init

.gitignore

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+node_modules

index.js

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+hexo.extend.tag.register('recommended_posts', require('./lib/recommender')(hexo), {async: true});

lib/recommender.js

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+var rp = require('request-promise');
+
+module.exports = function (hexo) {
+    return function (args) {
+        var log = hexo.log;
+        var config = hexo.config;
+        var recommended_posts_config = config.recommended_posts;
+
+        var server = recommended_posts_config.server;
+        var timeoutInMillis = recommended_posts_config.timeout;
+        var internal = parseInt(recommended_posts_config.internalLinks);
+        var external = parseInt(recommended_posts_config.externalLinks);
+
+        var post = this;
+
+        if (post.tags.data.length == 0) {
+            log.warn('To have better recommendation, specify tags for ' + post.title);
+        }
+
+        return rp({
+            method: 'POST',
+            baseUrl: server,
+            uri: 'posts',
+            body: {
+                permalink: post.permalink,
+                title: post.title,
+                tags: post.tags.data.map(tag => tag.name)
+            },
+            json: true,
+            timeout: timeoutInMillis
+        }).then(function (body) {
+            log.info('Post ' + post.title + ' uploaded to recommendation server')
+        }).then(function () {
+            return rp({
+                baseUrl: server,
+                uri: 'recommendation',
+                qs: {
+                    permalink: post.permalink,
+                    internal: internal,
+                    external: external
+                },
+                json: true,
+                timeoutInMillis: timeoutInMillis
+            })
+        }).then(function (links) {
+            if (links.length == 0) {
+                log.warn("No posts recommended by the server for " + post.title);
+            } else {
+                var items = links.map(link => '<li><a href="' + link.permalink + '">' + link.title + '</a></li>');
+                return '<div class="recommended_posts"><ul>' + items.join("\n") + '</ul></div>';
+            }
+        }).catch(function (err) {
+            log.warn("Unable to fetch recommendation from server " + err.message);
+        });
+    }
+}

package.json

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+{
+  "name": "hexo-recommended-posts",
+  "version": "0.0.1",
+  "description": "Recommended Posts Plugin for Hexo",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "recommendation",
+    "hexo",
+    "plugin"
+  ],
+  "author": "Hui Wang",
+  "license": "ISC",
+  "dependencies": {
+    "request": "^2.83.0",
+    "request-promise": "^4.2.2"
+  }
+}