feat: 每日一题

Author: lucifer

app.js

@@ -10,6 +10,7 @@ const logger = require("koa-logger");
 const passport = require("./middleware/passport");
 const index = require("./routes/index");
 const users = require("./routes/users");
+const dailyProblem = require("./routes/dailyProblem");
 const lectures = require("./routes/lectures");
 const mockUserInfo = require("./middleware/mockUserInfo");
 
@@ -50,6 +51,7 @@ app.use(async (ctx, next) => {
 app.use(index.routes(), index.allowedMethods());
 app.use(users.routes(), users.allowedMethods());
 app.use(lectures.routes(), lectures.allowedMethods());
+app.use(dailyProblem.routes(), dailyProblem.allowedMethods());
 
 // error-handling
 app.on("error", (err, ctx) => {

routes/dailyProblem.js

@@ -0,0 +1,46 @@
+const router = require("koa-router")();
+const solutions = require("../static/solution/solutions.json");
+const { decrypt } = require("../utils/crypto");
+
+const { success } = require("../utils/request");
+
+router.get("/api/v1/daily-problem", async (ctx) => {
+  // 1. 获取当前时间
+  // 2. 根据当前时间和活动开始时间计算当前是 Day 几
+  // 3. 根据 Day 几 计算出具体返回哪一个题目
+
+  ctx.body = success({
+    day: 1,
+    title: "66. 加一",
+    link: "https://leetcode-cn.com/problems/plus-one",
+    tags: ["基础篇", "数组"], // 目前所有 README 都是没有的。因此如果没有的话，你可以先不返回，有的话就返回。后面我慢慢补
+    pres: ["数组的遍历(正向遍历和反向遍历)"],
+    description: `
+给定一个由整数组成的非空数组所表示的非负整数，在该数的基础上加一。
+
+最高位数字存放在数组的首位， 数组中每个元素只存储单个数字。
+
+你可以假设除了整数 0 之外，这个整数不会以零开头。
+
+示例 1:
+
+输入: [1,2,3]
+输出: [1,2,4]
+解释: 输入数组表示数字 123。
+示例 2:
+
+输入: [4,3,2,1]
+输出: [4,3,2,2]
+解释: 输入数组表示数字 4321。
+    `,
+  });
+});
+
+router.get("/api/v1/daily-problem/solution", async (ctx) => {
+  // 逻辑和上面类似，只是返回值为 Markdown
+  ctx.body = success({
+    content: decrypt(solutions[1].content),
+  });
+});
+
+module.exports = router;

static/lectures/generate.js

@@ -257,11 +257,11 @@ const lectures = {
 };
 
 // 先导
-lectures.intro["-2"].content = encrypt(
+lectures.intro["-4"].content = encrypt(
   Buffer.from(fs.readFileSync("./-1.intro-01.md"), "utf8")
 );
 
-lectures.intro["-1"].content = encrypt(
+lectures.intro["-3"].content = encrypt(
   Buffer.from(fs.readFileSync("./-2.intro-02.md"), "utf8")
 );
 

static/lectures/lectures-by-category.json

@@ -0,0 +1,15 @@
+const fs = require("fs");
+
+const { encrypt } = require("../../utils/crypto.js");
+
+const solutions = {
+  1: {},
+};
+
+[1].forEach((i) => {
+  solutions[i].content = encrypt(
+    Buffer.from(fs.readFileSync(`./d${i}.md`), "utf8")
+  );
+});
+
+fs.writeFileSync("./solutions.json", JSON.stringify(solutions));

static/lectures/lectures-by-id.json

@@ -0,0 +1,5 @@
+{
+  "1": {
+    "content": "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+  }
+}