chore: init

server_src/api-msgs.js

@@ -0,0 +1,121 @@
+/* 
+ * ©2024 满月叶
+ * Github: MoonLeeeaf
+ * 通讯辅助类
+ */
+
+const io = require("./iolib")
+const hash = require("./hashlib")
+const vals = require("./val")
+const users = require("./api-users")
+
+let getSameHashedValue = (a, b) => {
+    let _a = [hash.md5(a) + hash.sha256(a), hash.md5(b) + hash.sha256(b)].sort()
+    let [_1, _2] = _a
+    return hash.sha256hex(hash.sha256hex(_1) + hash.sha256hex(_2))
+}
+
+let getSingleChatDir = (a, b) => {
+    return vals.LINGCHAIR_SINGLE_MESSAGE_DIR + "/" + getSameHashedValue(a, b)
+}
+
+let apis = {
+    // 储存单聊消息: 操作者, 访问密钥, 发送至, 消息内容
+    // 消息存储方式为计次直接储存, 每一个消息都有对应的 ID
+    // 读取某一段落时使用遍历方式
+    // @API
+    sendSingleMsg: (name, accessToken, target, msg) => {
+        if (!users.checkAccessToken(name, accessToken))
+            return { code: -1, msg: "访问令牌错误" }
+
+        if (!users.isUserExists(target))
+            return { code: -1, msg: "目标用户不存在" }
+
+        if (msg.trim() == "")
+        return { code: -1, msg: "不是有内容的消息我不要" }
+
+        let fileDir = getSingleChatDir(name, target)
+        io.mkdirs(fileDir)
+
+        let countFile = io.open(fileDir + "/count.txt", "rw")
+        if (!io.exists(fileDir + "/count.txt"))
+            countFile.write("0")
+
+        let count = parseInt(countFile.read())
+        count += 1
+        let time = Date.now()
+        io.open(fileDir + "/msg_" + count + ".json", "w").writeJson({
+            name: name,
+            msg: msg,
+            msgid: count,
+            time: time,
+        }).close()
+
+        countFile.write(count + "")
+
+        return { code: 0, msg: "成功", msgid: count, time: time }
+    },
+    // 读取消息记录
+    // 从起始点到结束点读取,由最新到最老(计次越大越新)
+    // 不提供 startId 则默认从最新计次往前数
+    // 若超过 limit 计次范围, 直接终止遍历
+    // @API
+    getSingleMsgHistroy: (name, accessToken, target, sid, limit) => {
+        if (!users.checkAccessToken(name, accessToken))
+            return { code: -1, msg: "访问令牌错误" }
+
+        if (!users.isUserExists(target))
+            return { code: -1, msg: "目标用户不存在" }
+
+        let fileDir = getSingleChatDir(name, target)
+        io.mkdirs(fileDir)
+        let countFile = io.open(fileDir + "/count.txt", "rw")
+
+        if (!io.exists(fileDir + "/count.txt"))
+            countFile.write("0")
+
+        let startId = sid
+        if (startId == null)
+            startId = parseInt(countFile.read().toString())
+
+        let list = []
+        let i = startId
+        let i2 = 0
+        let cfn
+        while(true) {
+            cfn = fileDir + "/msg_" + i + ".json"
+            // 1. 超过界限
+            // 2. 超过计次
+            // 3. 超过最大限度
+            if ((!io.exists(cfn)) || i2 > limit || i2 > 100) break
+            try {
+                let data = io.open(cfn, "r").readJson()
+                list.unshift(data)
+            } catch (e) {
+                return { code: -2, msg: e }
+            }
+            i--
+            i2++
+        }
+
+        return { code: 0, msg: "成功", histroy: list }
+    },
+
+    // 上传图片: 操作者, 访问密钥, 发送至, 图片
+    // 未来需要一些操作来删除未使用的图片文件
+    // @API
+    uploadImage: (name, accessToken, target, msg) => {
+        if (!users.checkAccessToken(name, accessToken))
+            return { code: -1, msg: "访问令牌错误" }
+
+        if (!users.isUserExists(target))
+            return { code: -1, msg: "目标用户不存在" }
+
+        let fileDir = getSingleChatDir(name, target) + "/images/"
+        io.mkdirs(fileDir)
+
+
+    },
+}
+
+module.exports = apis