-- Migration 001 — Phase 1 foundation (AGENTS.md §7).
-- Tables may grow in later phases. Never hard-delete devices or history.

CREATE TABLE IF NOT EXISTS devices (
    id          INTEGER PRIMARY KEY,
    name        TEXT    NOT NULL,
    child       TEXT    NOT NULL,
    platform    TEXT    NOT NULL CHECK (platform IN ('android', 'windows')),
    topic       TEXT    NOT NULL UNIQUE,
    online      INTEGER NOT NULL DEFAULT 0,
    last_seen   TEXT,
    created_at  TEXT    NOT NULL DEFAULT (datetime('now')),
    updated_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS schedules (
    id          INTEGER PRIMARY KEY,
    device_id   INTEGER NOT NULL REFERENCES devices(id),
    weekday     INTEGER NOT NULL CHECK (weekday BETWEEN 0 AND 6), -- 0 = Monday
    start_time  TEXT    NOT NULL,                                  -- HH:MM
    end_time    TEXT    NOT NULL,                                  -- HH:MM
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_schedules_device ON schedules(device_id);

CREATE TABLE IF NOT EXISTS blocklist (
    id          INTEGER PRIMARY KEY,
    device_id   INTEGER REFERENCES devices(id), -- NULL = applies to every device
    kind        TEXT    NOT NULL CHECK (kind IN ('app', 'site')),
    value       TEXT    NOT NULL,
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_blocklist_device ON blocklist(device_id);

CREATE TABLE IF NOT EXISTS allowlist (
    id          INTEGER PRIMARY KEY,
    device_id   INTEGER REFERENCES devices(id), -- NULL = applies to every device
    kind        TEXT    NOT NULL CHECK (kind IN ('app', 'site')),
    value       TEXT    NOT NULL,
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_allowlist_device ON allowlist(device_id);

-- Desired state per device. The Control Service is the only writer.
CREATE TABLE IF NOT EXISTS state (
    device_id   INTEGER PRIMARY KEY REFERENCES devices(id),
    locked      INTEGER NOT NULL DEFAULT 0,
    until       TEXT,
    allow_json  TEXT,
    updated_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS telemetry (
    id          INTEGER PRIMARY KEY,
    device_id   INTEGER NOT NULL REFERENCES devices(id),
    app         TEXT,
    domain      TEXT,
    seconds     INTEGER NOT NULL DEFAULT 0,
    day         TEXT    NOT NULL, -- YYYY-MM-DD, local day
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_telemetry_device_day ON telemetry(device_id, day);

CREATE TABLE IF NOT EXISTS overrides (
    id          INTEGER PRIMARY KEY,
    device_id   INTEGER NOT NULL REFERENCES devices(id),
    actor       TEXT    NOT NULL,
    action      TEXT    NOT NULL,
    until       TEXT,
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_overrides_device ON overrides(device_id);

-- Append-only audit log. Size-capped by a later phase, never edited in place.
CREATE TABLE IF NOT EXISTS audit (
    id          INTEGER PRIMARY KEY,
    actor       TEXT    NOT NULL,
    action      TEXT    NOT NULL,
    device_id   INTEGER REFERENCES devices(id),
    detail      TEXT,
    created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_audit_created ON audit(created_at);