suspend

src/libs/page.js

@@ -0,0 +1,197 @@
+import { getStoreKey } from "@/api/lock";
+import storage from "@/libs/storage";
+import { getNoteMetaNew, getNoteBlob } from "@/api/note";
+import { reject } from "bluebird";
+import { unwrap, md5 } from '@/libs/secret'
+
+
+export async function initPageData(view) {
+
+    let noteKey = view.noteForm.key;
+
+    let storeKey = getStoreKey(noteKey);
+    view.secret.storeKey = storeKey;
+
+    let keyMeta = storage.session.getObject("keyMeta");
+    if (keyMeta) {
+        view.state.lock = 0;
+        view.secret.cipher = keyMeta.cipher;
+        view.secret.secretKey = keyMeta.secretKey;
+        view.state.serverTime = keyMeta.serverTime;
+        // key init Time
+        view.state.initTime = keyMeta.serverTime;
+
+        await storage.local.setText(storeKey, "0|" + view.secret.cipher + "|0|" + view.state.initTime + "|");
+        storage.session.delete("keyMeta");
+        return "000000";
+    }
+
+    let noteMeta = storage.session.getObject(noteKey+".noteMeta");
+
+    if(null==noteMeta){
+        let resp = await getNoteMetaNew(view.noteForm.key);
+        if (null == resp || null == resp.data) {
+            return "100006";
+        }
+        let result = resp.data;
+        if (result.code != '000000') {
+            return result.code;
+        }
+        let noteMeta = result.data;
+        if (null == noteMeta) {
+            return "100001";
+        }
+        if (null == noteMeta.key) {
+            return "100002";
+        }
+        storage.session.setObject(noteKey+".noteMeta",noteMeta);
+    }else{
+        getNoteMetaNew(view.noteForm.key).then(function(resp){
+            if (null == resp || null == resp.data) {
+                return "100006";
+            }
+            let result = resp.data;
+            if (result.code != '000000') {
+                return result.code;
+            }
+            let noteMeta = result.data;
+            if (null == noteMeta) {
+                return "100001";
+            }
+            if (null == noteMeta.key) {
+                return "100002";
+            }
+        });
+    }
+
+    //view
+    if (1 == noteMeta.state) {
+
+        view.secret.secretKey = noteMeta.secretKey;
+
+        view.state.lock = noteMeta.lock;
+        view.state.initTime = new Date().getTime();
+        view.state.initTtl = noteMeta.ttl;
+        view.state.ttl = noteMeta.ttl;
+        view.state.serverTime = noteMeta.serverTime;
+
+        view.secret.cipher = "00000000000000000000000000000000";//noteMeta.cipher; //读者有没有值可配置
+        view.secret.md5 = noteMeta.md5;
+
+        await loadText(view);
+        return "000000";
+    }
+
+    //deleted
+    if (0 == noteMeta.state) {
+        let storeKey = getStoreKey(noteKey);
+        storage.local.delete(storeKey);
+        // user deleted
+        if (noteMeta.ttl > 0) {
+            // errorMeta = 100003;
+            return "100003";
+            //return errorRouter(100003);
+        } else {// timeout
+            // errorMeta = 100004;
+            return "100004";
+            //return errorRouter(100004);
+        }
+    }
+
+    //edit or unsubmitted
+    if (null == noteMeta.state) {
+        let storeKey = getStoreKey(noteKey);
+        const storeInfo = await storage.local.getText(storeKey);
+
+        //if has storage , then edit
+        if (null != storeInfo) {
+            view.secret.secretKey = noteMeta.secretKey;
+
+            let starray = storeInfo.split('|');
+            view.state.lock = parseInt(starray[0]);
+            view.secret.cipher = starray[1];
+            view.state.initTime = parseInt(starray[3]);
+            //draw text;
+            if (starray[4]) {
+                view.noteForm.text = unwrap(starray[4], view.secret.secretKey);
+            }
+
+            return "000000";
+        }
+
+        //storage is empty 
+        let df = storage.session.getText(storeKey + "_delete")
+        if (df) {//unsubmitted,user deleted.
+            // errorMeta = 100003;
+            return "100003";
+        } else {//unsubmitted
+            // errorMeta = 100005;
+            return "100005";
+        }
+    }
+
+
+}
+
+async function loadText(view) {
+
+    let storeInfo = await storage.local.getText(view.secret.storeKey);
+
+    let starray = [];
+    if (storeInfo) {
+        starray = storeInfo.split('|');
+    }
+
+    if (!storeInfo || !starray[4] || (md5(starray[4]) != view.secret.md5)) {
+
+        let bytesString = await getServerNote(view.noteForm.key);
+        view.noteForm.text = unwrap(bytesString, view.secret.secretKey);
+    } else {
+        starray = storeInfo.split('|');
+
+        if (!starray[4]) {
+            return;
+        }
+
+        view.noteForm.text = unwrap(starray[4], view.secret.secretKey);
+        //this.noteForm.escapeText = getEscapeText(this.noteForm.text);
+
+        // local is usable, and set commited flag
+        if ("0" == starray[2]) {
+            storage.local.setText(this.secret.storeKey, starray[0] + "|" + starray[1] + "|1|" + starray[3] + "|" + starray[4]);
+        }
+    }
+}
+
+async function getServerNote(key) {
+    let resp = await getNoteBlob(key)
+    if (!resp.data || resp.data.size == 0) {
+        return "100006";
+    }
+
+    let blob = new Blob([resp.data], {
+        type: resp.data.type
+    });
+
+    let bytesString = await fileReader(blob);
+
+    return bytesString;
+
+
+}
+
+async function fileReader(blob) {
+    return new Promise(function (resolve) {
+        let reader = new FileReader();
+        reader.onload = function (e) {
+            if (!e.target.result || e.target.result.byteLength == 0) {
+                reject("");
+            }
+            var bytes = new Uint8Array(e.target.result);
+            bytes = bytes.subarray(7, bytes.length - 7);
+            let bytesString = bytes.join(",");
+            resolve(bytesString);
+        };
+        reader.readAsArrayBuffer(blob)
+    });
+}