#2033 - Validating FT and PT offering minimum length

sources/packages/backend/apps/api/src/services/education-program-offering/custom-validators/has-valid-offering-period-for-funded-days.ts

@@ -5,10 +5,7 @@ import {
   ValidationOptions,
   ValidationArguments,
 } from "class-validator";
-import {
-  OFFERING_STUDY_PERIOD_MAX_DAYS,
-  OFFERING_STUDY_PERIOD_MIN_DAYS,
-} from "../../../utilities";
+import { OFFERING_STUDY_PERIOD_MAX_DAYS } from "../../../utilities";
 import { StudyBreak } from "../education-program-offering-validation.models";
 import { OfferingCalculationValidationBaseConstraint } from "./offering-calculation-validation-base-constraint";
 
@@ -23,20 +20,32 @@ class HasValidOfferingPeriodForFundedDaysConstraint
   implements ValidatorConstraintInterface
 {
   validate(studyBreaks: StudyBreak[], args: ValidationArguments): boolean {
+    const offeringMinDaysAllowedValue = this.getOfferingMinAllowedDays(args);
     const calculatedStudyBreaksAndWeeks = this.getCalculatedStudyBreaks(
       studyBreaks,
       args,
     );
     return (
       calculatedStudyBreaksAndWeeks.fundedStudyPeriodDays >=
-        OFFERING_STUDY_PERIOD_MIN_DAYS &&
+        offeringMinDaysAllowedValue &&
       calculatedStudyBreaksAndWeeks.fundedStudyPeriodDays <=
         OFFERING_STUDY_PERIOD_MAX_DAYS
     );
   }
 
-  defaultMessage() {
-    return `The funded study amount of days is ineligible for StudentAid BC funding. Your dates must be between ${OFFERING_STUDY_PERIOD_MIN_DAYS} to ${OFFERING_STUDY_PERIOD_MAX_DAYS} days.`;
+  defaultMessage(args: ValidationArguments) {
+    const offeringMinDaysAllowedValue = this.getOfferingMinAllowedDays(args);
+    return `The funded study amount of days is ineligible for StudentAid BC funding. Your dates must be between ${offeringMinDaysAllowedValue} to ${OFFERING_STUDY_PERIOD_MAX_DAYS} days.`;
+  }
+
+  /**
+   * Get offering minimum allowed days from args.
+   * @param args validation arguments.
+   * @returns minimum allowed days.
+   */
+  private getOfferingMinAllowedDays(args: ValidationArguments): number {
+    const [, , offeringMinDaysAllowed] = args.constraints;
+    return offeringMinDaysAllowed(args.object) as number;
   }
 }
 
@@ -46,12 +55,14 @@ class HasValidOfferingPeriodForFundedDaysConstraint
  * allowed study period amount of days.
  * @param startPeriodProperty property of the model that identifies the offering start date.
  * @param endPeriodProperty property of the model that identifies the offering end date.
+ * @param offeringMinDaysAllowed study period minimum length in number of days.
  * @param validationOptions validations options.
  * @returns true if the study period is valid, otherwise, false.
  */
 export function HasValidOfferingPeriodForFundedDays(
   startPeriodProperty: (targetObject: unknown) => Date | string,
   endPeriodProperty: (targetObject: unknown) => Date | string,
+  offeringMinDaysAllowed: (targetObject: unknown) => number,
   validationOptions?: ValidationOptions,
 ) {
   return (object: unknown, propertyName: string) => {
@@ -60,7 +71,11 @@ export function HasValidOfferingPeriodForFundedDays(
       target: object.constructor,
       propertyName,
       options: validationOptions,
-      constraints: [startPeriodProperty, endPeriodProperty],
+      constraints: [
+        startPeriodProperty,
+        endPeriodProperty,
+        offeringMinDaysAllowed,
+      ],
       validator: HasValidOfferingPeriodForFundedDaysConstraint,
     });
   };

sources/packages/backend/apps/api/src/services/education-program-offering/education-program-offering-validation.models.ts

@@ -46,7 +46,8 @@ import {
   OFFERING_STUDY_BREAK_MAX_DAYS,
   OFFERING_STUDY_BREAK_MIN_DAYS,
   OFFERING_STUDY_PERIOD_MAX_DAYS,
-  OFFERING_STUDY_PERIOD_MIN_DAYS,
+  OFFERING_STUDY_PERIOD_MIN_DAYS_FULL_TIME,
+  OFFERING_STUDY_PERIOD_MIN_DAYS_PART_TIME,
   OFFERING_YEAR_OF_STUDY_MAX_VALUE,
   OFFERING_YEAR_OF_STUDY_MIN_VALUE,
 } from "../../utilities";
@@ -319,6 +320,18 @@ const studyStartDateProperty = (offering: OfferingValidationModel) =>
 const studyEndDateProperty = (offering: OfferingValidationModel) =>
   offering.studyEndDate;
 
+/**
+ * Get study period minimum length based on offering intensity.
+ * @param offering offering.
+ * @returns minimum study period length in number of days.
+ */
+const studyPeriodMinLength = (offering: OfferingValidationModel) => {
+  if (offering.offeringIntensity === OfferingIntensity.fullTime) {
+    return OFFERING_STUDY_PERIOD_MIN_DAYS_FULL_TIME;
+  }
+  return OFFERING_STUDY_PERIOD_MIN_DAYS_PART_TIME;
+};
+
 /**
  * Complete offering data with all validations needed to ensure data
  * consistency. Program data and locations data need to be present to
@@ -353,7 +366,7 @@ export class OfferingValidationModel {
   @IsDateAfter(studyStartDateProperty, userFriendlyNames.studyEndDate)
   @PeriodMinLength(
     studyStartDateProperty,
-    OFFERING_STUDY_PERIOD_MIN_DAYS,
+    studyPeriodMinLength,
     userFriendlyNames.studyEndDate,
     {
       context: ValidationContext.CreateWarning(
@@ -595,6 +608,7 @@ export class OfferingValidationModel {
   @HasValidOfferingPeriodForFundedDays(
     studyStartDateProperty,
     studyEndDateProperty,
+    studyPeriodMinLength,
     {
       context: ValidationContext.CreateWarning(
         OfferingValidationWarnings.InvalidStudyDatesPeriodLength,

sources/packages/backend/apps/api/src/utilities/class-validation/custom-validators/period-min-length.ts

@@ -15,23 +15,38 @@ import { dateDifference, getDateOnlyFormat } from "@sims/utilities";
 @ValidatorConstraint()
 class PeriodMinLengthConstraint implements ValidatorConstraintInterface {
   validate(value: Date | string, args: ValidationArguments): boolean {
-    const [startDateProperty, minDaysAllowed] = args.constraints;
+    const [startDateProperty] = args.constraints;
+    const minDaysAllowedValue = this.getMinAllowedDays(args);
     const periodStartDate = startDateProperty(args.object);
     if (!periodStartDate) {
       // The related property does not exists in the provided object to be compared.
       return false;
     }
-    return dateDifference(value, periodStartDate) >= minDaysAllowed;
+    return dateDifference(value, periodStartDate) >= minDaysAllowedValue;
   }
 
   defaultMessage(args: ValidationArguments) {
-    const [startDateProperty, minDaysAllowed, propertyDisplayName] =
-      args.constraints;
+    const [startDateProperty, , propertyDisplayName] = args.constraints;
     const startDate = getDateOnlyFormat(startDateProperty(args.object));
     const endDate = getDateOnlyFormat(args.value);
+    const minDaysAllowedValue = this.getMinAllowedDays(args);
     return `${
       propertyDisplayName ?? args.property
-    }, the number of day(s) between ${startDate} and ${endDate} must be at least ${minDaysAllowed}.`;
+    }, the number of day(s) between ${startDate} and ${endDate} must be at least ${minDaysAllowedValue}.`;
+  }
+
+  /**
+   * Get minimum allowed days from args.
+   * @param args validation arguments.
+   * @returns minimum allowed days.
+   */
+  private getMinAllowedDays(args: ValidationArguments): number {
+    const [, minDaysAllowed] = args.constraints;
+    const minDaysAllowedValue =
+      minDaysAllowed instanceof Function
+        ? (minDaysAllowed(args.object) as number)
+        : minDaysAllowed;
+    return minDaysAllowedValue as number;
   }
 }
 
@@ -42,14 +57,15 @@ class PeriodMinLengthConstraint implements ValidatorConstraintInterface {
  * @param startDateProperty indicates the property that define the
  * start of a period.
  * @param minDaysAllowed min allowed days to the period be considered valid.
+ * This could be a number or a function that returns a value of minimum allowed days.
  * @param propertyDisplayName user-friendly property name to be added to the
  * validation message.
  * @param validationOptions validations options.
  * @returns true if the period amount of days is inside the min allowed days.
  */
 export function PeriodMinLength(
   startDateProperty: (targetObject: unknown) => Date | string,
-  minDaysAllowed: number,
+  minDaysAllowed: ((targetObject: unknown) => number) | number,
   propertyDisplayName?: string,
   validationOptions?: ValidationOptions,
 ) {

sources/packages/backend/apps/api/src/utilities/system-configurations-constants.ts

@@ -60,9 +60,15 @@ export const OFFERING_COURSE_LOAD_MIN_VALUE = 20;
  */
 export const OFFERING_COURSE_LOAD_MAX_VALUE = 59;
 /**
- * Minimum amount of days to an offering study period.
+ * Minimum amount of days required for a full time offering study period.
  */
-export const OFFERING_STUDY_PERIOD_MIN_DAYS = 42;
+export const OFFERING_STUDY_PERIOD_MIN_DAYS_FULL_TIME = 84;
+
+/**
+ * Minimum amount of days required for a part time offering study period.
+ */
+export const OFFERING_STUDY_PERIOD_MIN_DAYS_PART_TIME = 42;
+
 /**
  * Maximum amount of days to an offering study period.
  */