// models/advertisements/advertisements.mdl.js
const { DataTypes } = require("sequelize");
const sequelize = require("../../config/db.config");
const mdl_Users = require("../users/users.mdl");
const mdl_Assets = require("../assets/assets.mdl");

const Advertisement = sequelize.define("Advertisement", {

  // ─── Identity ─────────────────────────────────────────────────────────────
  advertisement_id: { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true, label: "Advertisement ID", order: 0, hidden: true },
  uuid: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, allowNull: false, unique: true, label: "UUID", order: 0, hidden: true },

  // ─── Identification / placement ──────────────────────────────────────────
  // placement is the source of truth for "where" (a registry key, see
  // advertisements.placements.js); type is denormalized from it on every
  // write (applyAdvertisementFields) and describes "what it looks like".
  placement: {
    type: DataTypes.STRING(100),
    allowNull: true,
    filterable: true,
    label: "Placement", order: 1
  },
  type: {
    type: DataTypes.ENUM("hero", "banner", "popup", "sidebar"),
    allowNull: false,
    filterable: true,
    label: "Format", order: 2
  },
  status: {
    type: DataTypes.ENUM("draft", "active", "scheduled", "expired", "archived"),
    allowNull: false,
    defaultValue: "draft", label: "Status", order: 3
  },

  // ─── Content ──────────────────────────────────────────────────────────────
  // Every ad is now created/edited as "content" (badge/headline/description/
  // image/link all mandatory) — applyAdvertisementFields on the backend fixes
  // this server-side rather than accepting it from the client. "image" is
  // legacy-only, left on rows created before the Image Only / Text with Image
  // toggle was removed, until they're next edited.
  content_mode: { type: DataTypes.ENUM("image", "content"), allowNull: false, defaultValue: "image", label: "Content Mode", order: 3.5 },
  // Up to 2 outline-badge chips shown alongside the headline — see MAX_BADGE_LABELS.
  badge_labels: { type: DataTypes.JSONB, allowNull: false, defaultValue: [], label: "Badge Labels", order: 4 },
  headline: { type: DataTypes.STRING(255), label: "Headline", order: 5 },
  description: { type: DataTypes.TEXT, label: "Description", order: 6 },

  // ─── Media ────────────────────────────────────────────────────────────────
  image_url: { type: DataTypes.STRING(512), label: "Image URL", order: 0, hidden: true },
  image_asset_id: { type: DataTypes.BIGINT, allowNull: true, label: "Image Asset", order: 0, hidden: true },

  // ─── Calls-to-action ──────────────────────────────────────────────────────
  // [{ label, link }, ...] — 0-2 entries depending on type
  ctas: { type: DataTypes.JSONB, allowNull: false, defaultValue: [], label: "CTAs", order: 7 },

  // Where the ad as a whole links to when clicked with no CTA of its own
  // (banners/full-image ads have no CTA row) — takes priority over landing_page.
  redirect_link: { type: DataTypes.STRING(512), allowNull: true, label: "Redirect Link", order: 7.5 },

  // Internally-authored landing page { title, description, body, links: [{label, link}] }
  // used as the click-through destination when redirect_link is empty — see
  // GET /api/client/advertisements/uuid/:uuid and the /ads/:uuid client route.
  landing_page: { type: DataTypes.JSONB, allowNull: true, label: "Landing Page", order: 0, hidden: true },

  // ─── Scheduling ───────────────────────────────────────────────────────────
  start_date: { type: DataTypes.DATE, label: "Start Date", order: 8 },
  end_date: { type: DataTypes.DATE, label: "End Date", order: 9 },

  // ─── Display behavior ─────────────────────────────────────────────────────
  order: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0, field: "order", label: "Order", order: 10 },
  is_active: { type: DataTypes.BOOLEAN, allowNull: false, defaultValue: true, label: "Active", order: 11 },
  size: { type: DataTypes.ENUM("sm", "md", "lg"), allowNull: true, label: "Size", order: 12 }, // banner-only, ignored by other types

  // ─── Metrics ──────────────────────────────────────────────────────────────
  click_count: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0, label: "Clicks", order: 13, hidden: true },

  // ─── Audit trails ─────────────────────────────────────────────────────────
  createdBy: { type: DataTypes.BIGINT, allowNull: true, label: "Created By" },
  updatedBy: { type: DataTypes.BIGINT, allowNull: true, label: "Modified By" },
  deletedBy: { type: DataTypes.BIGINT, allowNull: true, label: "Deleted By" },
}, {
  tableName: "advertisements",
  timestamps: true,   // createdAt, updatedAt
  paranoid: true,
  indexes: [
    { fields: ["uuid"] },
    { fields: ["type"] },
    { fields: ["placement"] },
    { fields: ["status"] },
    { fields: ["is_active"] },
    { fields: ["deletedAt"] },
  ],
});

Advertisement.belongsTo(mdl_Assets, { as: "image", foreignKey: "image_asset_id" });
Advertisement.belongsTo(mdl_Users, { as: "creator", foreignKey: "createdBy" });
Advertisement.belongsTo(mdl_Users, { as: "updater", foreignKey: "updatedBy" });

module.exports = Advertisement;