-- +goose Up
CREATE TABLE users (
    id TEXT PRIMARY KEY NOT NULL
        CHECK (length(id) = 36),
    username TEXT NOT NULL UNIQUE
        CHECK (
            length(trim(username)) > 0
            AND username = lower(trim(username))
            AND length(CAST(username AS BLOB)) <= 128
        ),
    password_hash TEXT NOT NULL
        CHECK (
            length(password_hash) > 0
            AND length(CAST(password_hash AS BLOB)) <= 255
        ),
    role TEXT NOT NULL
        CHECK (role IN ('ADMIN', 'BUYER')),
    is_active INTEGER NOT NULL
        CHECK (is_active IN (0, 1)),
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
);

CREATE TABLE devices (
    id TEXT PRIMARY KEY NOT NULL
        CHECK (length(id) = 36),
    name TEXT NOT NULL
        CHECK (
            length(trim(name)) > 0
            AND length(CAST(name AS BLOB)) <= 128
        ),
    token_hash TEXT NOT NULL UNIQUE
        CHECK (
            length(token_hash) = 64
            AND token_hash NOT GLOB '*[^0-9a-f]*'
        ),
    bound_user_id TEXT
        REFERENCES users(id) ON UPDATE RESTRICT ON DELETE RESTRICT,
    app_version TEXT
        CHECK (
            app_version IS NULL
            OR (
                length(trim(app_version)) > 0
                AND length(CAST(app_version AS BLOB)) <= 128
            )
        ),
    android_version TEXT
        CHECK (
            android_version IS NULL
            OR (
                length(trim(android_version)) > 0
                AND length(CAST(android_version AS BLOB)) <= 128
            )
        ),
    pdd_version TEXT
        CHECK (
            pdd_version IS NULL
            OR (
                length(trim(pdd_version)) > 0
                AND length(CAST(pdd_version AS BLOB)) <= 128
            )
        ),
    last_seen_at TEXT,
    is_enabled INTEGER NOT NULL
        CHECK (is_enabled IN (0, 1)),
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
);

CREATE INDEX devices_bound_user_idx
    ON devices (bound_user_id);

CREATE TABLE admin_sessions (
    id TEXT PRIMARY KEY NOT NULL
        CHECK (length(id) = 36),
    token_hash TEXT NOT NULL UNIQUE
        CHECK (
            length(token_hash) = 64
            AND token_hash NOT GLOB '*[^0-9a-f]*'
        ),
    user_id TEXT NOT NULL
        REFERENCES users(id) ON UPDATE RESTRICT ON DELETE CASCADE,
    expires_at TEXT NOT NULL,
    revoked_at TEXT,
    created_at TEXT NOT NULL
);

CREATE INDEX admin_sessions_user_expires_idx
    ON admin_sessions (user_id, expires_at);

CREATE TABLE access_tokens (
    id TEXT PRIMARY KEY NOT NULL
        CHECK (length(id) = 36),
    token_hash TEXT NOT NULL UNIQUE
        CHECK (
            length(token_hash) = 64
            AND token_hash NOT GLOB '*[^0-9a-f]*'
        ),
    user_id TEXT NOT NULL
        REFERENCES users(id) ON UPDATE RESTRICT ON DELETE CASCADE,
    device_id TEXT NOT NULL
        REFERENCES devices(id) ON UPDATE RESTRICT ON DELETE CASCADE,
    expires_at TEXT NOT NULL,
    revoked_at TEXT,
    created_at TEXT NOT NULL
);

CREATE INDEX access_tokens_user_device_expires_idx
    ON access_tokens (user_id, device_id, expires_at);

ALTER TABLE purchase_tasks
    ADD COLUMN created_by_user_id TEXT
        REFERENCES users(id) ON UPDATE RESTRICT ON DELETE RESTRICT;

ALTER TABLE task_events
    ADD COLUMN actor_user_id TEXT
        REFERENCES users(id) ON UPDATE RESTRICT ON DELETE RESTRICT;

CREATE INDEX purchase_tasks_created_by_user_idx
    ON purchase_tasks (created_by_user_id, created_at DESC, id DESC);

CREATE INDEX task_events_actor_user_idx
    ON task_events (actor_user_id, occurred_at DESC, id DESC);

-- +goose Down
DROP INDEX IF EXISTS task_events_actor_user_idx;
DROP INDEX IF EXISTS purchase_tasks_created_by_user_idx;
ALTER TABLE task_events DROP COLUMN actor_user_id;
ALTER TABLE purchase_tasks DROP COLUMN created_by_user_id;
DROP INDEX IF EXISTS access_tokens_user_device_expires_idx;
DROP TABLE IF EXISTS access_tokens;
DROP INDEX IF EXISTS admin_sessions_user_expires_idx;
DROP TABLE IF EXISTS admin_sessions;
DROP INDEX IF EXISTS devices_bound_user_idx;
DROP TABLE IF EXISTS devices;
DROP TABLE IF EXISTS users;