Settings resource; oauth2 app authorization model; UI cleanup

app/models/Setting.model.js

@@ -0,0 +1,56 @@
+const { Model } = require('flitter-orm')
+
+class SettingModel extends Model {
+    static get services() {
+        return [...super.services, 'utility']
+    }
+
+    static get schema() {
+        return {
+            key: String,
+            value: String,
+            history: [String],
+        }
+    }
+
+    static async guarantee(key, value = '') {
+        if ( !(await this.findOne({ key })) ) {
+            const new_inst = new this({ key })
+            new_inst.set(value)
+            await new_inst.save()
+        }
+    }
+
+    static async get(key) {
+        const inst = await this.findOne({ key })
+        return inst.get()
+    }
+
+    static async set(key, value) {
+        const inst = await this.findOne({ key })
+        inst.set(value)
+        await inst.save()
+    }
+
+    get() {
+        return JSON.parse(this.value)
+    }
+
+    set(value) {
+        if ( Array.isArray(this.history) )
+            this.history.push(this.value)
+
+        this.value = JSON.stringify(value)
+    }
+
+    async to_api() {
+        return {
+            id: this.key,
+            key: this.key,
+            value: this.get(),
+            history: this.history || [],
+        }
+    }
+}
+
+module.exports = exports = SettingModel