56 lines
1.7 KiB
MySQL
56 lines
1.7 KiB
MySQL
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-- Migration: Create playlist_follows table
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-- T0489: Create Playlist Follow Feature
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-- Create playlist_follows table
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CREATE TABLE IF NOT EXISTS playlist_follows (
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id BIGSERIAL PRIMARY KEY,
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playlist_id BIGINT NOT NULL,
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user_id BIGINT NOT NULL,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP,
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-- Foreign keys
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CONSTRAINT fk_playlist_follows_playlist
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FOREIGN KEY (playlist_id)
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REFERENCES playlists(id)
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ON DELETE CASCADE,
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CONSTRAINT fk_playlist_follows_user
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FOREIGN KEY (user_id)
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REFERENCES users(id)
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ON DELETE CASCADE,
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-- Unique constraint: un utilisateur ne peut suivre une playlist qu'une fois
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CONSTRAINT uq_playlist_follows_playlist_user
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UNIQUE (playlist_id, user_id)
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);
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-- Create indexes
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CREATE INDEX IF NOT EXISTS idx_playlist_follows_playlist_id
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ON playlist_follows(playlist_id)
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WHERE deleted_at IS NULL;
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CREATE INDEX IF NOT EXISTS idx_playlist_follows_user_id
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ON playlist_follows(user_id)
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WHERE deleted_at IS NULL;
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CREATE INDEX IF NOT EXISTS idx_playlist_follows_deleted_at
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ON playlist_follows(deleted_at);
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-- Add comment
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COMMENT ON TABLE playlist_follows IS 'Table des follows de playlists par les utilisateurs';
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-- Add follower_count column to playlists table if it doesn't exist
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_name = 'playlists' AND column_name = 'follower_count'
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) THEN
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ALTER TABLE playlists ADD COLUMN follower_count INTEGER DEFAULT 0;
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CREATE INDEX IF NOT EXISTS idx_playlists_follower_count ON playlists(follower_count);
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END IF;
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END $$;
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