-- VaultDrop 012 down: revert to V1 schema
DROP FUNCTION IF EXISTS resolve_effective_role;

DROP TABLE IF EXISTS sync_queue CASCADE;
DROP TABLE IF EXISTS retention_policies CASCADE;
DROP TABLE IF EXISTS rebac_relations CASCADE;
DROP TABLE IF EXISTS resource_placements CASCADE;
DROP TABLE IF EXISTS resource_variants CASCADE;
DROP TABLE IF EXISTS resource_tags CASCADE;
DROP TABLE IF EXISTS refresh_tokens CASCADE;
DROP TABLE IF EXISTS storage_locations CASCADE;
DROP TABLE IF EXISTS resources CASCADE;
DROP TABLE IF EXISTS tags CASCADE;
DROP TABLE IF EXISTS users CASCADE;

-- Restore V1 tables
CREATE TABLE users (
    id TEXT PRIMARY KEY NOT NULL DEFAULT gen_random_uuid(),
    username TEXT NOT NULL UNIQUE,
    password_hash TEXT NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE tags (
    id TEXT PRIMARY KEY NOT NULL DEFAULT gen_random_uuid(),
    parent_tag_id TEXT,
    tag_name TEXT NOT NULL,
    tag_type TEXT NOT NULL DEFAULT 'none',
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE files (
    id TEXT PRIMARY KEY NOT NULL DEFAULT gen_random_uuid(),
    name TEXT NOT NULL,
    mime_type TEXT NOT NULL DEFAULT '',
    size BIGINT NOT NULL DEFAULT 0,
    storage_key TEXT NOT NULL DEFAULT '',
    checksum TEXT NOT NULL DEFAULT '',
    ocr_text TEXT NOT NULL DEFAULT '',
    is_folder BOOLEAN NOT NULL DEFAULT false,
    parent_file_id TEXT,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE file_tags (
    id TEXT PRIMARY KEY NOT NULL DEFAULT gen_random_uuid(),
    tag_id TEXT,
    file_id TEXT
);

CREATE TABLE thumbnails (
    id TEXT PRIMARY KEY DEFAULT gen_random_uuid(),
    file_id TEXT NOT NULL REFERENCES files(id) ON DELETE CASCADE,
    page_number INTEGER NOT NULL,
    resolution_label TEXT NOT NULL,
    width INTEGER NOT NULL,
    height INTEGER NOT NULL,
    storage_key TEXT NOT NULL,
    mime_type TEXT NOT NULL DEFAULT 'image/jpeg',
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE refresh_tokens (
    id TEXT NOT NULL DEFAULT gen_random_uuid(),
    user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    token_hash TEXT NOT NULL,
    expires_at TIMESTAMP NOT NULL,
    revoked BOOLEAN NOT NULL DEFAULT FALSE,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);