const { randomArrayValue } = require('./utils')

// basic types
const basicExtendsTypes = () => ({
  LOCAL_DATE_TIME: () => Math.floor(new Date().getTime() / 1000),
  USER_ROLE: (role) => role || randomArrayValue(['STUDENT', 'TEACHER']),
  BUILD_STATUS: (status) =>
    status ||
    randomArrayValue([
      'SUCCESS',
      'UNSTABLE',
      'FAILURE',
      'TIMEOUT',
      'WAITING',
      'RUNNING'
    ]),
  PROBLEM_TYPE: (problemType) =>
    problemType ||
    randomArrayValue([
      'JAVA',
      'JAVA_DATABASE',
      'PYTHON',
      'JAVA_COVERAGE',
      'PYTHON_COVERAGE',
      'JAVA_MUTATION'
    ]),
  EXAM_STATUS: (examStatus) =>
    examStatus ||
    randomArrayValue([
      'PREPARING',
      'UNAVAILABLE',
      'READY',
      'AVAILABLE',
      'FINISHED',
      'CLOSED'
    ])
})

// serializer type
const serializersPlugin = (mock) => ({
  USER_SERIALIZER: (role, id) =>
    mock({
      [isNaN(id) ? 'id|1-2000' : 'id']: isNaN(id) ? 1 : id,
      'score|90-100': 1,
      username: '@NAME',
      name: '@NAME',
      email: '@EMAIL',
      phone: '@PHONE',
      role: `@USER_ROLE(${role})`,
      createdAt: '@LOCAL_DATE_TIME'
    }),
  RESULT_SERIALIZER: (deleted) =>
    mock({
      'id|1-1000': 1,
      'score|90-100': 1,
      lastCommitAt: '@LOCAL_DATE_TIME',
      deleted: typeof deleted === 'boolean' ? deleted : '@BOOLEAN',
      exam: {
        'id|1-1000': 1,
        name: '@NAME',
        course: '南京大学软件工程第一期'
      },
      owner: {
        'id|1-1000': 1,
        username: '@NAME'
      },
      'commits|10-20': [
        {
          'id|1-1000': 1,
          finished: '@BOOLEAN',
          'score|90-100': 1,
          createdAt: '@LOCAL_DATE_TIME'
        }
      ]
    }),
  RECORD_SERIALIZER: (status) =>
    mock({
      'id|1-1000': 1,
      'number|1-1000': 1,
      status: `@BUILD_STATUS(${status})`,
      consoleOutput: '@PARAGRAPH(1)',
      'score|90-100': 1,
      commit: {
        'id|1-1000': 1,
        finished: '@BOOLEAN',
        'score|90-100': 1,
        createdAt: '@LOCAL_DATE_TIME'
      },
      'failures|10-20': [
        {
          name: '@TITLE',
          details: '@SENTENCE',
          trace: '@PARAGRAPH(1)'
        }
      ]
    }),
  PROBLEM_SERIALIZER: (type) =>
    mock({
      'id|1-1000': 1,
      name: '@NAME',
      type: `@PROBLEM_TYPE(${type})`,
      description: '@SENTENCE',
      'publicFiles|0-4': ['@URL'],
      'protectedFiles|0-4': ['@URL'],
      'privateFiles|0-4': ['@URL'],
      createdAt: '@LOCAL_DATE_TIME',
      modifiedAt: '@LOCAL_DATE_TIME',
      deprecated: '@BOOLEAN',
      creator: {
        'id|1-1000': 1,
        username: '@NAME'
      }
    }),
  PAGE_SERIALIZER: () => ({
    page: 1,
    limit: 20,
    size: 20,
    total: 100
  }),
  EXAM_SERIALIZER: (status) =>
    mock({
      'id|1-1000': 1,
      name: '@NAME',
      createdAt: '1578405025',
      startAt: '1578405025',
      endAt: '1588405025',
      url: '@URL',
      status: `@EXAM_STATUS(${status})`,
      creator: {
        'id|1-1000': 1,
        username: '@NAME'
      },
      joined: '@BOOLEAN',
      'courseId|1-1000': 1,
      courseName: '南京大学软件工程第一期'
    }),
  COURSE_SERIALIZER: () =>
    mock({
      'id|1-1000': 1,
      name: '南京大学软件工程第一期',
      code: '@ID'
    }),
  CODE_SERIALIZER: () =>
    mock({
      'examId|1-1000': 1,
      fetchAt: '@LOCAL_DATE_TIME',
      startAt: '@LOCAL_DATE_TIME',
      endAt: '@LOCAL_DATE_TIME',
      'codeList|10-100': [
        {
          'questionId|1-1000': 1,
          language: 'Java',
          projectName: '软工一作业',
          editable: {
            '/a/b/c.java': btoa(`class a{
              public void helloWorld1(){
              }
            }`),
            '/a/b/a.java': btoa(`class a{
              public void helloWorld2(){
              }
            }`),
            '/a/c/a.java': btoa(`class a{
              public void helloWorld3(){
              }
            }`),
            '/a/b/d.java': btoa(`class a{
              public void helloWorld4(){
              }
            }`)
          },
          uneditable: {
            '/README.md': btoa('')
          }
        }
      ]
    }),
  COMMIT_SERIALIZER: () =>
    mock({
      'id|1-1000': 1,
      hash: '@STRING(50)',
      finished: '@BOOLEAN',
      'score|70-100': 1,
      createdAt: '@LOCAL_DATE_TIME',
      result: {
        'id|1-1000': 1,
        'score|70-100': 1,
        exam: {
          'id|1-1000': 1,
          name: '@SENTENCE'
        },
        owner: {
          'id|1-1000': 1,
          username: '@NAME'
        }
      },
      'records|10': [
        {
          'id|1-1000': 1,
          status: '@BUILD_STATUS',
          'score|70-100': 1,
          problem: {
            'id|1-1000': 1,
            name: '@SENTENCE'
          }
        }
      ]
    })
})
function btoa(str) {
  if (Buffer.byteLength(str) !== str.length) throw new Error('bad string!')
  return Buffer.from(str, 'binary').toString('base64')
}
module.exports = function(random, mock) {
  random.extend(basicExtendsTypes())
  random.extend(serializersPlugin(mock))
}