaseRepository[Like]):
    """Repository for Like entity operations"""

    def __init__(self, table_name: str = 'SocialMedia'):
        super().__init__(Like, table_name, 'user_id', 'sort_key')

    # Basic CRUD Operations (Generated)
    def create_like(self, like: Like) -> Like:
        """Create a new like"""
        return self.create(like)

    def get_like(self, user_id: str, post_id: str, liker_user_id: str) -> Like | None:
        """Get a like by key"""
        pk = Like.build_pk_for_lookup(user_id)
        sk = Like.build_sk_for_lookup(post_id, liker_user_id)
        return self.get(pk, sk)

    def update_like(self, like: Like) -> Like:
        """Update an existing like"""
        return self.update(like)

    def delete_like(self, user_id: str, post_id: str, liker_user_id: str) -> bool:
        """Delete a like"""
        pk = Like.build_pk_for_lookup(user_id)
        sk = Like.build_sk_for_lookup(post_id, liker_user_id)
        return self.delete(pk, sk)

    def like_post(self, like: Like) -> Like | None:
        """Like a post"""
        # TODO: Implement Access Pattern #7
        # Operation: PutItem | Index: Main Table
        #
        # Main Table PutItem Example:
        # PutItem access pattern - unconditional upsert (no version checking)
        # Creates if not exists, overwrites if exists
        # self.table.put_item(Item=like.model_dump())
        # return like
        pass

    def unlike_post(self, user_id: str, post_id: str, liker_user_id: str) -> Like | None:
        """Unlike a post"""
        # TODO: Implement Access Pattern #8
        # Operation: DeleteItem | Index: Main Table
        #
        # Main Table DeleteItem Example:
        # Key Building:
        # - PK is built from: user_id (template: {user_id})
        # - SK is built from: post_id, liker_user_id (template: LIKE#{post_id}#{liker_user_id})
        # pk = Like.build_pk_for_lookup(user_id)
        # sk = Like.build_sk_for_lookup(post_id, liker_user_id)
        # response = self.table.delete_item(
        #     Key={'user_id': pk, 'sort_key': sk}
        # )
        pass

    def get_post_likes(
        self,
        user_id: str,
        post_id: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Like], dict | None]:
        """Get list of users who liked a specific post

        Args:
            user_id: User id
            post_id: Post id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #12
        # Operation: Query | Index: Main Table
        #
        # Main Table Query Example:
        # pk = Like.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('LIKE#') to filter for only Like items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with('LIKE#'),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass

    def get_likes_after_prefix(
        self,
        user_id: str,
        like_prefix: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Like], dict | None]:
        """Get likes for a post after a specific prefix (Main Table Range Query)

        Args:
            user_id: User id
            like_prefix: Like prefix
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #17
        # Operation: Query | Index: Main Table | Range Condition: >
        # Note: '>' requires 1 parameter for the range condition
        #
        # Main Table Query Example:
        # pk = Like.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('LIKE#') to filter for only Like items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').>(like_prefix),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass


class PostRepository(BaseRepository[Post]):
    """Repository for Post entity operations"""

    def __init__(self, table_name: str = 'SocialMedia'):
        super().__init__(Post, table_name, 'user_id', 'sort_key')

    # Basic CRUD Operations (Generated)
    def create_post(self, post: Post) -> Post:
        """Create a new post"""
        return self.create(post)

    def get_post(self, user_id: str, post_id: str) -> Post | None:
        """Get a post by key"""
        pk = Post.build_pk_for_lookup(user_id)
        sk = Post.build_sk_for_lookup(post_id)
        return self.get(pk, sk)

    def update_post(self, post: Post) -> Post:
        """Update an existing post"""
        return self.update(post)

    def delete_post(self, user_id: str, post_id: str) -> bool:
        """Delete a post"""
        pk = Post.build_pk_for_lookup(user_id)
        sk = Post.build_sk_for_lookup(post_id)
        return self.delete(pk, sk)

    def put_post(self, post: Post) -> Post | None:
        """Put (upsert) new post"""
        # TODO: Implement Access Pattern #2
        # Operation: PutItem | Index: Main Table
        #
        # Main Table PutItem Example:
        # PutItem access pattern - unconditional upsert (no version checking)
        # Creates if not exists, overwrites if exists
        # self.table.put_item(Item=post.model_dump())
        # return post
        pass

    def get_user_posts(
        self,
        user_id: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Post], dict | None]:
        """Get personalized feed - posts from followed users

        Args:
            user_id: User id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #4
        # Operation: Query | Index: Main Table
        #
        # Main Table Query Example:
        # pk = Post.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('POST#') to filter for only Post items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with('POST#'),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass

    def get_user_posts_by_prefix(
        self,
        user_id: str,
        post_id_prefix: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[Post], dict | None]:
        """Get user posts by post_id prefix (Main Table Range Query)

        Args:
            user_id: User id
            post_id_prefix: Post id prefix
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #15
        # Operation: Query | Index: Main Table | Range Condition: begins_with
        # Note: 'begins_with' requires 1 parameter for the range condition
        #
        # Main Table Query Example:
        # pk = Post.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('POST#') to filter for only Post items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with(post_id_prefix),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response(response, skip_invalid_items)
        pass


class UserProfileRepository(BaseRepository[UserProfile]):
    """Repository for UserProfile entity operations"""

    def __init__(self, table_name: str = 'SocialMedia'):
        super().__init__(UserProfile, table_name, 'user_id', 'sort_key')

    # Basic CRUD Operations (Generated)
    def create_user_profile(self, user_profile: UserProfile) -> UserProfile:
        """Create a new user_profile"""
        return self.create(user_profile)

    def get_user_profile(self, user_id: str) -> UserProfile | None:
        """Get a user_profile by key"""
        pk = UserProfile.build_pk_for_lookup(user_id)
        sk = UserProfile.build_sk_for_lookup()
        return self.get(pk, sk)

    def update_user_profile(self, user_profile: UserProfile) -> UserProfile:
        """Update an existing user_profile"""
        return self.update(user_profile)

    def delete_user_profile(self, user_id: str) -> bool:
        """Delete a user_profile"""
        pk = UserProfile.build_pk_for_lookup(user_id)
        sk = UserProfile.build_sk_for_lookup()
        return self.delete(pk, sk)

    def get_user_profile_and_posts(
        self,
        user_id: str,
        limit: int = 100,
        exclusive_start_key: dict | None = None,
        skip_invalid_items: bool = True,
    ) -> tuple[list[dict[str, Any]], dict | None]:
        """View user profile and posts

        Note: This query returns an item collection with multiple entity types.
        Returns list[dict[str, Any]] because items may have different schemas.
        Use the 'SK' field to determine entity type and parse accordingly.

        Args:
            user_id: User id
            limit: Maximum items per page (default: 100)
            exclusive_start_key: Continuation token from previous page
            skip_invalid_items: If True, skip items that fail deserialization and continue. If False, raise exception on validation errors.

        Returns:
            tuple: (items, last_evaluated_key)
        """
        # TODO: Implement Access Pattern #6
        # Operation: Query | Index: Main Table
        #
        # Main Table Query Example:
        # pk = UserProfile.build_pk_for_lookup(user_id)
        # Note: Item collection detected - multiple entities share PK "{user_id}"
        # Use begins_with('PROFILE') to filter for only UserProfile items
        # query_params = {
        #     'KeyConditionExpression': Key('user_id').eq(pk) & Key('sort_key').begins_with('PROFILE'),
        #     'Limit': limit
        # }
        # if exclusive_start_key:
        #     query_params['ExclusiveStartKey'] = exclusive_start_key
        # response = self.table.query(**query_params)
        # return self._parse_query_response_raw(response)
        pass
