Merge pull request #1975 from AntaresSimulatorTeam/bugfix/weekly-date…

…-formatting

fix(ui-results): correct weekly data formatting to support 53-week years

webapp/src/components/App/Singlestudy/explore/Results/ResultDetails/index.tsx

@@ -160,19 +160,23 @@ function ResultDetails() {
       return ["Annual"];
     }
 
+    // Directly use API's week index (handles 53 weeks) as no formatting is required.
+    // !NOTE: Suboptimal: Assumes API consistency, lacks flexibility.
+    if (timestep === Timestep.Weekly) {
+      return matrixRes.data.index.map((weekNumber) => weekNumber.toString());
+    }
+
     // Original date/time format mapping for moment parsing
     const parseFormat = {
       [Timestep.Hourly]: "MM/DD HH:mm",
       [Timestep.Daily]: "MM/DD",
-      [Timestep.Weekly]: "WW",
       [Timestep.Monthly]: "MM",
     }[timestep];
 
     // Output formats for each timestep to match legacy UI requirements
     const outputFormat = {
       [Timestep.Hourly]: "DD MMM HH:mm  I",
       [Timestep.Daily]: "DD MMM  I",
-      [Timestep.Weekly]: "WW",
       [Timestep.Monthly]: "MMM",
     }[timestep];