<?php

test('extracts simple environment variables from docker-compose', function () {
    $yaml = <<<'YAML'
services:
  app:
    image: nginx
    environment:
      - NODE_ENV=production
      - PORT=3000
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toHaveCount(2)
        ->and($result[0]['key'])->toBe('NODE_ENV')
        ->and($result[0]['value'])->toBe('production')
        ->and($result[0]['service_name'])->toBe('app')
        ->and($result[1]['key'])->toBe('PORT')
        ->and($result[1]['value'])->toBe('3000')
        ->and($result[1]['service_name'])->toBe('app');
});

test('extracts environment variables with inline comments', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      - NODE_ENV=production  # Production environment
      - DEBUG=false  # Disable debug mode
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toHaveCount(2)
        ->and($result[0]['comment'])->toBe('Production environment')
        ->and($result[1]['comment'])->toBe('Disable debug mode');
});

test('handles multiple services', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      - APP_ENV=prod
  db:
    environment:
      - POSTGRES_DB=mydb
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toHaveCount(2)
        ->and($result[0]['key'])->toBe('APP_ENV')
        ->and($result[0]['service_name'])->toBe('app')
        ->and($result[1]['key'])->toBe('POSTGRES_DB')
        ->and($result[1]['service_name'])->toBe('db');
});

test('handles associative array format', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      NODE_ENV: production
      PORT: 3000
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toHaveCount(2)
        ->and($result[0]['key'])->toBe('NODE_ENV')
        ->and($result[0]['value'])->toBe('production')
        ->and($result[1]['key'])->toBe('PORT')
        ->and($result[1]['value'])->toBe(3000); // Integer values stay as integers from YAML
});

test('handles environment variables without values', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      - API_KEY
      - DEBUG=false
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toHaveCount(2)
        ->and($result[0]['key'])->toBe('API_KEY')
        ->and($result[0]['value'])->toBe('') // Variables without values get empty string, not null
        ->and($result[1]['key'])->toBe('DEBUG')
        ->and($result[1]['value'])->toBe('false');
});

test('distinguishes passthrough variables from explicit empty values', function () {
    $yaml = <<<'YAML'
services:
  list-app:
    environment:
      - PASSTHROUGH
      - EMPTY=
  map-app:
    environment:
      MAPPED_PASSTHROUGH:
      MAPPED_EMPTY: ""
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml)->keyBy('key');

    expect($result['PASSTHROUGH']['is_passthrough'])->toBeTrue()
        ->and($result['EMPTY']['is_passthrough'])->toBeFalse()
        ->and($result['MAPPED_PASSTHROUGH']['is_passthrough'])->toBeTrue()
        ->and($result['MAPPED_EMPTY']['is_passthrough'])->toBeFalse();
});

test('detects Compose inputs that must remain unset when blank', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      BARE:
      DASH: ${DASH-default}
      QUESTION: ${QUESTION?required}
      COLON_DASH: ${COLON_DASH:-default}
      ESCAPED: $${ESCAPED-nope}
YAML;

    expect(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'BARE', null))->toBeTrue()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'DASH', null))->toBeTrue()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'QUESTION', null))->toBeTrue()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'COLON_DASH', null))->toBeTrue()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'ESCAPED', null))->toBeFalse()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'DASH', ''))->toBeFalse()
        ->and(dockerComposeEnvironmentVariableShouldBeUnset($yaml, 'COLON_DASH', 'debug'))->toBeFalse();
});

test('extracts fallback and required metadata from derived Compose values', function () {
    $compose = <<<'YAML'
services:
  app:
    environment:
      URL: https://${HOST:-${INNER_HOST:-localhost}/api}
      PATH: ${TOKEN?TOKEN is required}/v1
YAML;

    expect(dockerComposeEnvironmentVariableInfo($compose, 'HOST'))->toMatchArray([
        'services' => ['app'],
        'default' => '${INNER_HOST:-localhost}/api',
        'operator' => ':-',
        'required' => false,
    ])->and(dockerComposeEnvironmentVariableInfo($compose, 'TOKEN'))->toMatchArray([
        'services' => ['app'],
        'default' => null,
        'operator' => '?',
        'required' => true,
    ]);
});

test('returns empty collection for malformed YAML', function () {
    $yaml = 'invalid: yaml: content::: [[[';

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toBeEmpty();
});

test('returns empty collection for empty compose file', function () {
    $result = extractHardcodedEnvironmentVariables('');

    expect($result)->toBeEmpty();
});

test('returns empty collection when no services defined', function () {
    $yaml = <<<'YAML'
version: '3.8'
networks:
  default:
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toBeEmpty();
});

test('returns empty collection when service has no environment section', function () {
    $yaml = <<<'YAML'
services:
  app:
    image: nginx
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    expect($result)->toBeEmpty();
});

test('handles mixed associative and array format', function () {
    $yaml = <<<'YAML'
services:
  app:
    environment:
      - NODE_ENV=production
      PORT: 3000
YAML;

    $result = extractHardcodedEnvironmentVariables($yaml);

    // Mixed format is invalid YAML and returns empty collection
    expect($result)->toBeEmpty();
});