import {
  boolean,
  date,
  doublePrecision,
  index,
  integer,
  numeric,
  pgEnum,
  pgTable,
  primaryKey,
  serial,
  text,
  timestamp,
  uniqueIndex,
} from "drizzle-orm/pg-core";

export const categoryEnum = pgEnum("category", [
  "food",
  "cafe",
  "shopping",
  "entertainment",
  "other",
]);
export const collectionTypeEnum = pgEnum("collection_type", ["folder", "trip"]);
export const memberRoleEnum = pgEnum("member_role", ["owner", "editor", "viewer"]);
export const priceRangeEnum = pgEnum("price_range", ["$", "$$", "$$$"]);

export const users = pgTable("users", {
  id: serial("id").primaryKey(),
  email: text("email").notNull().unique(),
  passwordHash: text("password_hash").notNull(),
  name: text("name").notNull(),
  initials: text("initials").notNull(),
  avatarUrl: text("avatar_url"),
  color: text("color"),
  createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
});

// Session token is a cryptographic secret — must stay random text.
// Sequential ints would be guessable and enable account takeover.
export const sessions = pgTable(
  "sessions",
  {
    id: text("id").primaryKey(),
    userId: integer("user_id")
      .notNull()
      .references(() => users.id, { onDelete: "cascade" }),
    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
    // NULL = never expires (preferred for new sessions). Older rows with
    // a timestamp value are still honoured for backward compatibility.
    expiresAt: timestamp("expires_at", { withTimezone: true }),
    userAgent: text("user_agent"),
  },
  (t) => [
    index("sessions_user_id_idx").on(t.userId),
    index("sessions_expires_at_idx").on(t.expiresAt),
  ],
);

export const places = pgTable(
  "places",
  {
    id: serial("id").primaryKey(),
    createdBy: integer("created_by")
      .notNull()
      .references(() => users.id),
    name: text("name").notNull(),
    address: text("address").notNull(),
    shortAddress: text("short_address").notNull(),
    city: text("city").notNull(),
    lat: doublePrecision("lat"),
    lng: doublePrecision("lng"),
    category: categoryEnum("category").notNull(),
    tags: text("tags").array().notNull().default([]),
    coverUrl: text("cover_url"),
    phone: text("phone"),
    website: text("website"),
    priceRange: priceRangeEnum("price_range"),
    openingHours: text("opening_hours"),
    permanentlyClosed: boolean("permanently_closed").notNull().default(false),
    avgRating: numeric("avg_rating", { precision: 3, scale: 2 }),
    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    index("places_created_by_idx").on(t.createdBy),
    index("places_category_idx").on(t.category),
  ],
);

export const userPlaceData = pgTable(
  "user_place_data",
  {
    userId: integer("user_id")
      .notNull()
      .references(() => users.id),
    placeId: integer("place_id")
      .notNull()
      .references(() => places.id, { onDelete: "cascade" }),
    notes: text("notes"),
    rating: integer("rating"),
    visited: boolean("visited").notNull().default(false),
    visitedAt: timestamp("visited_at", { withTimezone: true }),
  },
  (t) => [primaryKey({ columns: [t.userId, t.placeId] })],
);

export const collections = pgTable("collections", {
  id: serial("id").primaryKey(),
  ownerId: integer("owner_id")
    .notNull()
    .references(() => users.id),
  name: text("name").notNull(),
  type: collectionTypeEnum("type").notNull(),
  tripStart: date("trip_start"),
  tripEnd: date("trip_end"),
  inviteToken: text("invite_token").unique(),
  tokenExpiresAt: timestamp("token_expires_at", { withTimezone: true }),
  publicToken: text("public_token").unique(),
  createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
});

export const collectionMembers = pgTable(
  "collection_members",
  {
    collectionId: integer("collection_id")
      .notNull()
      .references(() => collections.id, { onDelete: "cascade" }),
    userId: integer("user_id")
      .notNull()
      .references(() => users.id),
    role: memberRoleEnum("role").notNull(),
    joinedAt: timestamp("joined_at", { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [primaryKey({ columns: [t.collectionId, t.userId] })],
);

export const collectionPlaces = pgTable(
  "collection_places",
  {
    collectionId: integer("collection_id")
      .notNull()
      .references(() => collections.id, { onDelete: "cascade" }),
    placeId: integer("place_id")
      .notNull()
      .references(() => places.id, { onDelete: "cascade" }),
    addedBy: integer("added_by")
      .notNull()
      .references(() => users.id),
    sortOrder: integer("sort_order").notNull().default(0),
    addedAt: timestamp("added_at", { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    primaryKey({ columns: [t.collectionId, t.placeId] }),
    index("collection_places_place_idx").on(t.placeId),
  ],
);

// Email-targeted invitation — one per (collection, email). Token is the
// shareable secret; once accepted, the user joins the collection at `role`.
export const invitations = pgTable(
  "invitations",
  {
    id: serial("id").primaryKey(),
    collectionId: integer("collection_id")
      .notNull()
      .references(() => collections.id, { onDelete: "cascade" }),
    email: text("email").notNull(),
    role: memberRoleEnum("role").notNull(),
    token: text("token").notNull().unique(),
    expiresAt: timestamp("expires_at", { withTimezone: true }).notNull(),
    invitedBy: integer("invited_by")
      .notNull()
      .references(() => users.id),
    acceptedAt: timestamp("accepted_at", { withTimezone: true }),
    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    uniqueIndex("invitations_collection_email_idx").on(t.collectionId, t.email),
    index("invitations_token_idx").on(t.token),
  ],
);

export const placeReviews = pgTable(
  "place_reviews",
  {
    id: serial("id").primaryKey(),
    placeId: integer("place_id")
      .notNull()
      .references(() => places.id, { onDelete: "cascade" }),
    collectionId: integer("collection_id")
      .notNull()
      .references(() => collections.id, { onDelete: "cascade" }),
    userId: integer("user_id")
      .notNull()
      .references(() => users.id),
    body: text("body").notNull(),
    rating: integer("rating"),
    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
  },
  (t) => [
    uniqueIndex("place_reviews_unique").on(t.placeId, t.collectionId, t.userId),
  ],
);