Learning Joi

playing-with-joi.js

const Joi = require("joi");
const nanoid = require("nanoid");

const value = {
  documents: [
    {
      type: "PAN_CARD",
      number: nanoid(10),
      expire_date: "2018-11-16T18:46:19-0700",
      proof_for: "PROOF_OF_IDENTITY",
      files: [
        {
          name: nanoid(),
          page: "1",
          type: "image/jpeg",
          size: "612793",
          width: "300",
          height: "500"
        }
      ]
    }
  ]
};

const documentTypesEnum = [
  "PAN_CARD",
  "AADHAAR_CARD",
  "DRIVING_LICENSE",
  "PASSPORT",
  "VOTOR_ID"
];

const proofForEnum = [
  "PROOF_OF_IDENTITY",
  "PROOF_OF_ADDRESS",
  "PROOF_OF_CANCELLED_CHEQUE",
  "PROOF_OF_SIGNATURE",
  "PROOF_OF_SELF_RECORDED_VIDEO"
];

const fileTypeEnum = [
  "image/jpeg",
  "image/png",
  "video/mp4",
  "video/ogg",
  "video/webm"
];

const filesSchema = Joi.object().keys({
  name: Joi.string()
    .length(21)
    .required(),
  type: Joi.string()
    .valid(fileTypeEnum)
    .required(),
  size: Joi.string().required(),
  width: Joi.string().required(),
  height: Joi.string().required()
});

const itemsSchema = Joi.object().keys({
  type: Joi.string()
    .valid(documentTypesEnum)
    .required(),
  number: Joi.string()
    .when("type", {
      is: "PASSPORT",
      then: Joi.string()
        .length(7)
        .required()
    })
    .when("type", {
      is: "PAN_CARD",
      then: Joi.string()
        .length(10)
        .required()
    })
    .when("type", {
      is: "VOTOR_ID",
      then: Joi.string()
        .length(11)
        .required()
    })
    .when("type", {
      is: "AADHAAR_CARD",
      then: Joi.string()
        .length(12)
        .required()
    })
    .when("type", {
      is: "DRIVING_LICENSE",
      then: Joi.string()
        .length(13)
        .required()
    })
    .required(),
  expire_date: Joi.string()
    .isoDate()
    .required(),
  proof_for: Joi.string()
    .valid(proofForEnum)
    .optional(),
  files: Joi.array()
    .items(filesSchema)
    .when("type", {
      is: ["AADHAAR_CARD", "VOTOR_ID", "PASSPORT"],
      then: Joi.array().min(2)
    })
    .required()
});

const documentSchema = Joi.object().keys({
  documents: Joi.array()
    .items(itemsSchema)
    .required()
});

const options = {
  abortEarly: false,
  convert: false,
  escapeHtml: true,
  stripUnknown: true
};

Joi.validate(value, documentSchema, options, (err, value) => {
  if (err) {
    console.log("err", err);
  } else {
    console.log("document is valid");
  }
});