<?php

namespace Tests\Unit;

use App\Controllers\EmployeeRestController;
use App\Models\ClientPolicyModel;
use App\Models\ReminderMailConfigModel;
use CodeIgniter\Test\CIUnitTestCase;
use Config\Services;
use Tests\Support\Traits\ReminderMailControllerTestTrait;

class SendReminderMailTest extends CIUnitTestCase
{
    use ReminderMailControllerTestTrait;

    private function mockReminderMailConfigModel(array $methods): ReminderMailConfigModel
    {
        return $this->getMockBuilder(ReminderMailConfigModel::class)
            ->onlyMethods(array_keys($methods))
            ->getMock();
    }

    public function testNonPostRequestReturns405()
    {
        $controller = $this->buildJsonPostController(
            ['client_policy_id' => 123],
            $this->createMock(ClientPolicyModel::class),
            $this->mockReminderMailConfigModel([]),
            false
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertFalse($body['status']);
        $this->assertSame(405, $body['code']);
        $this->assertSame('Only POST method is allowed', $body['message']);
    }

    public function testEmptyJsonBodyReturns400()
    {
        $controller = $this->buildJsonPostController(
            [],
            $this->createMock(ClientPolicyModel::class),
            $this->mockReminderMailConfigModel([])
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertFalse($body['status']);
        $this->assertSame(400, $body['code']);
        $this->assertSame('JSON request body is required', $body['message']);
    }

    public function testMissingClientPolicyIdReturns400()
    {
        $controller = $this->buildJsonPostController(
            ['email_subject' => 'Reminder'],
            $this->createMock(ClientPolicyModel::class),
            $this->mockReminderMailConfigModel([])
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertFalse($body['status']);
        $this->assertSame(400, $body['code']);
        $this->assertSame('client_policy_id is required', $body['message']);
    }

    public function testClientPolicyNotFoundReturns404()
    {
        $clientPolicyModel = $this->createMock(ClientPolicyModel::class);
        $clientPolicyModel->method('find')->with(123)->willReturn(null);

        $controller = $this->buildJsonPostController(
            ['client_policy_id' => 123],
            $clientPolicyModel,
            $this->mockReminderMailConfigModel([])
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertFalse($body['status']);
        $this->assertSame(404, $body['code']);
        $this->assertSame('Client policy not found', $body['message']);
    }

    public function testSavesEmailTemplateBeforeSendingMail()
    {
        $clientPolicyModel = $this->createMock(ClientPolicyModel::class);
        $clientPolicyModel->method('find')->with(123)->willReturn([
            'id'               => 123,
            'client_id'        => 42,
            'client_branch_id' => 7,
        ]);

        $reminderMailConfigModel = $this->mockReminderMailConfigModel(['saveEmailTemplate' => null]);
        $reminderMailConfigModel->expects($this->once())
            ->method('saveEmailTemplate')
            ->with(
                123,
                'Enrollment reminder',
                '<p>Hi [[member_name]]</p>',
                45
            );

        $controller = $this->getMockBuilder(EmployeeRestController::class)
            ->onlyMethods(['dispatchManualReminder'])
            ->getMock();
        $controller->expects($this->once())
            ->method('dispatchManualReminder')
            ->with(42, 7, 123)
            ->willReturn(
                Services::response()->setJSON([
                    'status'  => true,
                    'code'    => 200,
                    'message' => 'Mail sent successfully',
                ])->setStatusCode(200)
            );

        $controller = $this->buildJsonPostController(
            [
                'client_policy_id' => 123,
                'email_subject'    => 'Enrollment reminder',
                'email_body'       => '<p>Hi [[member_name]]</p>',
                'hr_id'            => 45,
            ],
            $clientPolicyModel,
            $reminderMailConfigModel,
            true,
            null,
            $controller
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertTrue($body['status']);
        $this->assertSame(200, $body['code']);
        $this->assertSame('Mail sent successfully', $body['message']);
    }

    public function testSkipsTemplateSaveWhenEmailFieldsNotProvided()
    {
        $clientPolicyModel = $this->createMock(ClientPolicyModel::class);
        $clientPolicyModel->method('find')->with(123)->willReturn([
            'id'               => 123,
            'client_id'        => 42,
            'client_branch_id' => 7,
        ]);

        $reminderMailConfigModel = $this->mockReminderMailConfigModel(['saveEmailTemplate' => null]);
        $reminderMailConfigModel->expects($this->never())->method('saveEmailTemplate');

        $controller = $this->getMockBuilder(EmployeeRestController::class)
            ->onlyMethods(['dispatchManualReminder'])
            ->getMock();
        $controller->expects($this->once())
            ->method('dispatchManualReminder')
            ->with(42, 7, 123)
            ->willReturn(
                Services::response()->setJSON([
                    'status'  => false,
                    'code'    => 200,
                    'message' => 'There is no data to send',
                ])->setStatusCode(200)
            );

        $controller = $this->buildJsonPostController(
            ['client_policy_id' => 123],
            $clientPolicyModel,
            $reminderMailConfigModel,
            true,
            null,
            $controller
        );

        $body = $this->decodeResponse($controller->sendReminderMail());

        $this->assertFalse($body['status']);
        $this->assertSame('There is no data to send', $body['message']);
    }
}