Support standalone docs apps (#409)

This makes it possible to separate your docs application from your addon's dummy app. Fixes #383.

The way it works is:
 - you're still required to keep both the addon and the docs app in the same repo (so we don't need to worry about separately versioning each)
 - but they can be peers or subdirectories of each other
 - in your docs application you add ember-cli-addon-docs
 - in your docs application you must set the `documentingAddonAt` option to point at the path of the actual addon.

As a side-effect of refactoring the way "Edit this page" links work, I think I also fixed them for API-docs pages in all addon docs sites (not just ones using this new architecture).

Author: ef4

addon/adapters/-addon-docs.js

@@ -1,5 +1,5 @@
 import DS from 'ember-data';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 import { inject as service } from '@ember/service';
 
 export default DS.Adapter.extend({

addon/components/api/x-class/component.js

@@ -3,7 +3,7 @@ import { computed } from '@ember/object';
 import { or } from '@ember/object/computed';
 import { capitalize } from '@ember/string';
 import { memberFilter }  from '../../../utils/computed';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 
 const { showImportPaths } = config['ember-cli-addon-docs'];
 

addon/components/api/x-section/component.js

@@ -1,7 +1,7 @@
 import Component from '@ember/component';
 import { computed } from '@ember/object';
 import layout from './template';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 
 const { showImportPaths } = config['ember-cli-addon-docs'];
 

addon/components/docs-header/component.js

@@ -1,6 +1,6 @@
 import Component from '@ember/component';
 import layout from './template';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 import { computed } from '@ember/object';
 import { classify } from '@ember/string';
 import { addonLogo, addonPrefix } from 'ember-cli-addon-docs/utils/computed';

addon/components/docs-header/search-box/component.js

@@ -3,7 +3,7 @@ import layout from './template';
 import { EKMixin, keyUp } from 'ember-keyboard';
 import { on } from '@ember/object/evented';
 import { task } from 'ember-concurrency';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 import { inject as service } from '@ember/service';
 import { formElementHasFocus } from 'ember-cli-addon-docs/keyboard-config';
 
@@ -18,7 +18,7 @@ export default Component.extend(EKMixin, {
   query: null,
 
   keyboardActivated: true,
-  
+
   didInsertElement() {
     this._super();
 

addon/components/docs-header/search-results/component.js

@@ -5,7 +5,7 @@ import { EKMixin, keyUp, keyDown } from 'ember-keyboard';
 import { on } from '@ember/object/evented';
 import { computed } from '@ember/object';
 import { task } from 'ember-concurrency';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 
 const projectName = config['ember-cli-addon-docs'].projectName;
 
@@ -20,7 +20,7 @@ export default Component.extend(EKMixin, {
   selectedIndex: null,
 
   keyboardActivated: true,
-  
+
   didInsertElement() {
     this._super();
 

addon/components/docs-header/version-selector/component.js

@@ -2,7 +2,7 @@ import Component from '@ember/component';
 import { inject as service } from '@ember/service';
 import layout from './template';
 import { reads } from '@ember/object/computed';
-// import config from 'dummy/config/environment';
+// import config from 'ember-get-config';
 import { computed } from '@ember/object';
 import { A } from '@ember/array';
 import { getOwner } from '@ember/application';

addon/components/docs-hero/component.js

@@ -1,7 +1,7 @@
 import Component from '@ember/component';
 import layout from './template';
 import { addonPrefix, unprefixedAddonName } from 'ember-cli-addon-docs/utils/computed';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 import { classify } from '@ember/string';
 const { projectName, projectDescription } = config['ember-cli-addon-docs'];
 

addon/components/docs-snippet/component.js

@@ -1,7 +1,8 @@
 import { computed } from '@ember/object';
 import Component from '@ember/component';
 import layout from './template';
-import Snippets from "dummy/snippets";
+import config from 'ember-get-config';
+import require from 'require';
 
 /**
   A snippet component for demonstrating some code
@@ -80,8 +81,10 @@ export default Component.extend({
       name += '.hbs';
     }
 
+    let snippet = require(config.modulePrefix + "/snippets")[name] || "";
+
     return this._unindent(
-      (Snippets[name] || "")
+      snippet
         .replace(/^(\s*\n)*/, '')
         .replace(/\s*$/, '')
     );

addon/components/docs-viewer/x-main/component.js

@@ -4,7 +4,7 @@ import { bind } from '@ember/runloop';
 import { computed } from '@ember/object';
 import appFiles from 'ember-cli-addon-docs/app-files';
 import addonFiles from 'ember-cli-addon-docs/addon-files';
-import config from 'dummy/config/environment';
+import config from 'ember-get-config';
 import { getOwner } from '@ember/application';
 
 import layout from './template';
@@ -70,26 +70,38 @@ export default Component.extend({
       return;
     }
 
-    path = path.replace(/\./g, '/');
-
-    let { projectHref, projectPathInRepo, primaryBranch } = config['ember-cli-addon-docs'];
-    let projectPath = projectPathInRepo ? `/${projectPathInRepo}/` : '/';
-    let rootEditUrl = `${projectHref}/edit/${primaryBranch}${projectPath}`;
+    let match = this._locateFile(path);
+    if (match) {
+      let { projectHref, addonPathInRepo, docsAppPathInRepo, primaryBranch } = config['ember-cli-addon-docs'];
+      let parts = [projectHref, 'edit', primaryBranch];
+      if (match.inTree === 'addon') {
+        parts.push(addonPathInRepo);
+      } else {
+        parts.push(docsAppPathInRepo);
+      }
+      parts.push(match.file);
+      return parts.filter(Boolean).join('/');
+    }
+  }),
 
+  _locateFile(path) {
+    path = path.replace(/\./g, '/');
     if (path === 'docs/api/item') {
-      let { path } = getOwner(this).lookup('route:application').paramsFor('docs.api.item');
-      let file = addonFiles.find(f => f.match(path));
-
+      let { projectName } = config['ember-cli-addon-docs'];
+      let model = getOwner(this).lookup('route:application').modelFor('docs.api.item');
+      let filename = model.get('file').replace(new RegExp(`^${projectName}/`), '');
+      let file = addonFiles.find(f => f.match(filename));
       if (file) {
-        return `${rootEditUrl}addon/${file}`;
+        return { file, inTree: 'addon' };
       }
     } else {
       let file = appFiles
         .filter(file => file.match(/\.(hbs|md)$/))
         .find(file => file.match(path));
-
-      return `${rootEditUrl}tests/dummy/app/${file}`;
+      if (file) {
+        return { file, inTree: 'app' };
+      }
     }
-  })
+  }
 
 });