const mongoose = require("mongoose");

const ctaButtonSchema = new mongoose.Schema(
  {
    label: { type: String, default: "" },
    href: { type: String, default: "" },
  },
  { _id: false },
);

const heroSchema = new mongoose.Schema(
  {
    badge: { type: String, default: "" },
    title: { type: String, default: "" },
    description: { type: String, default: "" },
    primaryButton: { type: ctaButtonSchema, default: () => ({}) },
    secondaryButton: { type: ctaButtonSchema, default: () => ({}) },
    image: { type: String, default: "" },
    imageAlt: { type: String, default: "" },
  },
  { _id: false },
);

const directoryServiceSchema = new mongoose.Schema(
  {
    icon: { type: String, default: "" },
    title: { type: String, default: "" },
    description: { type: String, default: "" },
    hours: { type: String, default: "" },
    hoursIcon: { type: String, default: "" },
    buttonLabel: { type: String, default: "" },
    buttonHref: { type: String, default: "" },
  },
  { _id: false },
);

const directorySchema = new mongoose.Schema(
  {
    title: { type: String, default: "" },
    subtitle: { type: String, default: "" },
    services: { type: [directoryServiceSchema], default: [] },
  },
  { _id: false },
);

const channelSchema = new mongoose.Schema(
  {
    icon: { type: String, default: "" },
    title: { type: String, default: "" },
    detail: { type: String, default: "" },
  },
  { _id: false },
);

const labelPlaceholderSchema = new mongoose.Schema(
  {
    label: { type: String, default: "" },
    placeholder: { type: String, default: "" },
  },
  { _id: false },
);

const departmentFieldSchema = new mongoose.Schema(
  {
    label: { type: String, default: "" },
  },
  { _id: false },
);

const supportFormFieldsSchema = new mongoose.Schema(
  {
    firstName: { type: labelPlaceholderSchema, default: () => ({}) },
    lastName: { type: labelPlaceholderSchema, default: () => ({}) },
    studentId: { type: labelPlaceholderSchema, default: () => ({}) },
    department: { type: departmentFieldSchema, default: () => ({}) },
    message: { type: labelPlaceholderSchema, default: () => ({}) },
  },
  { _id: false },
);

const contactFormSchema = new mongoose.Schema(
  {
    heading: { type: String, default: "" },
    fields: { type: supportFormFieldsSchema, default: () => ({}) },
    departments: { type: [String], default: [] },
    submitLabel: { type: String, default: "" },
    successMessage: { type: String, default: "" },
  },
  { _id: false },
);

const contactSectionSchema = new mongoose.Schema(
  {
    heading: { type: String, default: "" },
    description: { type: String, default: "" },
    channels: { type: [channelSchema], default: [] },
    form: { type: contactFormSchema, default: () => ({}) },
  },
  { _id: false },
);

const metadataSchema = new mongoose.Schema(
  {
    title: { type: String, default: "" },
    description: { type: String, default: "" },
  },
  { _id: false },
);

const studentSupportSchema = new mongoose.Schema(
  {
    slug: {
      type: String,
      required: true,
      unique: true,
      default: "student-support",
    },
    metadata: { type: metadataSchema, default: () => ({}) },
    hero: { type: heroSchema, default: () => ({}) },
    directory: { type: directorySchema, default: () => ({}) },
    contactSection: { type: contactSectionSchema, default: () => ({}) },
  },
  { timestamps: true },
);

/**
 * Seed / migrate từ file JSON (cùng shape với API frontend).
 */
studentSupportSchema.statics.migrateFromJson = async function (jsonData) {
  const slug = "student-support";
  const payload = {
    slug,
    metadata: jsonData.metadata || {},
    hero: jsonData.hero || {},
    directory: jsonData.directory || { services: [] },
    contactSection: jsonData.contactSection || {},
  };

  const existing = await this.findOne({ slug });
  if (existing) {
    existing.set(payload);
    await existing.save();
    return existing;
  }
  return this.create(payload);
};

module.exports = mongoose.model("StudentSupport", studentSupportSchema);