-- ============================================================================
-- Phase V2-2: 초기 스키마 마이그레이션
-- V1 SQLite schema를 PostgreSQL로 포팅 + 멀티테넌시(user_id/team_id) 추가
-- ============================================================================

-- Extensions ------------------------------------------------------------------
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
CREATE EXTENSION IF NOT EXISTS "pgcrypto";

-- ============================================================================
-- profiles: auth.users 확장 (1:1)
-- ============================================================================
CREATE TABLE public.profiles (
  id          uuid PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE,
  name        text,
  avatar_url  text,
  locale      text NOT NULL DEFAULT 'ko',
  tier        text NOT NULL DEFAULT 'free' CHECK (tier IN ('free', 'pro', 'team')),
  created_at  timestamptz NOT NULL DEFAULT now(),
  updated_at  timestamptz NOT NULL DEFAULT now()
);

COMMENT ON TABLE public.profiles IS 'auth.users 확장 — 유저 메타데이터와 구독 티어';

-- ============================================================================
-- teams / team_members: 팀 협업
-- ============================================================================
CREATE TABLE public.teams (
  id          uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  name        text NOT NULL,
  owner_id    uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  avatar_url  text,
  created_at  timestamptz NOT NULL DEFAULT now(),
  updated_at  timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_teams_owner_id ON public.teams(owner_id);

CREATE TABLE public.team_members (
  team_id     uuid NOT NULL REFERENCES public.teams(id) ON DELETE CASCADE,
  user_id     uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  role        text NOT NULL CHECK (role IN ('owner', 'admin', 'member')) DEFAULT 'member',
  joined_at   timestamptz NOT NULL DEFAULT now(),
  PRIMARY KEY (team_id, user_id)
);

CREATE INDEX idx_team_members_user_id ON public.team_members(user_id);

-- ============================================================================
-- meetings: 회의 세션 (V1 meeting_sessions)
-- ============================================================================
CREATE TABLE public.meetings (
  id                uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id           uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  team_id           uuid REFERENCES public.teams(id) ON DELETE SET NULL,
  title             text,
  status            text NOT NULL CHECK (status IN ('recording', 'processing', 'completed', 'error')) DEFAULT 'recording',
  started_at        timestamptz NOT NULL DEFAULT now(),
  ended_at          timestamptz,
  duration_ms       bigint,
  raw_transcript    text,
  edited_transcript text,
  minutes_markdown  text,
  minutes_json      jsonb,
  stt_model         text,
  llm_model         text,
  stt_latency_ms    integer,
  llm_latency_ms    integer,
  error_message     text,
  audio_storage_key text,  -- storage.audio 버킷 내 경로
  created_at        timestamptz NOT NULL DEFAULT now(),
  updated_at        timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_meetings_user_id ON public.meetings(user_id);
CREATE INDEX idx_meetings_team_id ON public.meetings(team_id);
CREATE INDEX idx_meetings_status ON public.meetings(status);
CREATE INDEX idx_meetings_started_at ON public.meetings(started_at DESC);

-- ============================================================================
-- meeting_memos: 회의 중 타임스탬프 메모
-- ============================================================================
CREATE TABLE public.meeting_memos (
  id            uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  meeting_id    uuid NOT NULL REFERENCES public.meetings(id) ON DELETE CASCADE,
  user_id       uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  content       text NOT NULL,
  timestamp_ms  bigint NOT NULL,
  created_at    timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_meeting_memos_meeting_id ON public.meeting_memos(meeting_id);
CREATE INDEX idx_meeting_memos_timestamp ON public.meeting_memos(meeting_id, timestamp_ms);

-- ============================================================================
-- meeting_documents: LLM 생성 문서 (minutes/report/mindmap/custom)
-- ============================================================================
CREATE TABLE public.meeting_documents (
  id              uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  meeting_id      uuid NOT NULL REFERENCES public.meetings(id) ON DELETE CASCADE,
  user_id         uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  template_type   text NOT NULL CHECK (template_type IN ('minutes', 'report', 'idea-note', 'custom', 'mindmap')),
  title           text NOT NULL,
  content         text NOT NULL DEFAULT '',
  prompt_used     text,
  llm_model       text,
  llm_latency_ms  integer,
  created_at      timestamptz NOT NULL DEFAULT now(),
  updated_at      timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_meeting_documents_meeting_id ON public.meeting_documents(meeting_id);

-- ============================================================================
-- transcripts: 전사 세그먼트 (실시간 동기화 대상)
-- ============================================================================
CREATE TABLE public.transcripts (
  id              uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  meeting_id      uuid NOT NULL REFERENCES public.meetings(id) ON DELETE CASCADE,
  segment_index   integer NOT NULL,
  timestamp_ms    bigint NOT NULL,
  duration_ms     integer,
  text            text NOT NULL,
  speaker         text,          -- "화자 1", "화자 2" ... (Phase 15.5)
  edited          boolean NOT NULL DEFAULT false,
  created_at      timestamptz NOT NULL DEFAULT now(),
  updated_at      timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_transcripts_meeting_id ON public.transcripts(meeting_id);
CREATE UNIQUE INDEX idx_transcripts_segment ON public.transcripts(meeting_id, segment_index);

-- Realtime publication에 추가 (회의 중 실시간 동기화)
ALTER PUBLICATION supabase_realtime ADD TABLE public.transcripts;

-- ============================================================================
-- history: 음성 입력 이력 (V1 history — dictation/translate 등)
-- ============================================================================
CREATE TABLE public.history (
  id                         uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id                    uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  title                      text,
  original_text              text NOT NULL,
  polished_text              text,
  focused_app                text,
  focused_app_name           text,
  focused_app_window_title   text,
  mode                       text NOT NULL CHECK (mode IN ('dictation', 'translate', 'command', 'caption', 'file-transcription')) DEFAULT 'dictation',
  status                     text NOT NULL CHECK (status IN ('completed', 'cancelled', 'error')) DEFAULT 'completed',
  error_code                 text,
  audio_storage_key          text,
  duration                   double precision NOT NULL,
  detected_language          text,
  mic_device                 text,
  word_count                 integer NOT NULL DEFAULT 0,
  stt_model                  text,
  llm_model                  text,
  stt_latency_ms             integer,
  llm_latency_ms             integer,
  app_version                text NOT NULL DEFAULT '1.0.0',
  summary_text               text,
  created_at                 timestamptz NOT NULL DEFAULT now(),
  updated_at                 timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_history_user_id ON public.history(user_id);
CREATE INDEX idx_history_created_at ON public.history(user_id, created_at DESC);
CREATE INDEX idx_history_status ON public.history(user_id, status);
CREATE INDEX idx_history_mode ON public.history(user_id, mode);
CREATE INDEX idx_history_detected_language ON public.history(detected_language);

-- ============================================================================
-- dictionary: 사용자 사전
-- ============================================================================
CREATE TABLE public.dictionary (
  id             uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id        uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  word           text NOT NULL,
  pronunciation  text,
  category       text NOT NULL CHECK (category IN ('user', 'auto', 'technical')) DEFAULT 'user',
  usage_count    integer NOT NULL DEFAULT 0,
  last_used_at   timestamptz,
  created_at     timestamptz NOT NULL DEFAULT now(),
  updated_at     timestamptz NOT NULL DEFAULT now(),
  UNIQUE (user_id, word, category)
);

CREATE INDEX idx_dictionary_user_id ON public.dictionary(user_id);
CREATE INDEX idx_dictionary_usage_count ON public.dictionary(user_id, usage_count DESC);

-- ============================================================================
-- memo_tags: history 태그
-- ============================================================================
CREATE TABLE public.memo_tags (
  id          uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id     uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  history_id  uuid NOT NULL REFERENCES public.history(id) ON DELETE CASCADE,
  tag         text NOT NULL,
  created_at  timestamptz NOT NULL DEFAULT now(),
  UNIQUE (history_id, tag)
);

CREATE INDEX idx_memo_tags_user_id ON public.memo_tags(user_id);
CREATE INDEX idx_memo_tags_tag ON public.memo_tags(user_id, tag);

-- ============================================================================
-- daily_usage: 기능별 일일 사용량 (쿼터 집계)
-- ============================================================================
CREATE TABLE public.daily_usage (
  id        bigserial PRIMARY KEY,
  user_id   uuid NOT NULL REFERENCES auth.users(id) ON DELETE CASCADE,
  date      date NOT NULL,
  feature   text NOT NULL,
  count     integer NOT NULL DEFAULT 0,
  UNIQUE (user_id, date, feature)
);

CREATE INDEX idx_daily_usage_user_date ON public.daily_usage(user_id, date);

-- ============================================================================
-- subscriptions: Stripe 구독 연동
-- ============================================================================
CREATE TABLE public.subscriptions (
  id                       uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id                  uuid NOT NULL UNIQUE REFERENCES auth.users(id) ON DELETE CASCADE,
  tier                     text NOT NULL CHECK (tier IN ('free', 'pro', 'team')) DEFAULT 'free',
  stripe_customer_id       text,
  stripe_subscription_id   text,
  status                   text,   -- active / canceled / past_due ...
  current_period_start     timestamptz,
  current_period_end       timestamptz,
  cancel_at                timestamptz,
  created_at               timestamptz NOT NULL DEFAULT now(),
  updated_at               timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX idx_subscriptions_stripe_customer ON public.subscriptions(stripe_customer_id);