Merge pull request #314 from esteemapp/editor-patch

Fix permlink and create patching function

package.json

@@ -32,6 +32,7 @@
     "buffer": "^5.2.1",
     "core-js": "^2.6.0",
     "crypto-js": "^3.1.9-1",
+    "diff-match-patch": "^1.0.4",
     "dsteem": "^0.10.1",
     "intl": "^1.2.5",
     "moment": "^2.22.2",
@@ -62,6 +63,7 @@
     "redux-thunk": "^2.3.0",
     "remarkable": "^1.7.1",
     "rn-placeholder": "^1.3.2",
+    "speakingurl": "^14.0.1",
     "steemconnect": "^2.0.1"
   },
   "devDependencies": {

src/screens/editor/container/editorContainer.js

@@ -207,6 +207,7 @@ class EditorContainer extends Component {
 
       const meta = extractMetadata(fields.body);
       const jsonMeta = makeJsonMetadata(meta, fields.tags);
+      //TODO: check if permlink is available github: #314 https://github.com/esteemapp/esteem-mobile/pull/314
       const permlink = generatePermlink(fields.title);
       const author = currentAccount.name;
       const options = makeOptions(author, permlink);

src/utils/editor.js

@@ -1,17 +1,29 @@
+import getSlug from 'speakingurl';
+import { diff_match_patch } from 'diff-match-patch';
+
 export const getWordsCount = text => (text && typeof text === 'string' ? text.replace(/^\s+|\s+$/g, '').split(/\s+/).length : 0);
 
-export const generatePermlink = (text) => {
-  if (text) {
-    const re = /[^a-z0-9]+/gi;
-    const re2 = /^-*|-*$/g;
-    let permlink = text.replace(re, '-');
+export const generatePermlink = (title, random = false) => {
+  if (title) {
+    const slug = getSlug(title);
+    let perm = slug.toString();
 
-    permlink = `${permlink.replace(re2, '').toLowerCase()}-id-${Math.random()
-      .toString(36)
-      .substr(2, 16)}`;
-    return permlink;
-  }
+    if (random) {
+      const rnd = (Math.random() + 1).toString(16).substring(2);
+      perm = `${slug.toString()}-${rnd}est`;
+    }
+
+    // STEEMIT_MAX_PERMLINK_LENGTH
+    if (perm.length > 255) {
+      perm = perm.substring(perm.length - 255, perm.length);
+    }
+
+    // only letters numbers and dashes
+    perm = perm.toLowerCase().replace(/[^a-z0-9-]+/g, '');
+    return perm;  
+  } 
   return null;
+  
 };
 
 export const generateReplyPermlink = (toAuthor) => {
@@ -117,3 +129,11 @@ export const extractMetadata = (body) => {
 
   return out;
 };
+
+export const createPatch = (text1, text2) => {
+  const dmp = new diff_match_patch();
+  if (!text1 && text1 === '') return undefined;
+  const patches = dmp.patch_make(text1, text2);
+  const patch = dmp.patch_toText(patches);
+  return patch;
+};

yarn.lock

@@ -2758,6 +2758,11 @@ detect-newline@^2.1.0:
   resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-2.1.0.tgz#f41f1c10be4b00e87b5f13da680759f2c5bfd3e2"
   integrity sha1-9B8cEL5LAOh7XxPaaAdZ8sW/0+I=
 
+diff-match-patch@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/diff-match-patch/-/diff-match-patch-1.0.4.tgz#6ac4b55237463761c4daf0dc603eb869124744b1"
+  integrity sha512-Uv3SW8bmH9nAtHKaKSanOQmj2DnlH65fUpcrMdfdaOxUG02QQ4YGZ8AE7kKOMisF7UqvOlGKVYWRvezdncW9lg==
+
 diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
@@ -7835,6 +7840,11 @@ spdx-license-ids@^3.0.0:
   resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-3.0.2.tgz#a59efc09784c2a5bada13cfeaf5c75dd214044d2"
   integrity sha512-qky9CVt0lVIECkEsYbNILVnPvycuEBkXoMFLRWsREkomQLevYhtRKC+R91a5TOAQ3bCMjikRwhyaRqj1VYatYg==
 
+speakingurl@^14.0.1:
+  version "14.0.1"
+  resolved "https://registry.yarnpkg.com/speakingurl/-/speakingurl-14.0.1.tgz#f37ec8ddc4ab98e9600c1c9ec324a8c48d772a53"
+  integrity sha512-1POYv7uv2gXoyGFpBCmpDVSNV74IfsWlDW216UPjbWufNf+bSU6GdbDsxdcxtfwb4xlI3yxzOTKClUosxARYrQ==
+
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"