<?php
declare(strict_types=1);

require_once dirname(__DIR__) . '/config/env.php';
require_once dirname(__DIR__) . '/config/db.php';

$db = db();

// ─── Tablas ───────────────────────────────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS users (
        id         INT AUTO_INCREMENT PRIMARY KEY,
        name       VARCHAR(100)  NOT NULL,
        email      VARCHAR(150)  NOT NULL UNIQUE,
        password   VARCHAR(255)  NOT NULL,
        created_at DATETIME      DEFAULT CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

$db->exec("
    CREATE TABLE IF NOT EXISTS webhook_logs (
        id              BIGINT AUTO_INCREMENT PRIMARY KEY,
        event_field     VARCHAR(50)   NOT NULL DEFAULT 'messages',
        from_number     VARCHAR(30),
        contact_name    VARCHAR(150),
        message_type    VARCHAR(30),
        message_preview TEXT,
        raw_payload     LONGTEXT,
        received_at     DATETIME      DEFAULT CURRENT_TIMESTAMP,
        INDEX idx_received_at (received_at),
        INDEX idx_from_number (from_number),
        INDEX idx_event_field (event_field)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

$db->exec("
    CREATE TABLE IF NOT EXISTS conversations (
        id           BIGINT AUTO_INCREMENT PRIMARY KEY,
        message_id   VARCHAR(100)  NOT NULL UNIQUE,
        phone_number VARCHAR(30)   NOT NULL,
        contact_name VARCHAR(150),
        direction    ENUM('inbound','outbound') DEFAULT 'inbound',
        message_type VARCHAR(30),
        content      TEXT,
        media_id     VARCHAR(150),
        timestamp    INT UNSIGNED,
        created_at   DATETIME DEFAULT CURRENT_TIMESTAMP,
        INDEX idx_conv_phone (phone_number),
        INDEX idx_conv_created (created_at)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

$db->exec("
    CREATE TABLE IF NOT EXISTS notifications (
        id           BIGINT AUTO_INCREMENT PRIMARY KEY,
        type         VARCHAR(50) NOT NULL DEFAULT 'new_message',
        reference_id BIGINT,
        phone_number VARCHAR(30),
        message      TEXT,
        is_read      TINYINT(1)  DEFAULT 0,
        created_at   DATETIME    DEFAULT CURRENT_TIMESTAMP,
        INDEX idx_notif_read (is_read),
        INDEX idx_notif_created (created_at)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

$db->exec("
    CREATE TABLE IF NOT EXISTS media_queue (
        id         BIGINT AUTO_INCREMENT PRIMARY KEY,
        message_id VARCHAR(100) NOT NULL,
        media_id   VARCHAR(150) NOT NULL,
        media_type VARCHAR(30),
        attempts   TINYINT      DEFAULT 0,
        processed  TINYINT(1)   DEFAULT 0,
        created_at DATETIME     DEFAULT CURRENT_TIMESTAMP,
        INDEX idx_mq_processed (processed),
        INDEX idx_mq_message_id (message_id)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Tabla de empresas (multi-tenant) ─────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS companies (
        id                INT AUTO_INCREMENT PRIMARY KEY,
        name              VARCHAR(150)  NOT NULL,
        display_name      VARCHAR(150),
        phone_number_id   VARCHAR(50)   NOT NULL DEFAULT '',
        display_phone     VARCHAR(30),
        api_base_url      VARCHAR(500)  NOT NULL,
        api_key           VARCHAR(255),
        bot_type          ENUM('ai','normal','hybrid') DEFAULT 'normal',
        requires_approval TINYINT(1)    DEFAULT 0,
        is_active         TINYINT(1)    DEFAULT 1,
        config_json       TEXT,
        created_at        DATETIME      DEFAULT CURRENT_TIMESTAMP,
        updated_at        DATETIME      DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        INDEX idx_phone_number_id (phone_number_id),
        INDEX idx_is_active (is_active)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Cola de mensajes salientes ──────────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS outbound_queue (
        id             BIGINT AUTO_INCREMENT PRIMARY KEY,
        company_id     INT            NOT NULL,
        to_number      VARCHAR(30)    NOT NULL,
        message_type   VARCHAR(30)    NOT NULL DEFAULT 'text',
        payload        TEXT           NOT NULL,
        status         ENUM('queued','sent','delivered','failed') DEFAULT 'queued',
        attempts       TINYINT        DEFAULT 0,
        max_attempts   TINYINT        DEFAULT 5,
        last_error     TEXT,
        wam_id         VARCHAR(100),
        created_at     DATETIME       DEFAULT CURRENT_TIMESTAMP,
        updated_at     DATETIME       DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        INDEX idx_company_status (company_id, status),
        INDEX idx_status (status),
        FOREIGN KEY (company_id) REFERENCES companies(id) ON DELETE CASCADE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Contexto de conversación del bot ─────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS bot_context (
        id              BIGINT AUTO_INCREMENT PRIMARY KEY,
        company_id      INT            NOT NULL,
        phone_number    VARCHAR(30)    NOT NULL,
        bot_type        ENUM('normal','ai') DEFAULT 'normal',
        current_node    VARCHAR(100),
        ai_history      LONGTEXT,
        metadata        TEXT,
        updated_at      DATETIME       DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        UNIQUE KEY idx_bot_context (company_id, phone_number),
        FOREIGN KEY (company_id) REFERENCES companies(id) ON DELETE CASCADE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Cola de aprobación — mensajes que requieren revisión humana ──────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS pending_approval (
        id              BIGINT AUTO_INCREMENT PRIMARY KEY,
        company_id      INT            NOT NULL,
        phone_number    VARCHAR(30)    NOT NULL,
        contact_name    VARCHAR(150),
        incoming_msg    TEXT           NOT NULL,
        bot_response    TEXT,
        bot_type        VARCHAR(30),
        context_json    TEXT,
        status          ENUM('pending','approved','rejected') DEFAULT 'pending',
        reviewed_by     VARCHAR(100),
        review_note     TEXT,
        created_at      DATETIME       DEFAULT CURRENT_TIMESTAMP,
        reviewed_at     DATETIME,
        INDEX idx_company_status (company_id, status),
        INDEX idx_status (status),
        FOREIGN KEY (company_id) REFERENCES companies(id) ON DELETE CASCADE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Agregar company_id a tablas existentes ────────────────────────────────────

try {
    $db->exec("ALTER TABLE conversations ADD COLUMN company_id INT DEFAULT NULL AFTER id, ADD INDEX idx_conv_company (company_id)");
} catch (\PDOException $e) {
    // Columna ya existe
}

try {
    $db->exec("ALTER TABLE webhook_logs ADD COLUMN company_id INT DEFAULT NULL AFTER id, ADD INDEX idx_wh_company (company_id)");
} catch (\PDOException $e) {}

try {
    $db->exec("ALTER TABLE notifications ADD COLUMN company_id INT DEFAULT NULL AFTER id, ADD INDEX idx_notif_company (company_id)");
} catch (\PDOException $e) {}

// ─── Tabla de configuración general ────────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS settings (
        `key` VARCHAR(100) NOT NULL PRIMARY KEY,
        `value` TEXT DEFAULT NULL,
        `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// Seed defaults si están vacíos
$seedSettings = [
    'whatsapp_access_token'            => '',
    'whatsapp_app_secret'              => '',
    'whatsapp_verify_token'            => '',
    'whatsapp_business_account_id'     => '',
    'whatsapp_default_phone_number_id' => '',
    'ai_provider'                      => 'mock',
    'openai_api_key'                   => '',
    'openai_model'                     => 'gpt-4o-mini',
    'gemini_api_key'                   => '',
    'gemini_model'                     => 'gemini-2.5-flash',
    'claude_api_key'                   => '',
    'claude_model'                     => 'claude-haiku-4-5',
    'ai_max_tokens'                    => '500',
    'ai_default_prompt'                => 'Eres un asistente virtual de Palmas360. Responde de forma amable y profesional.',
];
$insertStmt = $db->prepare("INSERT IGNORE INTO settings (`key`, `value`) VALUES (?, ?)");
foreach ($seedSettings as $k => $v) {
    $insertStmt->execute([$k, $v]);
}

// ─── Números WhatsApp por empresa ─────────────────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS company_phones (
        id              INT AUTO_INCREMENT PRIMARY KEY,
        company_id      INT NOT NULL,
        wa_number       VARCHAR(25) NOT NULL,
        label           VARCHAR(100) DEFAULT '',
        permission_type TINYINT NOT NULL DEFAULT 1 COMMENT '1=solo reporta, 2=solo recibe, 3=ambos',
        is_active       TINYINT NOT NULL DEFAULT 1,
        created_at      DATETIME DEFAULT CURRENT_TIMESTAMP,
        UNIQUE KEY uq_cp (company_id, wa_number),
        FOREIGN KEY (company_id) REFERENCES companies(id) ON DELETE CASCADE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Endpoints API configurables por empresa ───────────────────────────────────

$db->exec("
    CREATE TABLE IF NOT EXISTS company_endpoints (
        id              INT AUTO_INCREMENT PRIMARY KEY,
        company_id      INT NOT NULL,
        endpoint_key    VARCHAR(50) NOT NULL,
        direction       ENUM('upload','download') NOT NULL,
        url             VARCHAR(500) DEFAULT '',
        method          VARCHAR(10) DEFAULT 'GET',
        last_response   TEXT,
        last_called_at  DATETIME,
        is_active       TINYINT DEFAULT 1,
        created_at      DATETIME DEFAULT CURRENT_TIMESTAMP,
        UNIQUE KEY uq_ce (company_id, endpoint_key),
        FOREIGN KEY (company_id) REFERENCES companies(id) ON DELETE CASCADE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

$db->exec("
    CREATE TABLE IF NOT EXISTS multi_company_sessions (
        wa_number      VARCHAR(20)  NOT NULL PRIMARY KEY,
        companies_json TEXT         NOT NULL,
        selected_id    INT          DEFAULT NULL,
        expires_at     DATETIME     NOT NULL,
        updated_at     DATETIME     DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
        INDEX idx_expires (expires_at)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── AI usage logs ───────────────────────────────────────────────────────────
$db->exec("
    CREATE TABLE IF NOT EXISTS ai_logs (
        id            BIGINT       NOT NULL AUTO_INCREMENT PRIMARY KEY,
        company_id    INT          DEFAULT NULL,
        phone_number  VARCHAR(20)  DEFAULT NULL,
        provider      VARCHAR(20)  NOT NULL,
        model         VARCHAR(60)  NOT NULL DEFAULT '',
        call_type     VARCHAR(30)  NOT NULL DEFAULT 'chat',
        input_preview VARCHAR(500) DEFAULT NULL,
        output_preview VARCHAR(500) DEFAULT NULL,
        tokens_in     INT          DEFAULT NULL,
        tokens_out    INT          DEFAULT NULL,
        duration_ms   INT          DEFAULT NULL,
        created_at    DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
        INDEX idx_company  (company_id),
        INDEX idx_provider (provider),
        INDEX idx_created  (created_at)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
");

// ─── Campo erp_active_users en companies ──────────────────────────────────────
try {
    $db->exec("ALTER TABLE companies ADD COLUMN erp_active_users INT DEFAULT 0 AFTER is_active");
} catch (\PDOException $e) {}

// ─── Usuario admin por defecto ────────────────────────────────────────────────

$email    = 'admin@palmas360.com';
$password = 'Palmas360@Admin26';
$hash     = password_hash($password, PASSWORD_BCRYPT, ['cost' => 12]);

$stmt = $db->prepare("INSERT IGNORE INTO users (name, email, password) VALUES (?, ?, ?)");
$stmt->execute(['Lizandro', $email, $hash]);

echo "\n✅  Tablas creadas correctamente.\n";
echo "👤  Usuario: {$email}\n";
echo "🔑  Contraseña: {$password}\n";
echo "⚠️   Cambia la contraseña después del primer login.\n\n";