function validateValueBySchema()

in src/core/utils.js [416:595]
160 lines of code
83 McCabe index (conditional complexity)

function validateValueBySchema(value, schema, requiredByParam, bypassRequiredCheck, parameterContentMediaType) {
  if(!schema) return []
  let errors = []
  let nullable = schema.get("nullable")
  let requiredBySchema = schema.get("required")
  let maximum = schema.get("maximum")
  let minimum = schema.get("minimum")
  let type = schema.get("type")
  let format = schema.get("format")
  let maxLength = schema.get("maxLength")
  let minLength = schema.get("minLength")
  let uniqueItems = schema.get("uniqueItems")
  let maxItems = schema.get("maxItems")
  let minItems = schema.get("minItems")
  let pattern = schema.get("pattern")

  const schemaRequiresValue = requiredByParam || requiredBySchema === true
  const hasValue = value !== undefined && value !== null
  const isValidEmpty = !schemaRequiresValue && !hasValue

  const needsExplicitConstraintValidation = hasValue && type === "array"

  const requiresFurtherValidation =
    schemaRequiresValue
    || needsExplicitConstraintValidation
    || !isValidEmpty

  const isValidNullable = nullable && value === null

  // will not be included in the request or [schema / value] does not [allow / require] further analysis.
  const noFurtherValidationNeeded =
    isValidNullable
    || !type
    || !requiresFurtherValidation

  if(noFurtherValidationNeeded) {
    return []
  }

  // Further this point the parameter is considered worth to validate
  let stringCheck = type === "string" && value
  let arrayCheck = type === "array" && Array.isArray(value) && value.length
  let arrayListCheck = type === "array" && Im.List.isList(value) && value.count()
  let arrayStringCheck = type === "array" && typeof value === "string" && value
  let fileCheck = type === "file" && value instanceof win.File
  let booleanCheck = type === "boolean" && (value || value === false)
  let numberCheck = type === "number" && (value || value === 0)
  let integerCheck = type === "integer" && (value || value === 0)
  let objectCheck = type === "object" && typeof value === "object" && value !== null
  let objectStringCheck = type === "object" && typeof value === "string" && value

  const allChecks = [
    stringCheck, arrayCheck, arrayListCheck, arrayStringCheck, fileCheck,
    booleanCheck, numberCheck, integerCheck, objectCheck, objectStringCheck,
  ]

  const passedAnyCheck = allChecks.some(v => !!v)

  if (schemaRequiresValue && !passedAnyCheck && !bypassRequiredCheck) {
    errors.push("Required field is not provided")
    return errors
  }
  if (
    type === "object" &&
    (parameterContentMediaType === null ||
      parameterContentMediaType === "application/json")
  ) {
    let objectVal = value
    if(typeof value === "string") {
      try {
        objectVal = JSON.parse(value)
      } catch (e) {
        errors.push("Parameter string value must be valid JSON")
        return errors
      }
    }
    if(schema && schema.has("required") && isFunc(requiredBySchema.isList) && requiredBySchema.isList()) {
      requiredBySchema.forEach(key => {
        if(objectVal[key] === undefined) {
          errors.push({ propKey: key, error: "Required property not found" })
        }
      })
    }
    if(schema && schema.has("properties")) {
      schema.get("properties").forEach((val, key) => {
        const errs = validateValueBySchema(objectVal[key], val, false, bypassRequiredCheck, parameterContentMediaType)
        errors.push(...errs
          .map((error) => ({ propKey: key, error })))
      })
    }
  }

  if (pattern) {
    let err = validatePattern(value, pattern)
    if (err) errors.push(err)
  }

  if (minItems) {
    if (type === "array") {
      let err = validateMinItems(value, minItems)
      if (err) errors.push(err)
    }
  }

  if (maxItems) {
    if (type === "array") {
      let err = validateMaxItems(value, maxItems)
      if (err) errors.push({ needRemove: true, error: err })
    }
  }

  if (uniqueItems) {
    if (type === "array") {
      let errorPerItem = validateUniqueItems(value, uniqueItems)
      if (errorPerItem) errors.push(...errorPerItem)
    }
  }

  if (maxLength || maxLength === 0) {
    let err = validateMaxLength(value, maxLength)
    if (err) errors.push(err)
  }

  if (minLength) {
    let err = validateMinLength(value, minLength)
    if (err) errors.push(err)
  }

  if (maximum || maximum === 0) {
    let err = validateMaximum(value, maximum)
    if (err) errors.push(err)
  }

  if (minimum || minimum === 0) {
    let err = validateMinimum(value, minimum)
    if (err) errors.push(err)
  }

  if (type === "string") {
    let err
    if (format === "date-time") {
      err = validateDateTime(value)
    } else if (format === "uuid") {
      err = validateGuid(value)
    } else {
      err = validateString(value)
    }
    if (!err) return errors
    errors.push(err)
  } else if (type === "boolean") {
    let err = validateBoolean(value)
    if (!err) return errors
    errors.push(err)
  } else if (type === "number") {
    let err = validateNumber(value)
    if (!err) return errors
    errors.push(err)
  } else if (type === "integer") {
    let err = validateInteger(value)
    if (!err) return errors
    errors.push(err)
  } else if (type === "array") {
    if (!(arrayCheck || arrayListCheck)) {
      return errors
    }
    if(value) {
      value.forEach((item, i) => {
        const errs = validateValueBySchema(item, schema.get("items"), false, bypassRequiredCheck, parameterContentMediaType)
        errors.push(...errs
          .map((err) => ({ index: i, error: err })))
      })
    }
  } else if (type === "file") {
    let err = validateFile(value)
    if (!err) return errors
    errors.push(err)
  }

  return errors
}