warn if ELO ordering of players does not match FFE rules of >100 gap

src/app/[locale]/(main)/match/MatchForm.tsx

@@ -11,12 +11,15 @@ import TeamSelection from "@/app/[locale]/(main)/match/components/TeamSelection"
 import { Button } from "@/components/Button";
 import InfoMessage, { InfoMessageType } from "@/components/InfoMessage";
 import { TextField } from "@/components/form/TextField";
+import { Player } from "@/interfaces";
 import { matchSchema } from "@/schemas";
 import { generateFeuilleDeMatch } from "@/server/generateFeuilleDeMatch";
 import { Club } from "@/types";
 
 export type MatchFormValues = z.infer<typeof matchSchema>;
 
+type BoardPlayer = Partial<Pick<Player, "elo" | "name" | "nrFFE">>;
+
 interface IProps {
   clubs: Club[];
 }
@@ -31,8 +34,43 @@ const MatchForm = ({ clubs }: IProps) => {
     resolver: zodResolver(matchSchema),
   });
 
+  // check 100 point ELO rule
+  const checkPlayerOrder = (
+    team1Players: BoardPlayer[],
+    team2Players: BoardPlayer[],
+  ) => {
+    function checkOrder(elos: number[]) {
+      for (let i = 0; i < elos.length - 1; i++) {
+        if (elos[i] < elos[i + 1]) {
+          if (elos[i + 1] - elos[i] > 100) {
+            return false;
+          }
+        }
+      }
+      return true;
+    }
+
+    const team1Elos = team1Players
+      .filter((player) => player.elo !== "")
+      .map((player) => Number(player.elo?.split(" ")[0]));
+
+    const team2Elos = team2Players
+      .filter((player) => player.elo !== "")
+      .map((player) => Number(player.elo?.split(" ")[0]));
+
+    return !(!checkOrder(team1Elos) || !checkOrder(team2Elos));
+  };
+
   const onSubmit = async (data: MatchFormValues) => {
     try {
+      if (!checkPlayerOrder(data.team1_players, data.team2_players)) {
+        const confirmResult = confirm(
+          "ELO ordering is not correct, please check your players.\nClick 'OK' to continue or 'Cancel' to abort.",
+        );
+
+        if (!confirmResult) return false;
+      }
+
       const result = await generateFeuilleDeMatch(data);
 
       if (result?.data?.pdfBase64) {
@@ -54,11 +92,18 @@ const MatchForm = ({ clubs }: IProps) => {
     } catch (err: unknown) {
       console.log(err);
 
+      if (err instanceof Error) {
+        setResponseMessage({
+          type: "error",
+          message: err.message,
+        });
+      } else {
         setResponseMessage({
           type: "error",
           message: "error creating feuille de match",
         });
       }
+    }
   };
 
   const clubOptions = clubs.map((club) => ({

src/app/[locale]/(main)/match/components/pdf/styles.ts

@@ -4,7 +4,7 @@ export const styles = StyleSheet.create({
   page: {
     flexDirection: "column",
     paddingHorizontal: 30,
-    paddingVertical: 10,
+    paddingVertical: 20,
     fontSize: 10,
   },
   header: { marginBottom: 10, textAlign: "center" },
@@ -64,7 +64,7 @@ export const styles = StyleSheet.create({
   footer: {
     position: "absolute",
     zIndex: 1,
-    bottom: 40,
+    bottom: 10,
     left: 0,
     right: 0,
     fontSize: 8,