-- BuhApp database schema
-- Sprint 1: users, consents, audit

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

-- USERS
CREATE TABLE IF NOT EXISTS users (
    id              UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    email           TEXT UNIQUE,
    phone           TEXT UNIQUE,
    password_hash   TEXT NOT NULL,
    name            TEXT NOT NULL,
    birthdate       DATE,
    gender          TEXT CHECK (gender IN ('m','f','o')),
    city            TEXT,
    bio             TEXT,
    photo_url       TEXT,
    is_verified     BOOLEAN DEFAULT FALSE,
    is_blocked      BOOLEAN DEFAULT FALSE,
    created_at      TIMESTAMPTZ DEFAULT NOW(),
    updated_at      TIMESTAMPTZ DEFAULT NOW(),
    last_seen_at    TIMESTAMPTZ
);

CREATE INDEX IF NOT EXISTS idx_users_last_seen ON users(last_seen_at);

-- CONSENT LOG (юр. документы, согласия при регистрации)
CREATE TABLE IF NOT EXISTS consent_log (
    id              BIGSERIAL PRIMARY KEY,
    user_id         UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    doc_type        TEXT NOT NULL CHECK (doc_type IN ('terms','privacy','disclaimer','adult')),
    doc_version     TEXT NOT NULL,
    ip              INET,
    user_agent      TEXT,
    accepted_at     TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_consent_user ON consent_log(user_id);

-- AUDIT LOG (журнал действий для разборов)
CREATE TABLE IF NOT EXISTS audit_log (
    id              BIGSERIAL PRIMARY KEY,
    user_id         UUID REFERENCES users(id) ON DELETE SET NULL,
    action          TEXT NOT NULL,
    target_type     TEXT,
    target_id       TEXT,
    metadata        JSONB,
    ip              INET,
    user_agent      TEXT,
    created_at      TIMESTAMPTZ DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_audit_user ON audit_log(user_id);
CREATE INDEX IF NOT EXISTS idx_audit_action ON audit_log(action);
CREATE INDEX IF NOT EXISTS idx_audit_created ON audit_log(created_at);