-- 선단 등록 + 어망/어구 정체성 추적 시스템

-- 1. 소유자/회사
CREATE TABLE IF NOT EXISTS kcg.fleet_companies (
  id SERIAL PRIMARY KEY,
  name_cn TEXT NOT NULL,
  name_en TEXT,
  created_at TIMESTAMPTZ DEFAULT NOW()
);

-- 2. 등록 선박 (906척 참고자료 기반)
CREATE TABLE IF NOT EXISTS kcg.fleet_vessels (
  id SERIAL PRIMARY KEY,
  company_id INT REFERENCES kcg.fleet_companies(id),
  permit_no VARCHAR(20) NOT NULL,
  name_cn TEXT NOT NULL,
  name_en TEXT,
  tonnage INT,
  gear_code VARCHAR(10),
  fleet_role VARCHAR(20),
  pair_vessel_id INT REFERENCES kcg.fleet_vessels(id),
  mmsi VARCHAR(15),
  match_confidence REAL DEFAULT 0,
  match_method VARCHAR(20),
  last_seen_at TIMESTAMPTZ,
  created_at TIMESTAMPTZ DEFAULT NOW(),
  updated_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_fleet_vessels_mmsi ON kcg.fleet_vessels(mmsi);
CREATE INDEX IF NOT EXISTS idx_fleet_vessels_name_en ON kcg.fleet_vessels(name_en);
CREATE INDEX IF NOT EXISTS idx_fleet_vessels_name_cn ON kcg.fleet_vessels(name_cn);
CREATE INDEX IF NOT EXISTS idx_fleet_vessels_company ON kcg.fleet_vessels(company_id);

-- 3. 어망/어구 정체성 이력
CREATE TABLE IF NOT EXISTS kcg.gear_identity_log (
  id BIGSERIAL PRIMARY KEY,
  mmsi VARCHAR(15) NOT NULL,
  name TEXT NOT NULL,
  parent_name TEXT,
  parent_mmsi VARCHAR(15),
  parent_vessel_id INT REFERENCES kcg.fleet_vessels(id),
  gear_index_1 INT,
  gear_index_2 INT,
  lat DOUBLE PRECISION,
  lon DOUBLE PRECISION,
  match_method VARCHAR(30),
  match_confidence REAL DEFAULT 0,
  first_seen_at TIMESTAMPTZ NOT NULL,
  last_seen_at TIMESTAMPTZ NOT NULL,
  is_active BOOLEAN DEFAULT TRUE,
  created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_gear_identity_mmsi ON kcg.gear_identity_log(mmsi);
CREATE INDEX IF NOT EXISTS idx_gear_identity_parent ON kcg.gear_identity_log(parent_mmsi);
CREATE INDEX IF NOT EXISTS idx_gear_identity_active ON kcg.gear_identity_log(is_active) WHERE is_active = TRUE;

-- 4. 선단 추적 스냅샷 (5분 주기)
CREATE TABLE IF NOT EXISTS kcg.fleet_tracking_snapshot (
  id BIGSERIAL PRIMARY KEY,
  company_id INT REFERENCES kcg.fleet_companies(id),
  snapshot_time TIMESTAMPTZ NOT NULL,
  total_vessels INT,
  active_vessels INT,
  in_zone_vessels INT,
  operating_vessels INT,
  gear_count INT,
  fleet_status VARCHAR(20),
  center_lat DOUBLE PRECISION,
  center_lon DOUBLE PRECISION,
  details JSONB,
  created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_fleet_snapshot_time ON kcg.fleet_tracking_snapshot(snapshot_time DESC);
CREATE INDEX IF NOT EXISTS idx_fleet_snapshot_company ON kcg.fleet_tracking_snapshot(company_id);