-- WhispAssist initial schema (Phase 2). Mirrors docs/03-data-model.md.
-- Forward-only migration applied via sqlx::migrate!.
PRAGMA foreign_keys = ON;

CREATE TABLE meetings (
    id                TEXT PRIMARY KEY,
    title             TEXT NOT NULL DEFAULT 'Untitled meeting',
    started_at        INTEGER NOT NULL,
    ended_at          INTEGER,
    duration_secs     INTEGER,
    folder_path       TEXT NOT NULL,
    audio_path        TEXT NOT NULL,
    status            TEXT NOT NULL,            -- recording|transcribing|ready|recovering|error
    language          TEXT,
    backend_used      TEXT,
    model_used        TEXT,
    calendar_event_id TEXT,
    created_at        INTEGER NOT NULL,
    updated_at        INTEGER NOT NULL
);

CREATE TABLE participants (
    id    TEXT PRIMARY KEY,
    name  TEXT NOT NULL,
    email TEXT,
    UNIQUE(name, email)
);

CREATE TABLE speakers (
    id             TEXT PRIMARY KEY,
    meeting_id     TEXT NOT NULL REFERENCES meetings(id) ON DELETE CASCADE,
    label          TEXT NOT NULL,               -- 'S1','S2',…
    display_name   TEXT,
    participant_id TEXT REFERENCES participants(id),
    color          TEXT,
    UNIQUE(meeting_id, label)
);

CREATE TABLE meeting_participants (
    meeting_id     TEXT NOT NULL REFERENCES meetings(id) ON DELETE CASCADE,
    participant_id TEXT NOT NULL REFERENCES participants(id),
    role           TEXT,                        -- organizer|required|optional
    PRIMARY KEY (meeting_id, participant_id)
);

CREATE TABLE calendar_events (
    id          TEXT PRIMARY KEY,
    source      TEXT NOT NULL,                  -- pst|graph|ics
    subject     TEXT,
    organizer   TEXT,
    starts_at   INTEGER,
    ends_at     INTEGER,
    description TEXT,
    raw_uid     TEXT
);

CREATE TABLE tags (
    id   TEXT PRIMARY KEY,
    name TEXT NOT NULL UNIQUE
);

CREATE TABLE meeting_tags (
    meeting_id TEXT NOT NULL REFERENCES meetings(id) ON DELETE CASCADE,
    tag_id     TEXT NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
    PRIMARY KEY (meeting_id, tag_id)
);

CREATE TABLE action_items (
    id           TEXT PRIMARY KEY,
    meeting_id   TEXT NOT NULL REFERENCES meetings(id) ON DELETE CASCADE,
    text         TEXT NOT NULL,
    owner        TEXT,
    due_at       INTEGER,
    confirmed    INTEGER NOT NULL DEFAULT 0,
    reminder_set INTEGER NOT NULL DEFAULT 0,
    created_at   INTEGER NOT NULL
);

CREATE VIRTUAL TABLE meeting_fts USING fts5(
    meeting_id UNINDEXED,
    title,
    transcript_text,
    notes_text,
    tokenize = 'porter unicode61'
);

CREATE INDEX idx_meetings_started ON meetings(started_at DESC);
CREATE INDEX idx_speakers_meeting ON speakers(meeting_id);
CREATE INDEX idx_action_meeting  ON action_items(meeting_id);