478 lines
13 KiB
Markdown
478 lines
13 KiB
Markdown
<div align="center">
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<img alt="oixb.run" src="https://oixb.run/logo.png" width="240"/>
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# Country _Block_
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[]()
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[]()
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[]()
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[]()
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[]()
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[]()
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</div>
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# _Why_? 🤷
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É o que é, bloquear trafego de paises nao desejados.
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# _Whyy_? 🤷
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A fully functional **demo** app
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showing interaction between an<br />
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**`Elixir`** (**`Phoenix`**) App
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and **`Gitea`** server
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using the
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[`gitea`](https://github.com/dwyl/gitea) package. <br />
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**_Step-by-step_ tutorial** showing you how to do it yourself!
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[](https://github.com/dwyl/gitea-demo/actions/workflows/ci.yml)
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[](https://codecov.io/github/dwyl/gitea-demo?branch=main)
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[](https://hex.pm/packages/gitea)
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[](https://libraries.io/hex/gitea)
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[](https://hexdocs.pm/gitea/api-reference.html)
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[](https://github.com/dwyl/gitea-demo/issues)
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[](https://hits.dwyl.com/dwyl/gitea-demo)
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</div>
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# _Why_? 🤷
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**We love** having **_detailed_ docs** and **examples**
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that **explain _exactly_ how** to get **up-and-running**. 😍 <br />
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**_Comprehensive_ docs/tutorials**
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are a _gift_ to our future selves and teammates. 🎁 <br />
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We constantly refer back to them
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and update them as required. <br />
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If you find them useful,
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please ⭐ the repo to let us know.
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# _What_? 💭
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This project is a _barebones_ demonstration
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of using
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[`gitea`](https://github.com/dwyl/gitea)
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in a **`Phoenix`** App. <br />
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Our intention is to be beginner-friendly
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and focus on showcasing **_one_ thing**.
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It can be used as the basis for another app
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or you can borrow chunks of setup/code.
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# _Who_? 👥
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The demo is made for people of all Elixir/Phoenix skill levels. <br />
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Following all the steps in this example should take around **`10 minutes`**. <br />
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If you get stuck, please _don't suffer_ in silence! <br />
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It's probably something we didn't cover well enough, it's not you! <br />
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**Get help** by opening an issue:
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[**gitea-demo/issues**](https://github.com/dwyl/gitea-demo/issues)
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<br />
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# _How?_ 💻
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### 0. Prerequisites 📝
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***Before*** you start,
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make sure you have the following:
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1. `Elixir`: https://elixir-lang.org/install.html <br />
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New to `Elixir`? see:
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[github.com/dwyl/**learn-elixir**](https://github.com/dwyl/learn-elixir)
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2. `Phoenix`: https://hexdocs.pm/phoenix/installation.html <br />
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New to `Phoenix`? see:
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[github.com/dwyl/**learn-phoenix-framework**](https://github.com/dwyl/learn-phoenix-framework)
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3. Access to a `Gitea` Server
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e.g: https://github.com/dwyl/gitea-server
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<br />
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### 1. Create a New `Phoenix` App 🆕
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For this example,
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we are creating a _basic_ **`Phoenix`** App
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without the live dashboard or mailer (email)
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or `Ecto` (Postgres database)
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because we don't need those components
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in order to showcase the `gitea` package.
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```sh
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mix phx.new app --no-ecto --no-dashboard --no-mailer
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```
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When prompted to install dependencies:
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```sh
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Fetch and install dependencies? [Yn]
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```
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Type `y` and hit the `[Enter]` key to install.
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You should see something like this:
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```sh
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* running mix deps.get
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* running cd assets && npm install && node node_modules/webpack/bin/webpack.js
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* running mix deps.compile
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```
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#### Checkpoint: Working `Phoenix` App 🏁
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Change into the directory of your newly created `Phoenix` app
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```sh
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cd app
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```
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And start the app:
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```sh
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mix setup
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mix phx.server
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```
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You should see output similar to the following:
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```sh
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Generated app app
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[info] Running AppWeb.Endpoint with cowboy 2.9.0 at 127.0.0.1:4000 (http)
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[info] Access AppWeb.Endpoint at http://localhost:4000
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[debug] Downloading esbuild from https://registry.npmjs.org/esbuild-darwin-64/-/esbuild-darwin-64-0.14.29.tgz
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[watch] build finished, watching for changes...
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```
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That confirms the app is working.
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Open your web browser to the URL: http://localhost:4000
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You should see the default **`Phoenix`** home page:
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<img width="828" alt="image" src="https://user-images.githubusercontent.com/194400/165493125-0e714185-e268-411f-bb7d-99f7cd0eb8ba.png">
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So far so good. 👌 <br />
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#### 1.1 Clear out `page` template
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Before we continue,
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let's do a clear out of the `page` template:
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`lib/app_web/templates/page/index.html.heex`
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Open the file and delete the contents so it's completely empty.
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With the `Phoenix` server running (`mix phx.server`),
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the page should refresh and now look like this:
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#### 1.2 Fix the Failing Test
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If you run the tests after the previous step:
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```sh
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mix test
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```
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You will see output similar to the following:
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```sh
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1) test GET / (AppWeb.PageControllerTest)
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test/app_web/controllers/page_controller_test.exs:4
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Assertion with =~ failed
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code: assert html_response(conn, 200) =~ "Welcome to Phoenix!"
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left: "<!DOCTYPE html>\n<html lang=\"en\">\n <head>\n <meta charset=\"utf-8\">\n \n<meta content=\"Am45cWxzFjAKCBcxXQAYHRUmaQZ5RjUFoYS35KUzdLCk3YBN-IQU8rs3\" name=\"csrf-token\">\n<title data-suffix=\" · Phoenix Framework\">App · Phoenix Framework</title> etc."
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right: "Welcome to Phoenix!"
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stacktrace:
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test/app_web/controllers/page_controller_test.exs:6: (test)
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Finished in 0.1 seconds (0.08s async, 0.07s sync)
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3 tests, 1 failure
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```
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This is because we removed the block of text that the test expects to be on the page.
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Easy enough to fix by updating the assertion in the test.
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Open the `test/app_web/controllers/page_controller_test.exs` file
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and replace the line:
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```elixir
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assert html_response(conn, 200) =~ "Welcome to Phoenix!"
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```
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With the following:
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```elixir
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assert html_response(conn, 200) =~ "Get Started"
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```
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Once you save the file and re-run the tests `mix test`,
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they should pass:
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```sh
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...
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Finished in 0.1 seconds (0.08s async, 0.06s sync)
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3 tests, 0 failures
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```
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With that out-of-the way,
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let's crack on with the actual demo!
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<br />
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### 2. Add `gitea` to `deps` ⬇️
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Open the
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[`mix.exs`](https://github.com/dwyl/gitea-demo/blob/main/mix.exs)
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file in the root of your `app` folder,
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locate the `defp deps do` section and add the following line:
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```elixir
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{:gitea, "~> 1.1.0"},
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```
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Once you've saved your `mix.exs` file,
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e.g:
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[`mix.exs#L55-L56`](https://github.com/dwyl/gitea-demo/blob/58c6bf0f7b96a370f6a90408526f6e335014025a/mix.exs#L55-L56) <br />
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run:
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```sh
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mix deps.get
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```
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With the dependency installed,
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we can now setup.
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### 3. Setup: Environment Variables 📝
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To get the **`gitea`** package working in your **`Phoenix`** App,
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you will need **2 environment variables**.
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See:
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[**`.env_sample`**](https://github.com/dwyl/gitea/blob/main/.env_sample)
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for a sample.
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1. `GITEA_URL` - the domain where your gitea Server is deployed,
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without the protocol, <br />
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e.g: `gitea-server.fly.dev`
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2. `GITEA_ACCESS_TOKEN` - the REST API Access Token
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Instructions for getting your token:
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[gitea-server#connect-via-rest-api-https](https://github.com/dwyl/gitea-server#connect-via-rest-api-https)
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#### 3.1 Create your `.env` File
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Create a new file in root the `app` project called `.env`.
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Copy the contents of the
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[**`.env_sample`**](https://github.com/dwyl/gitea/blob/main/.env_sample)
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file and paste it in the `.env` file.
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Update the _values_ of the environment variables with the real ones.
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Run the following command in your terminal (in the root of your project):
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```sh
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source .env
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```
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This will export the environment variables into your terminal environment.
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> If you're new to Environment Variables
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> Please see:
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> [github.com/dwyl/**learn-environment-variables**](https://github.com/dwyl/learn-environment-variables)
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#### Context: `gitea` Server on Fly.io
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In _our_ case our **`gitea`** Server instance
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is deployed to [fly.io](https://fly.io/)
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at:
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[gitea-server.fly.dev](https://gitea-server.fly.dev/) <br />
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To understand how this was deployed,
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please see:
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[github.com/dwyl/**gitea-server**](https://github.com/dwyl/gitea-server)
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<br />
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<!--
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#### _Test_ Your Setup!
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-->
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### 4. Create Function to Interact with the `gitea` Repo
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As noted in the first step above,
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the homepage of our app
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is the default `Phoenix` homepage.
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In this section we're going to change that!
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Open the `lib/app_web/controllers/page_controller.ex` file.
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You should see the following:
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```elixir
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defmodule AppWeb.PageController do
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use AppWeb, :controller
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def index(conn, _params) do
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render(conn, "index.html")
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end
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end
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```
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Inside the file,
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replace the `index/2` function
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with the following:
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```elixir
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def index(conn, _params) do
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org_name = "demo-org"
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repo_name = "hello-world"
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file_name = "README.md"
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{:ok, %{body: raw_html}} =
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Gitea.remote_render_markdown_html(org_name, repo_name, file_name)
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render(conn, "index.html", html: raw_html)
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end
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```
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This updated function specifies 3 variables:
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1. `org_name`: the organisation/owner name for a repository on the `gitea` server.
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2. `repo_name`: repository name on the `gitea` server
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3. `file_name`: the Markdown file we want to render as HTML.
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It invokes the
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[`Gitea.remote_render_markdown_html/3`](https://hexdocs.pm/gitea/Gitea.html#remote_render_markdown_html/4)
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function that renders the Markdown contained in the `file_name`
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as `HTML` which can be rendered on a page.
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<br />
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### 5. Update the Template to Display the Text
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Open the file:
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`lib/app_web/templates/page/index.html.heex`
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Insert the following line:
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```html
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<%= raw(@html) %>
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```
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Now you will see the `Markdown` rendered in the template:
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#### Recap!
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At this point we have demonstrated
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rendering a Markdown (`README.md`)
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file hosted on a `gitea` server
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in a `Phoenix` app using the `gitea` package.
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This is _already_ cool,
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but it doesn't even scratch the surface of what's possible!
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Let's _deploy_ the app to
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[Fly.io](https://fly.io/)
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so that we can _show_ our progress
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to other people in our team!
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<br />
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## 6. _Deploy_ to Fly.io 🚀
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We have simplified the steps to deploy a **`Phoenix`** App to Fly.io
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for the sake of brevity.
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If you are totally new to Fly.io in _general_
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or deploying a **`Phoenix`** App _specifically_,
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Please see:
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https://fly.io/docs/speedrun/
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The `Dockerfile`, `fly.toml` and `config/runtime.exs` files
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can be used to deploy to Fly.io,
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e.g:
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https://gitea-demo.fly.dev
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> The `Dockerfile` is inspired by:
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> https://github.com/fly-apps/hello_elixir/blob/main/Dockerfile
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### Deployment Instructions:
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```sh
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mix release.init
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```
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> Borrow the init from an app that we've deployed before.
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> e.g:
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> https://github.com/dwyl/gitea-demo/pull/1/commits/9bb69a57364ac51e0ce5ba84106954d2c7a5377f
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Initialize the Fly.io config:
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```sh
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fly launch
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```
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> Select the relevant options.
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Setup the required environment variables
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on Fly using the CLI:
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```sh
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flyctl secrets set GITEA_URL=gitea-server.fly.dev
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flyctl secrets set GITEA_ACCESS_TOKEN=your-token-here
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flyctl secrets set SECRET_KEY_BASE=https://hexdocs.pm/phoenix/Mix.Tasks.Phx.Gen.Secret.html
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```
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Deploy:
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```sh
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flyctl deploy
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```
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You should see:
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```sh
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Release v1 created
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Monitoring Deployment
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1 desired, 1 placed, 1 healthy, 0 unhealthy [health checks: 1 total, 1 passing]
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```
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And when you visit the App URL in your browser:
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https://gitea-demo.fly.dev/
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<br/>
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## Conclusion!
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That concludes our **_basic_ demo**.
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What we covered:
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1. Setup a new **`Phoenix`** App
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2. Added the **`gitea`** dependency
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3. Added the required environment variables
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4. Created code to render a markdown file
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using the `Gitea.remote_render_markdown_html/3` function.
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5. Deployed the demo to Fly.io!
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If you found this demo/tutorial useful,
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please ⭐ the repo to let us know.
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Thank you!
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<hr />
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But wait! There's more!!
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See: [**Part _Two_!**](https://github.com/dwyl/gitea-demo/blob/main/part2.md)
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<br /><br /><br />
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</div> |