const fs = require("fs");
const path = require("path");
const { DatabaseSync } = require("node:sqlite");
const config = require("./config");
const { now, makeSlug } = require("./utils");

fs.mkdirSync(path.dirname(config.databasePath), { recursive: true });
fs.mkdirSync(config.uploadDir, { recursive: true });
fs.mkdirSync(config.backupDir, { recursive: true });

const db = new DatabaseSync(config.databasePath);
db.exec("PRAGMA journal_mode = WAL");
db.exec("PRAGMA foreign_keys = ON");

function migrate() {
  db.exec(`
    CREATE TABLE IF NOT EXISTS administrators (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL,
      email TEXT NOT NULL UNIQUE,
      password_hash TEXT NOT NULL,
      role TEXT NOT NULL DEFAULT 'owner',
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL,
      last_login_at TEXT
    );

    CREATE TABLE IF NOT EXISTS sessions (
      sid TEXT PRIMARY KEY,
      sess TEXT NOT NULL,
      expired_at INTEGER NOT NULL
    );

    CREATE TABLE IF NOT EXISTS settings (
      key TEXT PRIMARY KEY,
      value TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS pages (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      slug TEXT NOT NULL UNIQUE,
      title TEXT NOT NULL,
      subtitle TEXT,
      intro TEXT,
      header_image_id INTEGER,
      background_image_id INTEGER,
      meta_title TEXT,
      meta_description TEXT,
      og_title TEXT,
      og_description TEXT,
      og_image_id INTEGER,
      canonical_url TEXT,
      search_visible INTEGER NOT NULL DEFAULT 1,
      status TEXT NOT NULL DEFAULT 'published',
      draft_json TEXT,
      published_at TEXT,
      updated_at TEXT NOT NULL,
      FOREIGN KEY(header_image_id) REFERENCES media(id) ON DELETE SET NULL,
      FOREIGN KEY(background_image_id) REFERENCES media(id) ON DELETE SET NULL,
      FOREIGN KEY(og_image_id) REFERENCES media(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS page_sections (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      page_id INTEGER NOT NULL,
      section_key TEXT,
      title TEXT,
      body TEXT,
      layout TEXT NOT NULL DEFAULT 'text',
      image_id INTEGER,
      background_image_id INTEGER,
      background_color TEXT,
      button_label TEXT,
      button_url TEXT,
      display_order INTEGER NOT NULL DEFAULT 0,
      is_published INTEGER NOT NULL DEFAULT 1,
      data_json TEXT,
      updated_at TEXT NOT NULL,
      FOREIGN KEY(page_id) REFERENCES pages(id) ON DELETE CASCADE,
      FOREIGN KEY(image_id) REFERENCES media(id) ON DELETE SET NULL,
      FOREIGN KEY(background_image_id) REFERENCES media(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS media (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      file_name TEXT NOT NULL,
      original_name TEXT NOT NULL,
      title TEXT,
      alt_text TEXT,
      category TEXT,
      mime_type TEXT NOT NULL,
      size_bytes INTEGER NOT NULL,
      width INTEGER,
      height INTEGER,
      url TEXT NOT NULL,
      thumb_url TEXT,
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS categories (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL UNIQUE,
      slug TEXT NOT NULL UNIQUE,
      display_order INTEGER NOT NULL DEFAULT 0
    );

    CREATE TABLE IF NOT EXISTS tags (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL UNIQUE,
      slug TEXT NOT NULL UNIQUE
    );

    CREATE TABLE IF NOT EXISTS items (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL,
      slug TEXT NOT NULL UNIQUE,
      short_description TEXT,
      full_description TEXT,
      category_id INTEGER,
      main_image_id INTEGER,
      price TEXT,
      starting_price TEXT,
      price_range TEXT,
      contact_for_pricing INTEGER NOT NULL DEFAULT 0,
      quantity TEXT,
      availability_status TEXT NOT NULL DEFAULT 'Available',
      custom_order_available INTEGER NOT NULL DEFAULT 0,
      color_size_notes TEXT,
      material_notes TEXT,
      care_instructions TEXT,
      featured INTEGER NOT NULL DEFAULT 0,
      newly_added INTEGER NOT NULL DEFAULT 0,
      on_sale INTEGER NOT NULL DEFAULT 0,
      sale_text TEXT,
      display_order INTEGER NOT NULL DEFAULT 0,
      is_published INTEGER NOT NULL DEFAULT 1,
      is_archived INTEGER NOT NULL DEFAULT 0,
      draft_json TEXT,
      date_added TEXT NOT NULL,
      published_at TEXT,
      updated_at TEXT NOT NULL,
      FOREIGN KEY(category_id) REFERENCES categories(id) ON DELETE SET NULL,
      FOREIGN KEY(main_image_id) REFERENCES media(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS item_images (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      item_id INTEGER NOT NULL,
      media_id INTEGER NOT NULL,
      display_order INTEGER NOT NULL DEFAULT 0,
      is_main INTEGER NOT NULL DEFAULT 0,
      FOREIGN KEY(item_id) REFERENCES items(id) ON DELETE CASCADE,
      FOREIGN KEY(media_id) REFERENCES media(id) ON DELETE CASCADE
    );

    CREATE TABLE IF NOT EXISTS item_tags (
      item_id INTEGER NOT NULL,
      tag_id INTEGER NOT NULL,
      PRIMARY KEY(item_id, tag_id),
      FOREIGN KEY(item_id) REFERENCES items(id) ON DELETE CASCADE,
      FOREIGN KEY(tag_id) REFERENCES tags(id) ON DELETE CASCADE
    );

    CREATE TABLE IF NOT EXISTS services (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL,
      slug TEXT NOT NULL UNIQUE,
      image_id INTEGER,
      short_description TEXT,
      full_description TEXT,
      pricing_note TEXT,
      display_order INTEGER NOT NULL DEFAULT 0,
      featured INTEGER NOT NULL DEFAULT 0,
      is_published INTEGER NOT NULL DEFAULT 1,
      draft_json TEXT,
      published_at TEXT,
      updated_at TEXT NOT NULL,
      FOREIGN KEY(image_id) REFERENCES media(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS equipment (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL,
      type TEXT,
      brand TEXT,
      model TEXT,
      description TEXT,
      image_id INTEGER,
      display_order INTEGER NOT NULL DEFAULT 0,
      is_published INTEGER NOT NULL DEFAULT 1,
      updated_at TEXT NOT NULL,
      FOREIGN KEY(image_id) REFERENCES media(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS messages (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      name TEXT NOT NULL,
      email TEXT NOT NULL,
      phone TEXT,
      preferred_contact TEXT,
      subject TEXT NOT NULL,
      message TEXT NOT NULL,
      related_item TEXT,
      related_service TEXT,
      consent INTEGER NOT NULL DEFAULT 0,
      source_page TEXT,
      status TEXT NOT NULL DEFAULT 'unread',
      spam_status TEXT NOT NULL DEFAULT 'clean',
      ip_hash TEXT,
      user_agent TEXT,
      email_notification_status TEXT NOT NULL DEFAULT 'not_configured',
      email_error TEXT,
      created_at TEXT NOT NULL,
      updated_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS navigation (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      label TEXT NOT NULL,
      url TEXT NOT NULL,
      kind TEXT NOT NULL DEFAULT 'internal',
      opens_new_tab INTEGER NOT NULL DEFAULT 0,
      display_order INTEGER NOT NULL DEFAULT 0,
      is_published INTEGER NOT NULL DEFAULT 1
    );

    CREATE TABLE IF NOT EXISTS revisions (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      record_type TEXT NOT NULL,
      record_id INTEGER NOT NULL,
      title TEXT,
      snapshot_json TEXT NOT NULL,
      created_by INTEGER,
      created_at TEXT NOT NULL,
      FOREIGN KEY(created_by) REFERENCES administrators(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS audit_logs (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      admin_id INTEGER,
      action TEXT NOT NULL,
      details TEXT,
      ip_address TEXT,
      created_at TEXT NOT NULL,
      FOREIGN KEY(admin_id) REFERENCES administrators(id) ON DELETE SET NULL
    );

    CREATE TABLE IF NOT EXISTS backups (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      file_name TEXT NOT NULL,
      file_path TEXT NOT NULL,
      size_bytes INTEGER NOT NULL,
      created_at TEXT NOT NULL
    );

    CREATE TABLE IF NOT EXISTS rate_limits (
      key TEXT PRIMARY KEY,
      count INTEGER NOT NULL,
      reset_at INTEGER NOT NULL
    );

    CREATE INDEX IF NOT EXISTS idx_items_public ON items(is_published, is_archived, name);
    CREATE INDEX IF NOT EXISTS idx_items_flags ON items(featured, newly_added, on_sale);
    CREATE INDEX IF NOT EXISTS idx_services_public ON services(is_published, display_order);
    CREATE INDEX IF NOT EXISTS idx_messages_status ON messages(status, created_at);
    CREATE INDEX IF NOT EXISTS idx_page_sections_order ON page_sections(page_id, display_order);
    CREATE INDEX IF NOT EXISTS idx_revisions_record ON revisions(record_type, record_id, created_at);
  `);
}

function setSetting(key, value) {
  db.prepare(`
    INSERT INTO settings (key, value, updated_at)
    VALUES (?, ?, ?)
    ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = excluded.updated_at
  `).run(key, String(value ?? ""), now());
}

function getSetting(key, fallback = "") {
  const row = db.prepare("SELECT value FROM settings WHERE key = ?").get(key);
  return row ? row.value : fallback;
}

function allSettings() {
  const rows = db.prepare("SELECT key, value FROM settings").all();
  return Object.fromEntries(rows.map((row) => [row.key, row.value]));
}

function ensureCategory(name) {
  const slug = makeSlug(name, "category");
  db.prepare(`
    INSERT INTO categories (name, slug, display_order)
    VALUES (?, ?, (SELECT COALESCE(MAX(display_order), 0) + 10 FROM categories))
    ON CONFLICT(name) DO NOTHING
  `).run(name, slug);
  return db.prepare("SELECT id FROM categories WHERE name = ?").get(name).id;
}

function seed() {
  const seeded = getSetting("system.seeded", "");
  if (seeded) return;

  const ts = now();
  const settings = {
    "system.seeded": ts,
    "business.name": "Debbie Windler Seamstress",
    "business.tagline": "Alterations, custom sewing, embroidery, and handmade items",
    "business.email": "replace-with-owner-email@example.com",
    "business.phone": "",
    "business.facebook": "",
    "business.service_area": "Service area to be supplied",
    "business.hours": "By appointment",
    "business.preferred_contact": "Email or website contact form",
    "business.footer_text": "Warm, careful sewing work for everyday clothing and special occasions.",
    "site.title": "Debbie Windler Seamstress",
    "site.description": "Alterations, custom sewing, embroidery, and handmade items.",
    "theme.bg": "#fffaf5",
    "theme.bg_alt": "#f4e8df",
    "theme.text": "#342b28",
    "theme.heading": "#2d2522",
    "theme.link": "#7d3f45",
    "theme.button": "#7d3f45",
    "theme.button_text": "#ffffff",
    "theme.accent": "#7a8f73",
    "theme.radius": "8",
    "theme.spacing": "comfortable",
    "theme.width": "1120",
    "theme.heading_font": "Georgia, 'Times New Roman', serif",
    "theme.body_font": "Arial, Helvetica, sans-serif",
    "theme.footer_style": "light",
    "home.hero.title": "Debbie Windler Seamstress",
    "home.hero.subtitle": "Alterations, custom sewing, embroidery, and handmade pieces, with sample wording ready for Debbie to replace.",
    "home.hero.contact": "Contact Debbie to talk through your project.",
    "home.hero.image": "/uploads/sample-hero.png",
    "home.hero.position": "center",
    "home.hero.size": "cover",
    "home.hero.overlay": "light",
    "home.hero.overlay_opacity": "0.28",
    "home.hero.text_color": "#2d2522",
    "home.hero.button1_label": "Contact Debbie",
    "home.hero.button1_url": "/about-contact#contact-form",
    "home.hero.button2_label": "View Items",
    "home.hero.button2_url": "/items",
    "home.highlight.title": "Featured and Newly Added",
    "home.highlight.intro": "Sample cards show how items can be featured, marked new, or offered as custom orders.",
    "home.highlight.background_color": "#f4e8df",
    "maintenance.enabled": "false",
    "maintenance.message": "The website is getting a careful refresh. Please check back soon.",
    "maintenance.return_note": "",
    "maintenance.artwork": ""
  };
  for (const [key, value] of Object.entries(settings)) setSetting(key, value);

  const pageInsert = db.prepare(`
    INSERT INTO pages (slug, title, subtitle, intro, meta_title, meta_description, status, published_at, updated_at)
    VALUES (?, ?, ?, ?, ?, ?, 'published', ?, ?)
  `);
  const pages = [
    ["home", "Home", "Welcome to Debbie Windler Seamstress", "Sample home page copy can be replaced from the owner area."],
    ["items", "Items Available and Custom Orders", "Browse sample items alphabetically.", "Items can be available, made to order, on sale, sold as examples, seasonal, or hidden."],
    ["services", "Services", "Alterations, repairs, custom sewing, and embroidery.", "Service examples are seeded so Debbie can edit or remove them."],
    ["about-contact", "About and Contact", "A personal introduction and the full contact form.", "This page keeps Debbie's contact details editable and does not show a private home address by default."]
  ];
  for (const page of pages) pageInsert.run(page[0], page[1], page[2], page[3], page[1], page[3], ts, ts);

  const pageBySlug = db.prepare("SELECT id FROM pages WHERE slug = ?");
  const sectionInsert = db.prepare(`
    INSERT INTO page_sections
      (page_id, section_key, title, body, layout, display_order, is_published, data_json, updated_at)
    VALUES (?, ?, ?, ?, ?, ?, 1, ?, ?)
  `);
  sectionInsert.run(pageBySlug.get("home").id, "intro", "Sewing Services With a Personal Touch", "<p>This sample introduction can describe Debbie's experience, favorite work, and how customers should reach out.</p>", "image-right", 10, "{}", ts);
  sectionInsert.run(pageBySlug.get("home").id, "contact-callout", "Have a project in mind?", "<p>Use the contact form to ask about alterations, embroidery, handmade items, or special orders.</p>", "contact-callout", 30, "{}", ts);
  sectionInsert.run(pageBySlug.get("services").id, "service-note", "Not sure what to ask for?", "<p>Send a note with the garment or project details. Photos can be discussed later by email if needed.</p>", "contact-callout", 20, "{}", ts);
  sectionInsert.run(pageBySlug.get("about-contact").id, "about", "About Debbie", "<p>Sample biography text: Debbie's real sewing history, experience, and photos can be added here from the owner area.</p>", "text", 10, "{}", ts);

  const categories = ["Alterations", "Handmade Items", "Embroidery", "Custom Orders", "Seasonal"];
  const categoryIds = Object.fromEntries(categories.map((name) => [name, ensureCategory(name)]));
  const itemInsert = db.prepare(`
    INSERT INTO items
      (name, slug, short_description, full_description, category_id, price, starting_price, price_range, contact_for_pricing,
       availability_status, custom_order_available, material_notes, care_instructions, featured, newly_added, on_sale,
       sale_text, display_order, is_published, date_added, published_at, updated_at)
    VALUES
      (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 1, ?, ?, ?)
  `);
  const sampleItems = [
    ["Baby Blanket Example", "Soft sample listing for a custom baby blanket.", "<p>Replace this with true details, sizes, fabrics, and ordering notes.</p>", "Handmade Items", "", "Contact for starting price", "", 1, "Made to Order", 1, "Fabric details to be supplied.", "Care instructions to be supplied.", 1, 1, 0, "", 10],
    ["Embroidered Tote Bag", "Sample tote bag entry for embroidery or custom wording.", "<p>This is sample content only and can be changed or hidden.</p>", "Embroidery", "", "", "", 1, "Custom Order", 1, "Canvas or fabric notes can go here.", "Spot clean or care note to be supplied.", 1, 1, 0, "", 20],
    ["Formalwear Alteration Example", "A sold/example listing showing previous-style work without checkout.", "<p>Use sold examples to show the type of work Debbie can discuss with customers.</p>", "Alterations", "", "", "", 1, "Sold", 0, "", "", 0, 0, 0, "", 30],
    ["Seasonal Pillow Cover", "Sample seasonal handmade item.", "<p>Mark items seasonal, available, hidden, sold, or made to order.</p>", "Seasonal", "$00 sample", "", "", 0, "Available", 1, "Material notes to be supplied.", "Care instructions to be supplied.", 1, 0, 1, "Sample sale badge", 40]
  ];
  for (const item of sampleItems) {
    itemInsert.run(item[0], makeSlug(item[0], "item"), item[1], item[2], categoryIds[item[3]], item[4], item[5], item[6], item[7], item[8], item[9], item[10], item[11], item[12], item[13], item[14], item[15], item[16], ts, ts, ts);
  }

  const serviceInsert = db.prepare(`
    INSERT INTO services
      (name, slug, short_description, full_description, pricing_note, display_order, featured, is_published, published_at, updated_at)
    VALUES (?, ?, ?, ?, ?, ?, ?, 1, ?, ?)
  `);
  [
    ["Clothing Alterations", "Hems, fit adjustments, and everyday garment alterations.", "<p>Sample service details. Debbie can replace this with her exact services and policies.</p>", "Pricing depends on the garment and work needed.", 10, 1],
    ["Zipper Repair and Replacement", "Repair or replace zippers on clothing and fabric items.", "<p>Describe accepted items and turnaround once details are known.</p>", "Contact for pricing.", 20, 1],
    ["Wedding Dress Alterations", "Fittings and alterations for wedding dresses and formalwear.", "<p>Sample text only. Add appointment expectations and timing when ready.</p>", "Contact early for availability.", 30, 1],
    ["Embroidery", "Custom embroidery projects and decorative additions.", "<p>Describe machine embroidery options, setup needs, and project limits.</p>", "Contact for pricing.", 40, 1],
    ["Baby Blankets", "Handmade or custom baby blanket projects.", "<p>Describe fabric choices, size options, and custom order timing.</p>", "Starting price to be supplied.", 50, 0],
    ["Patches Sewn Onto Clothing", "Patch placement and sewing for jackets, uniforms, and garments.", "<p>Describe accepted materials and any preparation instructions.</p>", "Contact for pricing.", 60, 0]
  ].forEach((service) => serviceInsert.run(service[0], makeSlug(service[0], "service"), service[1], service[2], service[3], service[4], service[5], ts, ts));

  const equipmentInsert = db.prepare(`
    INSERT INTO equipment (name, type, brand, model, description, display_order, is_published, updated_at)
    VALUES (?, ?, ?, ?, ?, ?, 1, ?)
  `);
  equipmentInsert.run("Industrial Sewing Machine", "Sewing machine", "", "", "Sample equipment entry. Add the real brand, model, and photo when available.", 10, ts);
  equipmentInsert.run("Embroidery Machine", "Embroidery machine", "", "", "Sample equipment entry for embroidery work.", 20, ts);
  equipmentInsert.run("Thread Rack", "Supplies", "", "", "Sample equipment entry for thread colors and materials.", 30, ts);

  const navInsert = db.prepare("INSERT INTO navigation (label, url, kind, display_order, is_published) VALUES (?, ?, 'internal', ?, 1)");
  [
    ["Home", "/", 10],
    ["Items", "/items", 20],
    ["Services", "/services", 30],
    ["About and Contact", "/about-contact", 40]
  ].forEach((nav) => navInsert.run(...nav));
}

function saveRevision(type, id, title, snapshot, adminId) {
  db.prepare(`
    INSERT INTO revisions (record_type, record_id, title, snapshot_json, created_by, created_at)
    VALUES (?, ?, ?, ?, ?, ?)
  `).run(type, id, title || "", JSON.stringify(snapshot), adminId || null, now());

  const old = db.prepare(`
    SELECT id FROM revisions
    WHERE record_type = ? AND record_id = ?
    ORDER BY created_at DESC
    LIMIT -1 OFFSET 10
  `).all(type, id);
  if (old.length) {
    db.prepare(`DELETE FROM revisions WHERE id IN (${old.map(() => "?").join(",")})`).run(...old.map((row) => row.id));
  }
}

function audit(adminId, action, details, ipAddress) {
  db.prepare(`
    INSERT INTO audit_logs (admin_id, action, details, ip_address, created_at)
    VALUES (?, ?, ?, ?, ?)
  `).run(adminId || null, action, details || "", ipAddress || "", now());
}

migrate();
seed();

if (require.main === module) {
  console.log(`Database ready at ${config.databasePath}`);
}

module.exports = {
  db,
  migrate,
  seed,
  setSetting,
  getSetting,
  allSettings,
  ensureCategory,
  saveRevision,
  audit
};