feat: Added Instagram channel migration (#11181)

This PR is part of https://github.com/chatwoot/chatwoot/pull/11054 to
make the review cycle easier.

app/models/account.rb

@@ -56,6 +56,7 @@ class Account < ApplicationRecord
   has_many :data_imports, dependent: :destroy_async
   has_many :email_channels, dependent: :destroy_async, class_name: '::Channel::Email'
   has_many :facebook_pages, dependent: :destroy_async, class_name: '::Channel::FacebookPage'
+  has_many :instagram_channels, dependent: :destroy_async, class_name: '::Channel::Instagram'
   has_many :hooks, dependent: :destroy_async, class_name: 'Integrations::Hook'
   has_many :inboxes, dependent: :destroy_async
   has_many :labels, dependent: :destroy_async

app/models/channel/instagram.rb

@@ -0,0 +1,28 @@
+# == Schema Information
+#
+# Table name: channel_instagram
+#
+#  id           :bigint           not null, primary key
+#  access_token :string           not null
+#  expires_at   :datetime         not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  account_id   :integer          not null
+#  instagram_id :string           not null
+#
+# Indexes
+#
+#  index_channel_instagram_on_instagram_id  (instagram_id) UNIQUE
+#
+class Channel::Instagram < ApplicationRecord
+  include Channelable
+
+  self.table_name = 'channel_instagram'
+
+  validates :access_token, presence: true
+  validates :instagram_id, uniqueness: true, presence: true
+
+  def name
+    'Instagram'
+  end
+end

db/migrate/20250326034635_add_instagram_channel.rb

@@ -0,0 +1,13 @@
+class AddInstagramChannel < ActiveRecord::Migration[7.0]
+  def change
+    create_table :channel_instagram do |t|
+      t.string :access_token, null: false
+      t.datetime :expires_at, null: false
+      t.integer :account_id, null: false
+      t.string :instagram_id, null: false
+      t.timestamps
+    end
+
+    add_index :channel_instagram, :instagram_id, unique: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2025_03_15_202035) do
+ActiveRecord::Schema[7.0].define(version: 2025_03_26_034635) do
   # These extensions should be enabled to support this database
   enable_extension "pg_stat_statements"
   enable_extension "pg_trgm"
@@ -377,6 +377,16 @@ ActiveRecord::Schema[7.0].define(version: 2025_03_15_202035) do
     t.index ["page_id"], name: "index_channel_facebook_pages_on_page_id"
   end
 
+  create_table "channel_instagram", force: :cascade do |t|
+    t.string "access_token", null: false
+    t.datetime "expires_at", null: false
+    t.integer "account_id", null: false
+    t.string "instagram_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["instagram_id"], name: "index_channel_instagram_on_instagram_id", unique: true
+  end
+
   create_table "channel_line", force: :cascade do |t|
     t.integer "account_id", null: false
     t.string "line_channel_id", null: false

spec/factories/channel/channel_instagram.rb

@@ -0,0 +1,13 @@
+FactoryBot.define do
+  factory :channel_instagram, class: 'Channel::Instagram' do
+    account
+    access_token { SecureRandom.hex(32) }
+    instagram_id { SecureRandom.hex(16) }
+    expires_at { 60.days.from_now }
+    updated_at { 25.hours.ago }
+
+    after(:create) do |channel|
+      create(:inbox, channel: channel, account: channel.account)
+    end
+  end
+end

spec/models/channel/instagram_spec.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Channel::Instagram do
+  let(:channel) { create(:channel_instagram) }
+
+  it { is_expected.to validate_presence_of(:account_id) }
+  it { is_expected.to validate_presence_of(:access_token) }
+  it { is_expected.to validate_presence_of(:instagram_id) }
+  it { is_expected.to belong_to(:account) }
+  it { is_expected.to have_one(:inbox).dependent(:destroy_async) }
+
+  it 'has a valid name' do
+    expect(channel.name).to eq('Instagram')
+  end
+end