feat: add pagination to srm schedule

Author: eisbilir

src/common/srm-helper.js

@@ -48,8 +48,21 @@ const PracticeProblemsKeyMappings = _.reduce(
  * @param {Array<String>} filter.statuses the statues
  * @param {Date} filter.registrationStartTimeAfter the start of the registration time
  * @param {Date=} filter.registrationStartTimeBefore the end of the registration time
+ * @param {String} filter.sortBy the sort field
+ * @param {String} filter.sortOrder the sort order
+ * @param {Number} filter.page the sort order
+ * @param {Number} filter.perPage the sort order
  */
 function getSRMScheduleQuery(filter) {
+  const offset = (filter.page - 1) * filter.perPage;
+  let sortBy = filter.sortBy;
+  if (criteria.sortBy === "registrationStartTime") {
+    sortBy = "reg.start_time";
+  } else if (criteria.sortBy === "codingStartTime") {
+    sortBy = "coding.start_time";
+  } else if (criteria.sortBy === "challengeStartTime") {
+    sortBy = "challenge.start_time";
+  }
   const statuses = _.join(
     _.map(filter.statuses, (s) => `'${_.toUpper(s)}'`),
     ","
@@ -64,8 +77,9 @@ function getSRMScheduleQuery(filter) {
       : ""
   }`;
 
-  const query = `SELECT 
-  FIRST 50
+  const query = `SELECT
+  SKIP ${offset}
+  FIRST ${filter.perPage}
   r.round_id AS roundId
   , r.name AS name
   , r.short_name AS shortName
@@ -95,8 +109,7 @@ function getSRMScheduleQuery(filter) {
   r.round_type_id in (1,2,10) AND
   UPPER(r.status) in (${statuses}) AND 
   ${registrationTimeFilter}
-  ORDER BY 
-  reg.start_time DESC`;
+  ORDER BY ${sortBy} ${filter.sortOrder}`;
   return query;
 }
 

src/services/ChallengeService.js

@@ -2481,6 +2481,12 @@ getSRMSchedule.schema = {
     statuses: Joi.array()
       .items(Joi.string().valid(["A", "F", "P"]))
       .default(["A", "F", "P"]),
+    sortBy: Joi.string()
+      .valid(["registrationStartTime", "codingStartTime", "challengeStartTime"])
+      .default("registrationStartTime"),
+    sortOrder: Joi.string().valid(["asc", "desc"]).default("asc"),
+    page: Joi.page(),
+    perPage: Joi.perPage(),
   }),
 };
 
@@ -2494,7 +2500,7 @@ async function getPracticeProblems(currentUser, criteria = {}) {
   const { query, countQuery } = getPracticeProblemsQuery(criteria);
   const resultOutput = await aclQueryDomain.rawQuery({ sql: query });
   const countOutput = await aclQueryDomain.rawQuery({ sql: countQuery });
-  const result = convertPracticeProblemsQueryOutput(resultQueryOutput);
+  const result = convertPracticeProblemsQueryOutput(resultOutput);
   const total = countOutput.rows[0].fields[0].value;
   return { total, page: criteria.page, perPage: criteria.perPage, result };
 }