More exercise-related stuff

2021-12-29 02:29:09 -06:00 · 2021-12-29 02:29:09 -06:00 · 65732b8676
parent 763f00d920
commit 65732b8676
10 changed files with 593 additions and 32 deletions
--- a/api/db.ts
+++ b/api/db.ts
@ -0,0 +1,3 @@
+import { PrismaClient } from "@prisma/client";
+
+export const prisma = new PrismaClient();
--- a/api/grade.ts
+++ b/api/grade.ts
@ -0,0 +1,8 @@
+import { Router } from "express";
+
+const router = Router();
+
+router.post("/claim", async (req, res) => {
+});
+
+export default router;
--- a/api/index.ts
+++ b/api/index.ts
@ -1,31 +1,19 @@
-import express, { json } from "express";
-import { PrismaClient } from "@prisma/client";
+import express, { json as jsonBodyParser } from "express";
+
+import userRouter from "./user";
+import gradeRouter from "./grade";

-const prisma = new PrismaClient();
 const app = express();
-
-app.use(json());
+app.use(jsonBodyParser({ "strict": true }));

 app.get("/hello", (_, res) => {
  res.send("hellosu there");
 });

-app.get("/user/:userId(\\d+)", async (req, res) => {
-  const userId = parseInt(req.params.userId);
-  const thisUser = await prisma.user.findFirst({
-    where: { id: userId },
-  });
+// routes
+app.use("/grade", gradeRouter);
+app.use("/user", userRouter);

-  if (!thisUser) {
-    return res.sendStatus(404);
-  }
-
-  res.send(thisUser);
-});
-
-/**
- * logic for our api will go here
- */
 export default {
  "path": "/api",
  "handler": app,
--- a/api/user.ts
+++ b/api/user.ts
@ -0,0 +1,27 @@
+import { Router } from "express";
+import { hash as bcryptHash } from "bcrypt";
+
+import { prisma } from "./db";
+
+const router = Router();
+
+router.post("/user/register", async (req, res) => {
+  const body = req.body;
+
+  const email = body.email;
+  const password = body.password;
+  const passwordHash = await bcryptHash(password, 10);
+
+  const newUser = await prisma.user.create({
+    "data": {
+      email,
+      passwordHash,
+    },
+  });
+
+  res.send({
+    "id": newUser.id,
+  });
+});
+
+export default router;
--- a/lib/graders/index.ts
+++ b/lib/graders/index.ts
--- a/package-lock.json
+++ b/package-lock.json
@ -10,6 +10,7 @@
      "dependencies": {
        "@nuxtjs/axios": "^5.13.6",
        "@prisma/client": "^3.7.0",
+        "bcrypt": "^5.0.1",
        "core-js": "^3.19.3",
        "express": "^4.17.2",
        "nuxt": "^2.15.8",
@ -25,6 +26,7 @@
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        "@nuxtjs/eslint-module": "^3.0.2",
+        "@types/bcrypt": "^5.0.0",
        "eslint": "^8.4.1",
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@ -2875,6 +2926,15 @@
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@ -3830,6 +3895,17 @@
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+        },
+        "semver": {
+          "version": "7.3.5",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz",
+          "integrity": "sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==",
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+        }
+      }
+    },
    "@nodelib/fs.scandir": {
      "version": "2.1.5",
      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@ -19017,6 +19278,15 @@
        "@babel/types": "^7.3.0"
      }
    },
+    "@types/bcrypt": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@types/bcrypt/-/bcrypt-5.0.0.tgz",
+      "integrity": "sha512-agtcFKaruL8TmcvqbndlqHPSJgsolhf/qPWchFlgnW1gECTN/nKbFcoFnvKAQRFfKbh+BO6A3SWdJu9t+xF3Lw==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
    "@types/body-parser": {
      "version": "1.19.2",
      "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.2.tgz",
@ -19811,6 +20081,11 @@
      "resolved": "https://registry.npmjs.org/@xtuc/long/-/long-4.2.2.tgz",
      "integrity": "sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ=="
    },
+    "abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
+    },
    "accepts": {
      "version": "1.3.7",
      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@ -19837,6 +20112,14 @@
      "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.2.0.tgz",
      "integrity": "sha512-k+iyHEuPgSw6SbuDpGQM+06HQUa04DZ3o+F6CSzXMvvI5KMvnaEqXe+YVe555R9nn6GPt404fos4wcgpw12SDA=="
    },
+    "agent-base": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
+      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
+      "requires": {
+        "debug": "4"
+      }
+    },
    "aggregate-error": {
      "version": "3.1.0",
      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz",
@ -19935,6 +20218,27 @@
      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw=="
    },
+    "are-we-there-yet": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-2.0.0.tgz",
+      "integrity": "sha512-Ci/qENmwHnsYo9xKIcUJN5LeDKdJ6R1Z1j9V/J5wyq8nh/mYPEpIKJbBZXtZjG04HiK7zV/p6Vs9952MrMeUIw==",
+      "requires": {
+        "delegates": "^1.0.0",
+        "readable-stream": "^3.6.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
+      }
+    },
    "arg": {
      "version": "5.0.1",
      "resolved": "https://registry.npmjs.org/arg/-/arg-5.0.1.tgz",
@ -20230,6 +20534,15 @@
      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
    },
+    "bcrypt": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-5.0.1.tgz",
+      "integrity": "sha512-9BTgmrhZM2t1bNuDtrtIMVSmmxZBrJ71n8Wg+YgdjHuIWYF7SjjmCPZFB+/5i/o/PIeRpwVJR3P+NrpIItUjqw==",
+      "requires": {
+        "@mapbox/node-pre-gyp": "^1.0.0",
+        "node-addon-api": "^3.1.0"
+      }
+    },
    "big.js": {
      "version": "5.2.2",
      "resolved": "https://registry.npmjs.org/big.js/-/big.js-5.2.2.tgz",
@ -20868,6 +21181,11 @@
        "simple-swizzle": "^0.2.2"
      }
    },
+    "color-support": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-support/-/color-support-1.1.3.tgz",
+      "integrity": "sha512-qiBjkpbMLO/HL68y+lh4q0/O1MZFj2RX6X/KmMa3+gJD3z+WwI1ZzDHysvqHGS3mP6mznPckpXmw1nI9cJjyRg=="
+    },
    "colorette": {
      "version": "1.4.0",
      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.4.0.tgz",
@ -20977,6 +21295,11 @@
      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.2.0.tgz",
      "integrity": "sha512-ZMkYO/LkF17QvCPqM0gxw8yUzigAOZOSWSHg91FH6orS7vcEj5dVZTidN2fQ14yBSdg97RqhSNwLUXInd52OTA=="
    },
+    "console-control-strings": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
+    },
    "consolidate": {
      "version": "0.15.1",
      "resolved": "https://registry.npmjs.org/consolidate/-/consolidate-0.15.1.tgz",
@ -21561,6 +21884,11 @@
      "resolved": "https://registry.npmjs.org/defu/-/defu-5.0.0.tgz",
      "integrity": "sha512-VHg73EDeRXlu7oYWRmmrNp/nl7QkdXUxkQQKig0Zk8daNmm84AbGoC8Be6/VVLJEKxn12hR0UBmz8O+xQiAPKQ=="
    },
+    "delegates": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+    },
    "depd": {
      "version": "1.1.2",
      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@ -21590,6 +21918,11 @@
      "resolved": "https://registry.npmjs.org/detect-indent/-/detect-indent-5.0.0.tgz",
      "integrity": "sha1-OHHMCmoALow+Wzz38zYmRnXwa50="
    },
+    "detect-libc": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups="
+    },
    "devalue": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/devalue/-/devalue-2.0.1.tgz",
@ -23191,6 +23524,22 @@
      "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=",
      "dev": true
    },
+    "gauge": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-3.0.2.tgz",
+      "integrity": "sha512-+5J6MS/5XksCuXq++uFRsnUd7Ovu1XenbeuIuNRJxYWjgQbPuFhT14lAvsWfqfAmnwluf1OwMjz39HjfLPci0Q==",
+      "requires": {
+        "aproba": "^1.0.3 || ^2.0.0",
+        "color-support": "^1.1.2",
+        "console-control-strings": "^1.0.0",
+        "has-unicode": "^2.0.1",
+        "object-assign": "^4.1.1",
+        "signal-exit": "^3.0.0",
+        "string-width": "^4.2.3",
+        "strip-ansi": "^6.0.1",
+        "wide-align": "^1.1.2"
+      }
+    },
    "gensync": {
      "version": "1.0.0-beta.2",
      "resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
@ -23473,6 +23822,11 @@
        "has-symbols": "^1.0.2"
      }
    },
+    "has-unicode": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
+      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk="
+    },
    "has-value": {
      "version": "1.0.0",
      "resolved": "https://registry.npmjs.org/has-value/-/has-value-1.0.0.tgz",
@ -23723,6 +24077,15 @@
      "resolved": "https://registry.npmjs.org/https-browserify/-/https-browserify-1.0.0.tgz",
      "integrity": "sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM="
    },
+    "https-proxy-agent": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz",
+      "integrity": "sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==",
+      "requires": {
+        "agent-base": "6",
+        "debug": "4"
+      }
+    },
    "human-signals": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/human-signals/-/human-signals-2.1.0.tgz",
@ -24909,6 +25272,11 @@
        "lower-case": "^1.1.1"
      }
    },
+    "node-addon-api": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-3.2.1.tgz",
+      "integrity": "sha512-mmcei9JghVNDYydghQmeDX8KoAm0FAiYyIcUt/N4nhyAipB17pllZQDOJD2fotxABnt4Mdz+dKTO7eftLg4d0A=="
+    },
    "node-fetch": {
      "version": "2.6.6",
      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.6.tgz",
@ -24995,6 +25363,14 @@
        "vary": "^1.1.2"
      }
    },
+    "nopt": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/nopt/-/nopt-5.0.0.tgz",
+      "integrity": "sha512-Tbj67rffqceeLpcRXrT7vKAN8CwfPeIBgM7E6iBkmKLV7bEMwpGgYLGv0jACUsECaa/vuxP0IjEont6umdMgtQ==",
+      "requires": {
+        "abbrev": "1"
+      }
+    },
    "normalize-package-data": {
      "version": "2.5.0",
      "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.5.0.tgz",
@ -25044,6 +25420,17 @@
        "path-key": "^3.0.0"
      }
    },
+    "npmlog": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/npmlog/-/npmlog-5.0.1.tgz",
+      "integrity": "sha512-AqZtDUWOMKs1G/8lwylVjrdYgqA4d9nu8hc+0gzRxlDb1I10+FHBGMXs6aiQHFdCUUlqH99MUMuLfzWDNDtfxw==",
+      "requires": {
+        "are-we-there-yet": "^2.0.0",
+        "console-control-strings": "^1.1.0",
+        "gauge": "^3.0.0",
+        "set-blocking": "^2.0.0"
+      }
+    },
    "nth-check": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.0.1.tgz",
@ -27304,6 +27691,11 @@
      "resolved": "https://registry.npmjs.org/server-destroy/-/server-destroy-1.0.1.tgz",
      "integrity": "sha1-8Tv5KOQrnD55OD5hzDmYtdFObN0="
    },
+    "set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
+    },
    "set-value": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
@ -29775,6 +30167,14 @@
        "is-symbol": "^1.0.3"
      }
    },
+    "wide-align": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
+      "integrity": "sha512-eDMORYaPNZ4sQIuuYPDHdQvf4gyCF9rEEV/yPxGfwPkRodwEgiMUUXTx/dex+Me0wxx53S+NgUHaP7y3MGlDmg==",
+      "requires": {
+        "string-width": "^1.0.2 || 2 || 3 || 4"
+      }
+    },
    "widest-line": {
      "version": "3.1.0",
      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-3.1.0.tgz",
--- a/package.json
+++ b/package.json
@ -16,6 +16,7 @@
  "dependencies": {
    "@nuxtjs/axios": "^5.13.6",
    "@prisma/client": "^3.7.0",
+    "bcrypt": "^5.0.1",
    "core-js": "^3.19.3",
    "express": "^4.17.2",
    "nuxt": "^2.15.8",
@ -31,6 +32,7 @@
    "@nuxt/typescript-build": "^2.1.0",
    "@nuxtjs/eslint-config-typescript": "^8.0.0",
    "@nuxtjs/eslint-module": "^3.0.2",
+    "@types/bcrypt": "^5.0.0",
    "eslint": "^8.4.1",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-nuxt": "^3.1.0",
--- a/prisma/migrations/20211228070433_initial/migration.sql
+++ b/prisma/migrations/20211228070433_initial/migration.sql
@ -1,9 +0,0 @@
-- CreateTable
-CREATE TABLE "User" (
-    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-    "email" TEXT NOT NULL,
-    "name" TEXT
-);
-
-- CreateIndex
-CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
--- a/prisma/migrations/20211229031309_initial/migration.sql
+++ b/prisma/migrations/20211229031309_initial/migration.sql
@ -0,0 +1,67 @@
+-- CreateTable
+CREATE TABLE "User" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "email" TEXT NOT NULL,
+    "name" TEXT,
+    "passwordHash" TEXT NOT NULL
+);
+
+-- CreateTable
+CREATE TABLE "ApiKey" (
+    "key" TEXT NOT NULL PRIMARY KEY,
+    "expires" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "ownerId" INTEGER NOT NULL,
+    CONSTRAINT "ApiKey_ownerId_fkey" FOREIGN KEY ("ownerId") REFERENCES "User" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Page" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT
+);
+
+-- CreateTable
+CREATE TABLE "Concept" (
+    "name" TEXT NOT NULL PRIMARY KEY
+);
+
+-- CreateTable
+CREATE TABLE "Exercise" (
+    "name" TEXT NOT NULL PRIMARY KEY,
+    "isGroup" BOOLEAN NOT NULL,
+    "parentName" TEXT,
+    "graderConfig" TEXT NOT NULL,
+    "graderType" TEXT NOT NULL,
+    CONSTRAINT "Exercise_parentName_fkey" FOREIGN KEY ("parentName") REFERENCES "Exercise" ("name") ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "ExerciseInstance" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "exerciseName" TEXT NOT NULL,
+    "userId" INTEGER NOT NULL,
+    "timeSubmitted" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "timeClaimed" DATETIME NOT NULL,
+    "timeoutSeconds" INTEGER NOT NULL,
+    "timeCompleted" DATETIME,
+    "needsGrading" BOOLEAN NOT NULL,
+    "gradingProgress" TEXT NOT NULL,
+    "gradingStatus" TEXT NOT NULL,
+    "gradingVerdict" TEXT NOT NULL,
+    "gradingFeedback" TEXT NOT NULL,
+    CONSTRAINT "ExerciseInstance_exerciseName_fkey" FOREIGN KEY ("exerciseName") REFERENCES "Exercise" ("name") ON DELETE RESTRICT ON UPDATE CASCADE,
+    CONSTRAINT "ExerciseInstance_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "ExerciseConceptSat" (
+    "exerciseName" TEXT NOT NULL,
+    "conceptName" TEXT NOT NULL,
+    "satisfiesFactor" REAL NOT NULL,
+
+    PRIMARY KEY ("exerciseName", "conceptName"),
+    CONSTRAINT "ExerciseConceptSat_exerciseName_fkey" FOREIGN KEY ("exerciseName") REFERENCES "Exercise" ("name") ON DELETE RESTRICT ON UPDATE CASCADE,
+    CONSTRAINT "ExerciseConceptSat_conceptName_fkey" FOREIGN KEY ("conceptName") REFERENCES "Concept" ("name") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@ -11,7 +11,82 @@ datasource db {
 }

 model User {
-  id    Int     @id @default(autoincrement())
-  email String  @unique
-  name  String?
+  id              Int                @id @default(autoincrement())
+  email           String             @unique
+  name            String?
+  passwordHash    String
+  solvedExercises ExerciseInstance[]
+  apiKeys         ApiKey[]
+}
+
+model ApiKey {
+  key     String   @id @default(uuid())
+  expires DateTime @default(now())
+  scopes  String // JSON array of scopes
+
+  owner   User @relation(fields: [ownerId], references: [id])
+  ownerId Int
+}
+
+model Page {
+  id Int @id @default(autoincrement())
+}
+
+model Concept {
+  name      String               @id
+  exercises ExerciseConceptSat[]
+}
+
+model Exercise {
+  name      String               @id
+  concepts  ExerciseConceptSat[]
+  instances ExerciseInstance[]
+
+  isGroup    Boolean
+  children   Exercise[] @relation("Lineage")
+  parent     Exercise?  @relation("Lineage", fields: [parentName], references: [name])
+  parentName String?
+
+  // https://github.com/prisma/prisma/issues/3786
+  graderConfig String?
+}
+
+model ExerciseInstance {
+  id Int @id @default(autoincrement())
+
+  exercise     Exercise @relation(fields: [exerciseName], references: [name])
+  exerciseName String
+
+  user   User @relation(fields: [userId], references: [id])
+  userId Int
+
+  job   Job? @relation(fields: [jobId], references: [id])
+  jobId Int?
+}
+
+model Job {
+  id Int @id @default(autoincrement())
+
+  timeSubmitted  DateTime  @default(now())
+  timeClaimed    DateTime
+  timeoutSeconds Int
+  timeCompleted  DateTime?
+
+  gradingProgress  String // JSON progress information
+  gradingStatus    String
+  gradingVerdict   String
+  gradingFeedback  String // JSON
+  ExerciseInstance ExerciseInstance[]
+}
+
+model ExerciseConceptSat {
+  exercise     Exercise @relation(fields: [exerciseName], references: [name])
+  exerciseName String
+
+  concept     Concept @relation(fields: [conceptName], references: [name])
+  conceptName String
+
+  satisfiesFactor Float
+
+  @@id([exerciseName, conceptName])
 }