feat: add prisma schema and migrations

- Define Task and State entities with relations
- Add StateHistory for tracking state changes
- Include seed script for initial data
- Add initial and soft delete migrations

prisma/migrations/20260513220551_init/migration.sql

@@ -0,0 +1,55 @@
+-- CreateTable
+CREATE TABLE "State" (
+    "name" TEXT NOT NULL,
+
+    CONSTRAINT "State_pkey" PRIMARY KEY ("name")
+);
+
+-- CreateTable
+CREATE TABLE "Task" (
+    "id" TEXT NOT NULL,
+    "title" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "dueDate" TEXT NOT NULL,
+    "completed" BOOLEAN NOT NULL DEFAULT false,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "Task_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "StateHistory" (
+    "id" TEXT NOT NULL,
+    "state" TEXT NOT NULL,
+    "date" TEXT NOT NULL,
+    "taskId" TEXT NOT NULL,
+    "order" INTEGER NOT NULL,
+
+    CONSTRAINT "StateHistory_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Note" (
+    "id" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+    "taskId" TEXT NOT NULL,
+    "order" INTEGER NOT NULL,
+
+    CONSTRAINT "Note_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "StateHistory_taskId_idx" ON "StateHistory"("taskId");
+
+-- CreateIndex
+CREATE INDEX "Note_taskId_idx" ON "Note"("taskId");
+
+-- AddForeignKey
+ALTER TABLE "StateHistory" ADD CONSTRAINT "StateHistory_taskId_fkey" FOREIGN KEY ("taskId") REFERENCES "Task"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "StateHistory" ADD CONSTRAINT "StateHistory_state_fkey" FOREIGN KEY ("state") REFERENCES "State"("name") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Note" ADD CONSTRAINT "Note_taskId_fkey" FOREIGN KEY ("taskId") REFERENCES "Task"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20260514201510_add_soft_delete/migration.sql

@@ -0,0 +1,5 @@
+-- AlterTable
+ALTER TABLE "Task" ADD COLUMN     "deletedAt" TIMESTAMP(3);
+
+-- CreateIndex
+CREATE INDEX "Task_deletedAt_idx" ON "Task"("deletedAt");

prisma/migrations/migration_lock.toml

@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "postgresql"

prisma/schema.prisma

@@ -0,0 +1,54 @@
+generator client {
+  provider = "prisma-client"
+  output   = "../src/generated/prisma"
+}
+
+datasource db {
+  provider = "postgresql"
+}
+
+model State {
+  name String @id
+
+  tasks StateHistory[]
+}
+
+model Task {
+  id          String    @id @default(uuid())
+  title       String
+  description String
+  dueDate     String
+  completed   Boolean   @default(false)
+  createdAt   DateTime  @default(now())
+  updatedAt   DateTime  @updatedAt
+  deletedAt   DateTime?
+
+  stateHistory StateHistory[]
+  notes        Note[]
+
+  @@index([deletedAt])
+}
+
+model StateHistory {
+  id     String   @id @default(uuid())
+  state  String
+  date   String
+  taskId String
+  order  Int
+
+  task  Task  @relation(fields: [taskId], references: [id], onDelete: Cascade)
+  stateRef State @relation(fields: [state], references: [name])
+
+  @@index([taskId])
+}
+
+model Note {
+  id     String @id @default(uuid())
+  content String
+  taskId String
+  order  Int
+
+  task Task @relation(fields: [taskId], references: [id], onDelete: Cascade)
+
+  @@index([taskId])
+}

prisma/seed.ts

@@ -0,0 +1,121 @@
+import "dotenv/config";
+import { PrismaClient } from "../src/generated/prisma/client.js";
+import { PrismaPg } from "@prisma/adapter-pg";
+
+const connectionString = process.env.DATABASE_URL;
+if (!connectionString) {
+  throw new Error("DATABASE_URL is not set");
+}
+
+const adapter = new PrismaPg({ connectionString });
+const prisma = new PrismaClient({ adapter });
+
+async function seed() {
+  console.log("Seeding database...");
+
+  await prisma.state.createMany({
+    data: [
+      { name: "new" },
+      { name: "active" },
+      { name: "resolved" },
+      { name: "closed" },
+    ],
+  });
+
+  const tasks = [
+    {
+      title: "Complete Project Proposal",
+      description: "Prepare and submit the project proposal for approval.",
+      dueDate: "2023-12-15",
+      stateHistory: [
+        { state: "new", date: "2023-12-01" },
+        { state: "active", date: "2023-12-05" },
+      ],
+      notes: ["Check proposal guidelines", "Include budget estimates"],
+    },
+    {
+      title: "Design Wireframes",
+      description: "Create wireframes for the user interface.",
+      dueDate: "2023-12-20",
+      stateHistory: [
+        { state: "new", date: "2023-12-02" },
+        { state: "active", date: "2023-12-06" },
+      ],
+      notes: ["Review design patterns", "Seek feedback from the team"],
+    },
+    {
+      title: "Implement User Authentication",
+      description: "Develop user authentication functionality.",
+      dueDate: "2023-12-25",
+      stateHistory: [
+        { state: "new", date: "2023-12-03" },
+        { state: "active", date: "2023-12-07" },
+      ],
+      notes: ["Research secure authentication methods", "Implement password hashing"],
+    },
+    {
+      title: "Write API Documentation",
+      description: "Document the RESTful API for external developers.",
+      dueDate: "2023-12-30",
+      stateHistory: [
+        { state: "new", date: "2023-12-04" },
+        { state: "active", date: "2023-12-08" },
+      ],
+      notes: ["Use Swagger/OpenAPI for documentation", "Provide clear examples"],
+    },
+    {
+      title: "Bug Fixes and Testing",
+      description: "Address reported bugs and perform thorough testing.",
+      dueDate: "2024-01-05",
+      stateHistory: [
+        { state: "new", date: "2023-12-05" },
+        { state: "active", date: "2023-12-09" },
+      ],
+      notes: ["Create test cases for critical scenarios", "Perform regression testing"],
+    },
+    {
+      title: "Project Deployment",
+      description: "Prepare for and deploy the project to production.",
+      dueDate: "2024-01-10",
+      stateHistory: [
+        { state: "new", date: "2023-12-06" },
+        { state: "active", date: "2023-12-10" },
+      ],
+      notes: ["Coordinate with DevOps for deployment", "Monitor performance after deployment"],
+    },
+  ];
+
+  for (const task of tasks) {
+    await prisma.task.create({
+      data: {
+        title: task.title,
+        description: task.description,
+        dueDate: task.dueDate,
+        stateHistory: {
+          create: task.stateHistory.map((entry, index) => ({
+            state: entry.state,
+            date: entry.date,
+            order: index,
+          })),
+        },
+        notes: {
+          create: task.notes.map((content, index) => ({
+            content,
+            order: index,
+          })),
+        },
+      },
+    });
+  }
+
+  console.log("Seed completed!");
+}
+
+seed()
+  .catch((e) => {
+    console.error(e);
+    process.exit(1);
+  })
+  .finally(async () => {
+    await prisma.$disconnect();
+  });