add method for check discord join and role

src/services/discord.svr.ts

@@ -0,0 +1,64 @@
+const DISCORD_API_HOST = 'https://discord.com/api/v10'
+/**
+ * 直接通过discord接口, 获取工会中某用户信息
+ * 返回的数据结构:
+ * https://discord.com/developers/docs/resources/guild#guild-member-object
+ * //TODO: 须在.env中配置以下参数:
+ * DISCROD_GUILD_ID
+ * DISCORD_BOT_TOKEN
+ */
+export async function getGuildMember(uid: string) {
+  const url = `${DISCORD_API_HOST}/guilds/${process.env.DISCROD_GUILD_ID}/members/${uid}`
+  const token = process.env.DISCORD_BOT_TOKEN
+  const response = await fetch(url, {
+    headers: {
+      authorization: `Bot ${token}`,
+    },
+  })
+  const data = await response.json()
+  return data
+}
+
+/**
+ * 检查用户是否已经加入工会
+ * @param uid
+ * @returns
+ */
+export async function checkJoinGuld(uid: string) {
+  try {
+    const res = await getGuildMember(uid)
+    /**
+     * if user not in guild, res will be:
+     * {
+     *  "message": "Unknown User",
+     *  "code": 10013
+     *  }
+     */
+    if (res.code === 10013) {
+      return false
+    }
+    return true
+  } catch (e) {
+    return false
+  }
+}
+/**
+ * 检查用户是否已经获得某个角色
+ * @param uid
+ * @param roleId
+ * @returns
+ */
+export async function checkGotRole(uid: string, roleId: string) {
+  try {
+    const res = await getGuildMember(uid)
+    if (res.code === 10013) {
+      return false
+    }
+    if (res.roles.includes(roleId)) {
+      return true
+    }
+    return false
+  } catch (e) {
+    return false
+  }
+}