CREATE SCHEMA arimelody;

-- Schema verison
CREATE TABLE arimelody.schema_version (
    version INTEGER PRIMARY KEY,
    applied_at TIMESTAMP DEFAULT current_timestamp
);

--
-- Tables
--

-- Accounts
CREATE TABLE arimelody.account (
    id uuid DEFAULT gen_random_uuid(), 
    username text NOT NULL UNIQUE, 
    password text NOT NULL, 
    email text, 
    avatar_url text,
    created_at TIMESTAMP DEFAULT current_timestamp
);
ALTER TABLE arimelody.account ADD CONSTRAINT account_pk PRIMARY KEY (id);

-- Privilege
CREATE TABLE arimelody.privilege (
    account uuid NOT NULL, 
    privilege text NOT NULL
);
ALTER TABLE arimelody.privilege ADD CONSTRAINT privilege_pk PRIMARY KEY (account, privilege);

-- TOTP
CREATE TABLE arimelody.totp (
    account uuid NOT NULL, 
    name text NOT NULL, 
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);
ALTER TABLE arimelody.totp ADD CONSTRAINT totp_pk PRIMARY KEY (account, name);

-- Invites
CREATE TABLE arimelody.invite (
    code text NOT NULL, 
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    expires_at TIMESTAMP NOT NULL
);
ALTER TABLE arimelody.invite ADD CONSTRAINT invite_pk PRIMARY KEY (code);

-- Tokens
CREATE TABLE arimelody.token (
    token TEXT,
    account UUID NOT NULL,
    user_agent TEXT NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT current_timestamp,
    expires_at TIMESTAMP DEFAULT NULL
);
ALTER TABLE arimelody.token ADD CONSTRAINT token_pk PRIMARY KEY (token);


-- Artists (should be applicable to all art)
CREATE TABLE arimelody.artist (
    id character varying(64),
    name text NOT NULL,
    website text,
    avatar text
);
ALTER TABLE arimelody.artist ADD CONSTRAINT artist_pk PRIMARY KEY (id);

-- Music releases
CREATE TABLE arimelody.musicrelease (
    id character varying(64) NOT NULL,
    visible bool DEFAULT false,
    title text NOT NULL,
    description text,
    type text,
    release_date TIMESTAMP NOT NULL,
    artwork text,
    buyname text,
    buylink text,
    copyright text,
    copyrightURL text
);
ALTER TABLE arimelody.musicrelease ADD CONSTRAINT musicrelease_pk PRIMARY KEY (id);

-- Music links (external platform links under a release)
CREATE TABLE arimelody.musiclink (
    release character varying(64) NOT NULL,
    name text NOT NULL,
    url text NOT NULL
);
ALTER TABLE arimelody.musiclink ADD CONSTRAINT musiclink_pk PRIMARY KEY (release, name);

-- Music credits (artist credits under a release)
CREATE TABLE arimelody.musiccredit (
    release character varying(64) NOT NULL,
    artist character varying(64) NOT NULL,
    role text NOT NULL,
    is_primary boolean DEFAULT false
);
ALTER TABLE arimelody.musiccredit ADD CONSTRAINT musiccredit_pk PRIMARY KEY (release, artist);

-- Music tracks (tracks under a release)
CREATE TABLE arimelody.musictrack (
    id uuid DEFAULT gen_random_uuid(),
    title text NOT NULL,
    description text,
    lyrics text,
    preview_url text
);
ALTER TABLE arimelody.musictrack ADD CONSTRAINT musictrack_pk PRIMARY KEY (id);

-- Music release/track pairs
CREATE TABLE arimelody.musicreleasetrack (
    release character varying(64) NOT NULL,
    track uuid NOT NULL,
    number integer NOT NULL
);
ALTER TABLE arimelody.musicreleasetrack ADD CONSTRAINT musicreleasetrack_pk PRIMARY KEY (release, track);



--
-- Foreign keys
--

ALTER TABLE arimelody.privilege ADD CONSTRAINT privilege_account_fk FOREIGN KEY (account) REFERENCES account(id) ON DELETE CASCADE;
ALTER TABLE arimelody.totp ADD CONSTRAINT totp_account_fk FOREIGN KEY (account) REFERENCES account(id) ON DELETE CASCADE;
ALTER TABLE arimelody.token ADD CONSTRAINT token_account_fk FOREIGN KEY (account) REFERENCES account(id) ON DELETE CASCADE;

ALTER TABLE arimelody.musiccredit ADD CONSTRAINT musiccredit_artist_fk FOREIGN KEY (artist) REFERENCES artist(id) ON DELETE CASCADE ON UPDATE CASCADE;
ALTER TABLE arimelody.musiccredit ADD CONSTRAINT musiccredit_release_fk FOREIGN KEY (release) REFERENCES musicrelease(id) ON DELETE CASCADE;
ALTER TABLE arimelody.musiclink ADD CONSTRAINT musiclink_release_fk FOREIGN KEY (release) REFERENCES musicrelease(id) ON UPDATE CASCADE ON DELETE CASCADE;
ALTER TABLE arimelody.musicreleasetrack ADD CONSTRAINT music_pair_trackref_fk FOREIGN KEY (release) REFERENCES musicrelease(id) ON DELETE CASCADE;
ALTER TABLE arimelody.musicreleasetrack ADD CONSTRAINT music_pair_releaseref_fk FOREIGN KEY (track) REFERENCES musictrack(id) ON DELETE CASCADE;