-- ========= ЮРИДИЧЕСКИЙ ОТДЕЛ: ПОЛНАЯ МИГРАЦИЯ =========
-- Миграция для создания всех таблиц юридического отдела

-- Договоры
CREATE TABLE IF NOT EXISTS legal_contracts (
  id                VARCHAR(50) PRIMARY KEY,
  number            TEXT NOT NULL UNIQUE,
  type              TEXT NOT NULL, -- Тип договора (Поставка, Услуги и т.д.)
  counterparty      TEXT NOT NULL, -- Название контрагента
  counterparty_inn  TEXT, -- ИНН контрагента (для связи с проверками)
  amount            NUMERIC(15, 2) NOT NULL,
  status            VARCHAR(20) NOT NULL DEFAULT 'draft' CHECK (status IN ('draft', 'finance_approval', 'counterparty_approval', 'signing', 'active', 'archived')),
  start_date        DATE NOT NULL,
  end_date          DATE NOT NULL,
  auto_prolongation BOOLEAN DEFAULT FALSE,
  manager           TEXT NOT NULL, -- Кто ведет договор
  has_disagreements BOOLEAN DEFAULT FALSE,
  contract_file_url TEXT, -- Ссылка на файл договора
  notes             TEXT,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  updated_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_legal_contracts_status ON legal_contracts(status);
CREATE INDEX IF NOT EXISTS idx_legal_contracts_counterparty ON legal_contracts(counterparty);
CREATE INDEX IF NOT EXISTS idx_legal_contracts_number ON legal_contracts(number);
CREATE INDEX IF NOT EXISTS idx_legal_contracts_dates ON legal_contracts(start_date, end_date);
CREATE INDEX IF NOT EXISTS idx_legal_contracts_created ON legal_contracts(created_at DESC);

-- Судебные дела
CREATE TABLE IF NOT EXISTS legal_court_cases (
  id                    VARCHAR(50) PRIMARY KEY,
  case_number           TEXT NOT NULL UNIQUE,
  type                  VARCHAR(20) NOT NULL CHECK (type IN ('arbitration', 'civil', 'debt_recovery')),
  role                  VARCHAR(20) NOT NULL CHECK (role IN ('plaintiff', 'defendant')),
  subject               TEXT NOT NULL,
  debtor_name           TEXT,
  address               TEXT,
  amount                NUMERIC(15, 2) NOT NULL,
  recovered_amount      NUMERIC(15, 2) DEFAULT 0,
  amount_at_bailiffs    NUMERIC(15, 2) DEFAULT 0,
  status                VARCHAR(20) NOT NULL DEFAULT 'pre_trial' CHECK (status IN ('pre_trial', 'litigation', 'decision_received', 'enforcement', 'closed')),
  fssp_status           TEXT,
  bailiff_name          TEXT,
  fssp_last_action_date DATE,
  next_hearing_date     DATE,
  judge                 TEXT,
  court_name            TEXT,
  case_file_url         TEXT, -- Ссылка на материалы дела
  notes                 TEXT,
  created_at            TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  updated_at            TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_legal_court_cases_status ON legal_court_cases(status);
CREATE INDEX IF NOT EXISTS idx_legal_court_cases_type ON legal_court_cases(type);
CREATE INDEX IF NOT EXISTS idx_legal_court_cases_role ON legal_court_cases(role);
CREATE INDEX IF NOT EXISTS idx_legal_court_cases_number ON legal_court_cases(case_number);
CREATE INDEX IF NOT EXISTS idx_legal_court_cases_hearing ON legal_court_cases(next_hearing_date);
CREATE INDEX IF NOT EXISTS idx_legal_court_cases_created ON legal_court_cases(created_at DESC);

-- Доверенности (оставляем для истории, но можно использовать для других целей)
CREATE TABLE IF NOT EXISTS legal_powers_of_attorney (
  id                VARCHAR(50) PRIMARY KEY,
  number            TEXT NOT NULL UNIQUE,
  issued_to         TEXT NOT NULL, -- Кому выдана
  issue_date        DATE NOT NULL,
  expiry_date       DATE NOT NULL,
  status            VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'expired', 'revoked')),
  authority         TEXT NOT NULL, -- Полномочия
  document_file_url TEXT, -- Ссылка на файл доверенности
  notes             TEXT,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  updated_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_legal_poa_status ON legal_powers_of_attorney(status);
CREATE INDEX IF NOT EXISTS idx_legal_poa_expiry ON legal_powers_of_attorney(expiry_date);
CREATE INDEX IF NOT EXISTS idx_legal_poa_number ON legal_powers_of_attorney(number);

-- История изменений договоров
CREATE TABLE IF NOT EXISTS legal_contract_history (
  id                BIGSERIAL PRIMARY KEY,
  contract_id       VARCHAR(50) NOT NULL REFERENCES legal_contracts(id) ON DELETE CASCADE,
  from_status       VARCHAR(20),
  to_status         VARCHAR(20) NOT NULL,
  changed_by        TEXT NOT NULL,
  change_reason     TEXT,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_contract_history_contract ON legal_contract_history(contract_id);
CREATE INDEX IF NOT EXISTS idx_contract_history_date ON legal_contract_history(created_at DESC);

-- История изменений судебных дел
CREATE TABLE IF NOT EXISTS legal_court_case_history (
  id                BIGSERIAL PRIMARY KEY,
  case_id           VARCHAR(50) NOT NULL REFERENCES legal_court_cases(id) ON DELETE CASCADE,
  from_status       VARCHAR(20),
  to_status         VARCHAR(20) NOT NULL,
  changed_by        TEXT NOT NULL,
  change_reason     TEXT,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_court_case_history_case ON legal_court_case_history(case_id);
CREATE INDEX IF NOT EXISTS idx_court_case_history_date ON legal_court_case_history(created_at DESC);

-- Комментарии к договорам
CREATE TABLE IF NOT EXISTS legal_contract_comments (
  id                BIGSERIAL PRIMARY KEY,
  contract_id       VARCHAR(50) NOT NULL REFERENCES legal_contracts(id) ON DELETE CASCADE,
  author            TEXT NOT NULL,
  comment           TEXT NOT NULL,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_contract_comments_contract ON legal_contract_comments(contract_id);
CREATE INDEX IF NOT EXISTS idx_contract_comments_date ON legal_contract_comments(created_at DESC);

-- Комментарии к судебным делам
CREATE TABLE IF NOT EXISTS legal_court_case_comments (
  id                BIGSERIAL PRIMARY KEY,
  case_id           VARCHAR(50) NOT NULL REFERENCES legal_court_cases(id) ON DELETE CASCADE,
  author            TEXT NOT NULL,
  comment           TEXT NOT NULL,
  created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_court_case_comments_case ON legal_court_case_comments(case_id);
CREATE INDEX IF NOT EXISTS idx_court_case_comments_date ON legal_court_case_comments(created_at DESC);

-- Комментарии для документации
COMMENT ON TABLE legal_contracts IS 'Договоры юридического отдела';
COMMENT ON TABLE legal_court_cases IS 'Судебные дела';
COMMENT ON TABLE legal_powers_of_attorney IS 'Доверенности';
COMMENT ON TABLE legal_contract_history IS 'История изменений статусов договоров';
COMMENT ON TABLE legal_court_case_history IS 'История изменений статусов судебных дел';
COMMENT ON TABLE legal_contract_comments IS 'Комментарии к договорам';
COMMENT ON TABLE legal_court_case_comments IS 'Комментарии к судебным делам';