CREATE EXTENSION IF NOT EXISTS postgis;

CREATE TABLE athletes (
    id BIGSERIAL PRIMARY KEY,

    intervals_athlete_id TEXT NOT NULL UNIQUE,
    display_name TEXT NOT NULL,

    access_token TEXT NOT NULL,
    scopes TEXT NOT NULL,

    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE oauth_states (
    state TEXT PRIMARY KEY,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE sessions (
    token_hash BYTEA PRIMARY KEY,

    athlete_id BIGINT NOT NULL
        REFERENCES athletes(id)
        ON DELETE CASCADE,

    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    last_seen_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX sessions_athlete_idx
    ON sessions (athlete_id);

CREATE TABLE activities (
    id BIGSERIAL PRIMARY KEY,

    athlete_id BIGINT NOT NULL
        REFERENCES athletes(id)
        ON DELETE CASCADE,

    intervals_activity_id TEXT NOT NULL,

    start_time TIMESTAMPTZ,
    processed_at TIMESTAMPTZ,

    activity_json JSONB,

    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),

    UNIQUE (athlete_id, intervals_activity_id)
);

CREATE INDEX activities_start_time_idx
    ON activities(start_time);

CREATE TABLE county_boundaries (
    id BIGSERIAL PRIMARY KEY,

    name TEXT NOT NULL,

    geometry geometry(MultiPolygon, 4326) NOT NULL
);

CREATE INDEX county_boundaries_geometry_idx
    ON county_boundaries
    USING GIST (geometry);

CREATE TABLE county_crossings (
    id BIGSERIAL PRIMARY KEY,

    activity_id BIGINT NOT NULL
        REFERENCES activities(id)
        ON DELETE CASCADE,

    track_index BIGINT NOT NULL,

    crossing_time TIMESTAMPTZ(3) NOT NULL,

    location geometry(Point, 4326) NOT NULL,

    from_county_id BIGINT NOT NULL
        REFERENCES county_boundaries(id),

    to_county_id BIGINT NOT NULL
        REFERENCES county_boundaries(id),

    intervals_interval JSONB,

    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX county_crossings_time_idx
    ON county_crossings(crossing_time);

CREATE INDEX county_crossings_location_idx
    ON county_crossings
    USING GIST (location);

CREATE INDEX county_crossings_direction_time_idx
    ON county_crossings(
        from_county_id,
        to_county_id,
        crossing_time
    );