-- yaris-obd remote server schema
-- Applied automatically on first Postgres container start (mounted into
-- /docker-entrypoint-initdb.d/), so it only ever runs once against a fresh
-- empty database volume.

CREATE TABLE IF NOT EXISTS devices (
    id            SERIAL PRIMARY KEY,
    name          TEXT NOT NULL UNIQUE,          -- e.g. "yaris-2013"
    api_key_hash  TEXT NOT NULL,                 -- sha256 hex digest of the device's API key, never the raw key
    created_at    TIMESTAMPTZ NOT NULL DEFAULT now(),
    last_seen_at  TIMESTAMPTZ
);

CREATE TABLE IF NOT EXISTS tracking_points (
    id            BIGSERIAL PRIMARY KEY,
    device_id     INTEGER NOT NULL REFERENCES devices(id) ON DELETE CASCADE,
    vehicle_name  TEXT,
    driver_name   TEXT,
    recorded_at   TIMESTAMPTZ NOT NULL,           -- timestamp taken on the Pi when the point was captured
    gps_lat       DOUBLE PRECISION,
    gps_lon       DOUBLE PRECISION,
    speed         DOUBLE PRECISION,
    odometer      DOUBLE PRECISION,
    received_at   TIMESTAMPTZ NOT NULL DEFAULT now(),
    -- Prevent the same locally-queued row from being inserted twice on retry
    UNIQUE (device_id, recorded_at)
);

CREATE INDEX IF NOT EXISTS idx_tracking_points_device_time
    ON tracking_points (device_id, recorded_at DESC);

CREATE TABLE IF NOT EXISTS dashcam_files (
    id            BIGSERIAL PRIMARY KEY,
    device_id     INTEGER NOT NULL REFERENCES devices(id) ON DELETE CASCADE,
    relative_path TEXT NOT NULL,                  -- original sub-folder path on the dashcam SD card
    size_bytes    BIGINT NOT NULL,
    sha256        TEXT NOT NULL,
    storage_path  TEXT NOT NULL,                  -- where the file landed on the server's disk
    uploaded_at   TIMESTAMPTZ NOT NULL DEFAULT now(),
    UNIQUE (device_id, relative_path, sha256)
);

CREATE INDEX IF NOT EXISTS idx_dashcam_files_device
    ON dashcam_files (device_id, uploaded_at DESC);