# frozen_string_literal: true

require 'rails_helper'

RSpec.describe 'Authentication', type: :request do
  let(:user) { create(:user, password: 'password123') }

  describe 'Route Protection' do
    it 'redirects to sign in page when accessing protected routes while signed out' do
      get map_v1_path
      expect(response).to redirect_to(new_user_session_path)
    end

    it 'allows access to protected routes when signed in' do
      sign_in user
      get map_path
      expect(response).to be_successful
    end
  end

  describe 'Account Management' do
    it 'prevents account update without current password' do
      sign_in user

      put user_registration_path, params: {
        user: {
          email: 'updated@example.com',
          current_password: ''
        }
      }

      expect(response).not_to be_successful
      expect(user.reload.email).not_to eq('updated@example.com')
    end

    it 'allows account update with current password' do
      sign_in user

      put user_registration_path, params: {
        user: {
          email: 'updated@example.com',
          current_password: 'password123'
        }
      }

      expect(response).to redirect_to(root_path)
      expect(user.reload.email).to eq('updated@example.com')
    end
  end

  describe 'Session Security' do
    it 'requires authentication after sign out' do
      sign_in user
      get map_path
      expect(response).to be_successful

      sign_out user
      get map_path
      expect(response).to redirect_to(new_user_session_path)
    end
  end

  describe 'Mobile iOS Authentication' do
    it 'redirects to iOS success path when signing in with iOS client header' do
      # Make a login request with the iOS client header (user NOT pre-signed in)
      post user_session_path, params: {
        user: { email: user.email, password: 'password123' }
      }, headers: {
        'X-Dawarich-Client' => 'ios',
        'Accept' => 'text/html'
      }

      # Should redirect to iOS success endpoint after successful login
      # The redirect will include a token parameter generated by after_sign_in_path_for
      expect(response).to redirect_to(%r{auth/ios/success\?token=})
      expect(response.location).to include('token=')
    end

    it 'stores iOS client header in session' do
      # Test that the header gets stored when accessing sign-in page
      get new_user_session_path, headers: { 'X-Dawarich-Client' => 'ios' }

      expect(session[:dawarich_client]).to eq('ios')
    end

    it 'redirects to iOS success path using stored session value' do
      # Simulate iOS app accessing sign-in page first (stores header in session)
      get new_user_session_path, headers: { 'X-Dawarich-Client' => 'ios' }

      # Then sign-in POST request without header (relies on session)
      post user_session_path, params: {
        user: { email: user.email, password: 'password123' }
      }, headers: {
        'Accept' => 'text/html'
      }

      # Should still redirect to iOS success endpoint using session value
      expect(response).to redirect_to(%r{auth/ios/success\?token=})
      expect(response.location).to include('token=')
    end

    it 'returns plain text response for iOS success endpoint with token' do
      # Generate a test JWT token using the same service as the controller
      payload = { api_key: user.api_key, exp: 5.minutes.from_now.to_i }
      test_token = Subscription::EncodeJwtToken.new(
        payload, ENV['AUTH_JWT_SECRET_KEY']
      ).call

      get ios_success_path, params: { token: test_token }

      expect(response).to be_successful
      expect(response.content_type).to include('text/plain')
      expect(response.body).to eq('Authentication successful! You can close this window.')
    end

    it 'returns JSON response when no token is provided to iOS success endpoint' do
      get ios_success_path

      expect(response).to be_successful
      expect(response.content_type).to include('application/json')

      json_response = JSON.parse(response.body)
      expect(json_response['success']).to be true
      expect(json_response['message']).to eq('iOS authentication successful')
      expect(json_response['redirect_url']).to eq(root_url)
    end

    it 'generates JWT token with correct payload for iOS authentication' do
      # Test JWT token generation directly using the same logic as after_sign_in_path_for
      payload = { api_key: user.api_key, exp: 5.minutes.from_now.to_i }

      # Create JWT token using the same service
      token = Subscription::EncodeJwtToken.new(
        payload, ENV['AUTH_JWT_SECRET_KEY']
      ).call

      expect(token).to be_present

      # Decode the token to verify the payload
      decoded_payload = JWT.decode(
        token,
        ENV['AUTH_JWT_SECRET_KEY'],
        true,
        { algorithm: 'HS256' }
      ).first

      expect(decoded_payload['api_key']).to eq(user.api_key)
      expect(decoded_payload['exp']).to be_present
    end

    it 'uses default path for non-iOS clients' do
      # Make a login request without iOS client header (user NOT pre-signed in)
      post user_session_path, params: {
        user: { email: user.email, password: 'password123' }
      }

      # Should redirect to default path (not iOS success)
      expect(response).not_to redirect_to(%r{auth/ios/success})
      expect(response.location).not_to include('auth/ios/success')
    end
  end

  describe 'Family Invitation with Authentication' do
    let(:family) { create(:family, creator: user) }
    let!(:membership) { create(:family_membership, user: user, family: family, role: :owner) }
    let(:invitee) { create(:user, email: 'invitee@example.com', password: 'password123') }
    let(:invitation) { create(:family_invitation, family: family, invited_by: user, email: invitee.email) }

    it 'redirects to invitation page when signing in with invitation token in params' do
      post user_session_path, params: {
        user: { email: invitee.email, password: 'password123' },
        invitation_token: invitation.token
      }

      expect(response).to redirect_to(family_invitation_path(invitation.token))
    end

    it 'redirects to invitation page when signing in with invitation token in session' do
      # The invitation token is stored in session by Users::SessionsController#load_invitation_context
      # when accessing the sign-in page with invitation_token param
      get new_user_session_path, params: { invitation_token: invitation.token }

      # Then sign in without the invitation_token in params (should use session value)
      post user_session_path, params: {
        user: { email: invitee.email, password: 'password123' }
      }

      expect(response).to redirect_to(family_invitation_path(invitation.token))
    end

    it 'prioritizes invitation over iOS flow when both are present' do
      # Sign in with both iOS header AND invitation token
      post user_session_path, params: {
        user: { email: invitee.email, password: 'password123' },
        invitation_token: invitation.token
      }, headers: {
        'X-Dawarich-Client' => 'ios'
      }

      # Should redirect to invitation page, NOT iOS success
      expect(response).to redirect_to(family_invitation_path(invitation.token))
      expect(response.location).not_to include('auth/ios/success')
    end

    it 'redirects to iOS success when invitation is expired' do
      # Create an expired invitation
      expired_invitation = create(:family_invitation,
                                   family: family,
                                   invited_by: user,
                                   email: invitee.email,
                                   expires_at: 1.day.ago)

      # Sign in with iOS header and expired invitation token
      post user_session_path, params: {
        user: { email: invitee.email, password: 'password123' },
        invitation_token: expired_invitation.token
      }, headers: {
        'X-Dawarich-Client' => 'ios'
      }

      # Should redirect to iOS success since invitation can't be accepted
      expect(response).to redirect_to(%r{auth/ios/success\?token=})
    end

    it 'uses default path when invitation token is invalid' do
      # Sign in with invalid invitation token
      post user_session_path, params: {
        user: { email: invitee.email, password: 'password123' },
        invitation_token: 'invalid-token-123'
      }

      # Should use default redirect path
      expect(response).not_to redirect_to(%r{/invitations/})
      expect(response).to redirect_to(root_path)
    end
  end
end