Code maintainability fixes

server/prisma/migrations/20251206071150_add_plan_exercise_table/migration.sql

@@ -0,0 +1,29 @@
+-- CreateTable
+CREATE TABLE "PlanExercise" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "planId" TEXT NOT NULL,
+    "exerciseId" TEXT NOT NULL,
+    "order" INTEGER NOT NULL,
+    "isWeighted" BOOLEAN NOT NULL DEFAULT false,
+    CONSTRAINT "PlanExercise_planId_fkey" FOREIGN KEY ("planId") REFERENCES "WorkoutPlan" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "PlanExercise_exerciseId_fkey" FOREIGN KEY ("exerciseId") REFERENCES "Exercise" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_WorkoutPlan" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "userId" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "exercises" TEXT,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "WorkoutPlan_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+INSERT INTO "new_WorkoutPlan" ("createdAt", "description", "exercises", "id", "name", "updatedAt", "userId") SELECT "createdAt", "description", "exercises", "id", "name", "updatedAt", "userId" FROM "WorkoutPlan";
+DROP TABLE "WorkoutPlan";
+ALTER TABLE "new_WorkoutPlan" RENAME TO "WorkoutPlan";
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;

server/prisma/schema.prisma

@@ -7,7 +7,6 @@ generator client {
 
 datasource db {
   provider = "sqlite"
-  url      = env("DATABASE_URL")
 }
 
 model User {
@@ -60,6 +59,7 @@ model Exercise {
   isUnilateral         Boolean  @default(false)
   
   sets                 WorkoutSet[]
+  planExercises        PlanExercise[]
 }
 
 model WorkoutSession {
@@ -102,8 +102,19 @@ model WorkoutPlan {
   user        User     @relation(fields: [userId], references: [id], onDelete: Cascade)
   name        String
   description String?
-  exercises   String   // JSON string of exercise IDs
+  exercises   String?  // JSON string of exercise IDs (Deprecated, to be removed)
+  planExercises PlanExercise[]
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
 }
 
+model PlanExercise {
+  id           String      @id @default(uuid())
+  planId       String
+  plan         WorkoutPlan @relation(fields: [planId], references: [id], onDelete: Cascade)
+  exerciseId   String
+  exercise     Exercise    @relation(fields: [exerciseId], references: [id])
+  order        Int
+  isWeighted   Boolean     @default(false)
+}
+