-- v0.3.55-beta: doorzoekbare afbeeldingscatalogus met meervoudige thema's,
-- map-paden, eigenaarschap en instelbare opslagquota.

ALTER TABLE users
    ADD COLUMN IF NOT EXISTS image_quota_bytes BIGINT
        CHECK (image_quota_bytes IS NULL OR image_quota_bytes >= -1);
ALTER TABLE schools
    ADD COLUMN IF NOT EXISTS image_quota_bytes BIGINT
        CHECK (image_quota_bytes IS NULL OR image_quota_bytes >= -1);

CREATE TABLE IF NOT EXISTS image_themes (
    id          BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    key         TEXT UNIQUE,
    scope       TEXT NOT NULL CHECK (scope IN ('global','school','personal')),
    school_id   BIGINT REFERENCES schools(id) ON DELETE CASCADE,
    owner_id    BIGINT REFERENCES users(id) ON DELETE CASCADE,
    folder      TEXT NOT NULL DEFAULT '',
    name_nl     TEXT NOT NULL,
    name_en     TEXT NOT NULL,
    created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
    CHECK (
      (scope = 'global' AND school_id IS NULL) OR
      (scope = 'school' AND school_id IS NOT NULL AND owner_id IS NOT NULL) OR
      (scope = 'personal' AND owner_id IS NOT NULL)
    )
);
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_themes_global_name
    ON image_themes (lower(name_nl)) WHERE scope = 'global';
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_themes_school_name
    ON image_themes (school_id, lower(name_nl)) WHERE scope = 'school';
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_themes_personal_name
    ON image_themes (owner_id, lower(name_nl)) WHERE scope = 'personal';

CREATE TABLE IF NOT EXISTS image_folders (
    id          BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    scope       TEXT NOT NULL CHECK (scope IN ('global','school','personal')),
    school_id   BIGINT REFERENCES schools(id) ON DELETE CASCADE,
    owner_id    BIGINT REFERENCES users(id) ON DELETE CASCADE,
    path        TEXT NOT NULL,
    created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
    CHECK (
      (scope = 'global' AND school_id IS NULL) OR
      (scope = 'school' AND school_id IS NOT NULL AND owner_id IS NOT NULL) OR
      (scope = 'personal' AND owner_id IS NOT NULL)
    )
);
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_folders_global_path
    ON image_folders (path) WHERE scope = 'global';
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_folders_school_path
    ON image_folders (school_id, path) WHERE scope = 'school';
CREATE UNIQUE INDEX IF NOT EXISTS idx_image_folders_personal_path
    ON image_folders (owner_id, path) WHERE scope = 'personal';

CREATE TABLE IF NOT EXISTS image_assets (
    id             BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    key            TEXT NOT NULL UNIQUE,
    scope          TEXT NOT NULL CHECK (scope IN ('global','school','personal')),
    school_id      BIGINT REFERENCES schools(id) ON DELETE CASCADE,
    owner_id       BIGINT REFERENCES users(id) ON DELETE CASCADE,
    folder         TEXT NOT NULL DEFAULT '',
    name           TEXT NOT NULL,
    original_name  TEXT,
    mime_type      TEXT NOT NULL,
    size_bytes     BIGINT NOT NULL DEFAULT 0 CHECK (size_bytes >= 0),
    storage_key    TEXT UNIQUE,
    public_path    TEXT UNIQUE,
    tags           TEXT[] NOT NULL DEFAULT '{}',
    created_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
    CHECK ((storage_key IS NULL) <> (public_path IS NULL)),
    CHECK (
      (scope = 'global' AND school_id IS NULL) OR
      (scope = 'school' AND school_id IS NOT NULL AND owner_id IS NOT NULL) OR
      (scope = 'personal' AND owner_id IS NOT NULL)
    )
);
CREATE INDEX IF NOT EXISTS idx_image_assets_owner ON image_assets(owner_id);
CREATE INDEX IF NOT EXISTS idx_image_assets_school ON image_assets(school_id);
CREATE INDEX IF NOT EXISTS idx_image_assets_folder ON image_assets(scope, folder);

CREATE TABLE IF NOT EXISTS image_asset_themes (
    asset_id  BIGINT NOT NULL REFERENCES image_assets(id) ON DELETE CASCADE,
    theme_id  BIGINT NOT NULL REFERENCES image_themes(id) ON DELETE CASCADE,
    PRIMARY KEY (asset_id, theme_id)
);
CREATE INDEX IF NOT EXISTS idx_image_asset_themes_theme ON image_asset_themes(theme_id);

INSERT INTO image_themes (key, scope, name_nl, name_en)
VALUES
 ('builtin-money', 'global', 'Geld', 'Money'),
 ('builtin-coins', 'global', 'Munten', 'Coins'),
 ('builtin-banknotes', 'global', 'Briefgeld', 'Banknotes')
ON CONFLICT (key) DO NOTHING;

INSERT INTO image_folders (scope, path)
VALUES ('global','Rekenen'), ('global','Rekenen/Geld'),
       ('global','Rekenen/Geld/Munten'), ('global','Rekenen/Geld/Briefgeld')
ON CONFLICT DO NOTHING;

INSERT INTO image_assets (key, scope, folder, name, mime_type, public_path, tags)
VALUES
 ('builtin-money-coin-1', 'global', 'Rekenen/Geld/Munten', '1 cent', 'image/png', '/img/money/coin-1.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-2', 'global', 'Rekenen/Geld/Munten', '2 cent', 'image/png', '/img/money/coin-2.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-5', 'global', 'Rekenen/Geld/Munten', '5 cent', 'image/png', '/img/money/coin-5.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-10', 'global', 'Rekenen/Geld/Munten', '10 cent', 'image/png', '/img/money/coin-10.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-20', 'global', 'Rekenen/Geld/Munten', '20 cent', 'image/png', '/img/money/coin-20.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-50', 'global', 'Rekenen/Geld/Munten', '50 cent', 'image/png', '/img/money/coin-50.png', ARRAY['geld','money','munt','coin','cent']),
 ('builtin-money-coin-100', 'global', 'Rekenen/Geld/Munten', '1 euro', 'image/png', '/img/money/coin-100.png', ARRAY['geld','money','munt','coin','euro']),
 ('builtin-money-coin-200', 'global', 'Rekenen/Geld/Munten', '2 euro', 'image/png', '/img/money/coin-200.png', ARRAY['geld','money','munt','coin','euro']),
 ('builtin-money-note-500', 'global', 'Rekenen/Geld/Briefgeld', '5 euro', 'image/jpeg', '/img/money/note-500.jpg', ARRAY['geld','money','briefgeld','banknote','euro']),
 ('builtin-money-note-1000', 'global', 'Rekenen/Geld/Briefgeld', '10 euro', 'image/jpeg', '/img/money/note-1000.jpg', ARRAY['geld','money','briefgeld','banknote','euro']),
 ('builtin-money-note-2000', 'global', 'Rekenen/Geld/Briefgeld', '20 euro', 'image/jpeg', '/img/money/note-2000.jpg', ARRAY['geld','money','briefgeld','banknote','euro']),
 ('builtin-money-note-5000', 'global', 'Rekenen/Geld/Briefgeld', '50 euro', 'image/jpeg', '/img/money/note-5000.jpg', ARRAY['geld','money','briefgeld','banknote','euro'])
ON CONFLICT (key) DO NOTHING;

INSERT INTO image_asset_themes (asset_id, theme_id)
SELECT a.id, t.id
FROM image_assets a
JOIN image_themes t ON t.key = 'builtin-money'
WHERE a.key LIKE 'builtin-money-%'
ON CONFLICT DO NOTHING;

INSERT INTO image_asset_themes (asset_id, theme_id)
SELECT a.id, t.id
FROM image_assets a
JOIN image_themes t ON t.key = CASE
  WHEN a.key LIKE 'builtin-money-coin-%' THEN 'builtin-coins'
  ELSE 'builtin-banknotes'
END
WHERE a.key LIKE 'builtin-money-%'
ON CONFLICT DO NOTHING;