diff --git a/README.md b/README.md new file mode 100644 index 0000000..eedf865 --- /dev/null +++ b/README.md @@ -0,0 +1,196 @@ +# Edufeed-Web + +A [re-frame](https://github.com/day8/re-frame) application designed to ... well, that part is up to +you. + +## Getting Started + +### Project Overview + +* Architecture: +[Single Page Application (SPA)](https://en.wikipedia.org/wiki/Single-page_application) +* Languages + - Front end is [ClojureScript](https://clojurescript.org/) with ([re-frame](https://github.com/day8/re-frame)) +* Dependencies + - UI framework: [re-frame](https://github.com/day8/re-frame) + ([docs](https://github.com/day8/re-frame/blob/master/docs/README.md), + [FAQs](https://github.com/day8/re-frame/blob/master/docs/FAQs/README.md)) -> + [Reagent](https://github.com/reagent-project/reagent) -> + [React](https://github.com/facebook/react) + - Client-side routing: [bidi](https://github.com/juxt/bidi) and [pushy](https://github.com/clj-commons/pushy) +* Build tools + - CLJS compilation, dependency management, REPL, & hot reload: [`shadow-cljs`](https://github.com/thheller/shadow-cljs) +* Development tools + - Debugging: [CLJS DevTools](https://github.com/binaryage/cljs-devtools), + [`re-frame-10x`](https://github.com/day8/re-frame-10x) + +#### Directory structure + +* [`/`](/../../): project config files +* [`dev/`](dev/): source files compiled only with the [dev](#running-the-app) profile + - [`user.cljs`](dev/cljs/user.cljs): symbols for use during development in the +[ClojureScript REPL](#connecting-to-the-browser-repl-from-a-terminal) +* [`resources/public/`](resources/public/): SPA root directory; +[dev](#running-the-app) / [prod](#production) profile depends on the most recent build + - [`index.html`](resources/public/index.html): SPA home page + - Dynamic SPA content rendered in the following `div`: + ```html +
+ ``` + - Customizable; add headers, footers, links to other scripts and styles, etc. + - Generated directories and files + - Created on build with either the [dev](#running-the-app) or [prod](#production) profile + - `js/compiled/`: compiled CLJS (`shadow-cljs`) + - Not tracked in source control; see [`.gitignore`](.gitignore) +* [`src/ied/`](src/ied/): SPA source files (ClojureScript, +[re-frame](https://github.com/Day8/re-frame)) + - [`core.cljs`](src/ied/core.cljs): contains the SPA entry point, `init` +* [`.github/workflows/`](.github/workflows/): contains the +[github actions](https://github.com/features/actions) pipelines. + - [`test.yaml`](.github/workflows/test.yaml): Pipeline for testing. + + +### Editor/IDE + +Use your preferred editor or IDE that supports Clojure/ClojureScript development. See +[Clojure tools](https://clojure.org/community/resources#_clojure_tools) for some popular options. + +### Environment Setup + +1. Install [JDK 8 or later](https://openjdk.java.net/install/) (Java Development Kit) +2. Install [Node.js](https://nodejs.org/) (JavaScript runtime environment) which should include + [NPM](https://docs.npmjs.com/cli/npm) or if your Node.js installation does not include NPM also install it. +5. Clone this repo and open a terminal in the `ied` project root directory + +### Browser Setup + +Browser caching should be disabled when developer tools are open to prevent interference with +[`shadow-cljs`](https://github.com/thheller/shadow-cljs) hot reloading. + +Custom formatters must be enabled in the browser before +[CLJS DevTools](https://github.com/binaryage/cljs-devtools) can display ClojureScript data in the +console in a more readable way. + +#### Chrome/Chromium + +1. Open [DevTools](https://developers.google.com/web/tools/chrome-devtools/) (Linux/Windows: `F12` +or `Ctrl-Shift-I`; macOS: `⌘-Option-I`) +2. Open DevTools Settings (Linux/Windows: `?` or `F1`; macOS: `?` or `Fn+F1`) +3. Select `Preferences` in the navigation menu on the left, if it is not already selected +4. Under the `Network` heading, enable the `Disable cache (while DevTools is open)` option +5. Under the `Console` heading, enable the `Enable custom formatters` option + +#### Firefox + +1. Open [Developer Tools](https://developer.mozilla.org/en-US/docs/Tools) (Linux/Windows: `F12` or +`Ctrl-Shift-I`; macOS: `⌘-Option-I`) +2. Open [Developer Tools Settings](https://developer.mozilla.org/en-US/docs/Tools/Settings) +(Linux/macOS/Windows: `F1`) +3. Under the `Advanced settings` heading, enable the `Disable HTTP Cache (when toolbox is open)` +option + +Unfortunately, Firefox does not yet support custom formatters in their devtools. For updates, follow +the enhancement request in their bug tracker: +[1262914 - Add support for Custom Formatters in devtools](https://bugzilla.mozilla.org/show_bug.cgi?id=1262914). + +## Development + +### Running the App + +Start a temporary local web server, build the app with the `dev` profile, and serve the app, +browser test runner and karma test runner with hot reload: + +```sh +npm install +npx shadow-cljs watch app +``` + +Please be patient; it may take over 20 seconds to see any output, and over 40 seconds to complete. + +When `[:app] Build completed` appears in the output, browse to +[http://localhost:8280/](http://localhost:8280/). + +[`shadow-cljs`](https://github.com/thheller/shadow-cljs) will automatically push ClojureScript code +changes to your browser on save. To prevent a few common issues, see +[Hot Reload in ClojureScript: Things to avoid](https://code.thheller.com/blog/shadow-cljs/2019/08/25/hot-reload-in-clojurescript.html#things-to-avoid). + +Opening the app in your browser starts a +[ClojureScript browser REPL](https://clojurescript.org/reference/repl#using-the-browser-as-an-evaluation-environment), +to which you may now connect. + +#### Connecting to the browser REPL from your editor + +See +[Shadow CLJS User's Guide: Editor Integration](https://shadow-cljs.github.io/docs/UsersGuide.html#_editor_integration). +Note that `npm run watch` runs `npx shadow-cljs watch` for you, and that this project's running build ids is +`app`, `browser-test`, `karma-test`, or the keywords `:app`, `:browser-test`, `:karma-test` in a Clojure context. + +Alternatively, search the web for info on connecting to a `shadow-cljs` ClojureScript browser REPL +from your editor and configuration. + +For example, in Vim / Neovim with `fireplace.vim` +1. Open a `.cljs` file in the project to activate `fireplace.vim` +2. In normal mode, execute the `Piggieback` command with this project's running build id, `:app`: + ```vim + :Piggieback :app + ``` + +#### Connecting to the browser REPL from a terminal + +1. Connect to the `shadow-cljs` nREPL: + ```sh + lein repl :connect localhost:8777 + ``` + The REPL prompt, `shadow.user=>`, indicates that is a Clojure REPL, not ClojureScript. + +2. In the REPL, switch the session to this project's running build id, `:app`: + ```clj + (shadow.cljs.devtools.api/nrepl-select :app) + ``` + The REPL prompt changes to `cljs.user=>`, indicating that this is now a ClojureScript REPL. +3. See [`user.cljs`](dev/cljs/user.cljs) for symbols that are immediately accessible in the REPL +without needing to `require`. + +### Running `shadow-cljs` Actions + +See a list of [`shadow-cljs CLI`](https://shadow-cljs.github.io/docs/UsersGuide.html#_command_line) +actions: +```sh +npx shadow-cljs --help +``` + +Please be patient; it may take over 10 seconds to see any output. Also note that some actions shown +may not actually be supported, outputting "Unknown action." when run. + +Run a shadow-cljs action on this project's build id (without the colon, just `app`): +```sh +npx shadow-cljs