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The Elixir Scribe tool aims to help developers to embody the values of discipline and craftsmanship of the Scribes, enabling them to more easily write Single Responsibility Code in a Self-Documented Folder Structure for enhanced developer experience and productivity.

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# 🪶 Elixir Scribe 📜

[![Github Sponsor: https://github.com/sponsors/Exadra37](https://raw.githubusercontent.com/Elixir-Scribe/elixir-scribe/main/assets/svg/github-sponsor.svg)](https://github.com/sponsors/Exadra37)

Scribes were an elite in ancient societies, highly regarded and holding special social status. They were disciplined and known for their excellent craftsmanship in writing laws, copying documents, and other related tasks.

The motivation to create the Elixir Scribe tool was to encourage developers to write code that follows the **Single Responsibility Principle** and it's structured in a **Self-Documented Folder Structure**, to enable them to know in seconds all domains, resources, and actions used in a project, while reducing accidental coupling and complexity, which also contributes for less technical debt.

The Elixir Scribe tool enables developers to go from zero to hero in no time, while empowering their craftsmanship and professionalism to reach new levels never imagined before or thought to not be easy to achieve.

Don't just be a Developer or Engineer, become a Scribe Developer and Engineer 🚀

Curious about the next release? Be no more: [check here](#elixir-scribe-next-release) for details and dates.

> [!IMPORTANT]  
>
> → The Elixir Scribe tool is not about implementing Domain Driven Design (DDD), but may share some similarities.

> [!TIP]  
>
> → Clone the branch `WIP` to be on the bleeding edge of the current work being done.  
> → Be prepared for buggy code. It may work or not.  
> → Be ready for breaking changes, which can happen at any moment.

> [!CAUTION]  
>  
> → NEVER base your work on the `WIP` branch. Code and features may disappear.  
> → Push forces can occur at any commit, thus commit history will be broken.

### TOC
  
* [Reduced Complexity Equals to Less Technical Debt](#reduced-complexity-equals-to-less-technical-debt)
* [Self-Documented Folder Structure](#self-documented-folder-structure)
* [Single Responsibility Code](#single-responsibility-code)
* [Benefits](#benefits)
* [Installation](#installation)
* [Quickstart](#quickstart)
* [Documentation](#documentation)
* [Contributing](#contributing)
* [Roadmap](#roadmap)
  + [Next Release](#elixir-scribe-next-release)
  + [Generators](#elixir-scribe-generators)
  + [Marketplace](#elixir-scribe-marketplace)

## Reduced Complexity Equals to Less Technical Debt

The Elixir Scribe generators will help developers to effortless organize their code by Domain, Resource and all possible actions on the Resource to reduce accidental coupling and complexity, which reduces technical debt.

This reduction in accidental coupling and complexity translates into fewer bugs and makes it easier to add new features and implement bug fixes when they arise. Consequently, this results in less maintenance and technical debt across the lifetime of a project, leading to a more robust and easier-to-work-with code-base.

Ultimately, this enhances developer experience, velocity and productivity. This is a win win for both the business and developers.

[TOC](#toc)

## Self-Documented Folder Structure

A Self-Documented Folder Structure **MUST** allow developers to understand in seconds, or in a couple of minutes, all Domains, Resources and actions of the project they are working on.

Can you grasp, in seconds, all domains, resources, and actions in your current large professional or side projects? With the Elixir Scribe folder structure you will always reply **YES** to the this question.

Let's do an exercise. How much time do you need to know all domains, resources and actions from the below fictitious `my_app`?

The below folder structure reflects the Elixir Scribe generator used in the [Quickstart](#quickstart):

```text
$ tree -d -L 5 lib

lib
├── my_app
│   └── domains
│       ├── catalog
│       │   ├── category
│       │   │   ├── create
│       │   │   ├── delete
│       │   │   ├── edit
│       │   │   ├── list
│       │   │   ├── new
│       │   │   ├── read
│       │   │   └── update
│       │   └── product
│       │       ├── create
│       │       ├── delete
│       │       ├── edit
│       │       ├── export
│       │       ├── import
│       │       ├── list
│       │       ├── new
│       │       ├── read
│       │       └── update
│       └── warehouse
│           └── stock
│               ├── export
│               └── import
└── my_app_web
    ├── components
    │   └── layouts
    └── domains
        ├── catalog
        │   ├── category
        │   │   ├── create
        │   │   ├── delete
        │   │   ├── edit
        │   │   ├── list
        │   │   ├── new
        │   │   ├── read
        │   │   └── update
        │   └── product
        │       ├── create
        │       ├── delete
        │       ├── edit
        │       ├── export
        │       ├── import
        │       ├── list
        │       ├── new
        │       ├── read
        │       └── update
        └── warehouse
            └── stock
                ├── export
                └── import

```

> **Domains:** catalog, warehouse  
> **Resources:** category, product, stock  
> **Actions:** create, delete, edit, export, import, list, new, read, update

So, how many seconds did it took you to have an overview of the project and understand all it's Domains, Resources and Actions? How much time do you think you would spend looking through the code-base to find where to fix a bug to `export` a Product or to add a new feature to the Category resource?

This is a very simplistic view of a project. Now, imagine reaping the benefits of this folder structure implemented on your huge code-base, which may now contain dozens, hundreds, or even thousands of resources **(yes, I worked in such a project)**, each with potentially more actions than the ones exemplified here.

Take a moment to compare this folder structure with the traditional ones used in any project you worked so far, be it an Elixir / Phoenix project or not, which often condenses several resources and all their actions into a single module, without even care about Domain boundaries.

[TOC](#toc)

## Single Responsibility Code

Writing code that's easy to read and reason about relies on several aspects, and one of the most important ones may be to follow the Single Responsibility Principle, which is encouraged by the Elixir Scribe tool, when it forces the developer to split all possible actions on a Resource into a single module by action on a Resource.

The Developer can still manage to mix responsibilities in the action module for the Resource. For example, any access to a third party service should be delegated to another module. The action module should do only one thing, to handle the data as per the businesses rules.

The Elixir Scribe tool doesn't enforce an architecture inside the action folder, leaving the Developer free to apply the best one for it's use case. For example, the module generated by the Elixir Scribe tool inside the action folder may be used as an entry-point to orchestrate all required steps to perform the action on the Resource, which will be done in other modules to follow the Single Responsibility Principle, reduce complexity per module, resulting in a **Single Responsibility Code** that it's easier to understand, reasoning about and maintain.

Can you now understand why Elixir Scribe encourages developers to write **Single Responsibility Code** in a **Self-Documented Folder Structure**?

[TOC](#toc)

## Benefits

The main benefits of using the Elixir Scribe Tool to create and maintain Elixir and Phoenix projects:

* Know in seconds all domains, resources, and actions used in your project by just looking at the folder structure. This is priceless for anyone working on the project.
* Newcomers to the project or anyone returning after a while can easily understand what the project is all about and quickly start working on new features or bugs (folder structure for the win).
* The single responsibility principle is encouraged by the design of the folder structure, where a clear separation of domains, resources, and actions occurs, encouraging one resource action per module.
* Helps to reduce tech debt due to the separation of concerns encouraged by the folder structure, which naturally guides developers to not mix new features into an existing module, whether it's a new domain, resource, or just an action on a resource.
* It's much easier to find where to add a new feature without mixing it with existing code. For example: If it's a new action on a resource, just add one more action folder and the respective module(s) inside it.
* Quickly find and start debugging a bug because actions aren't entangled in a huge module with several resources for a domain (context). For example, if the bug is about creating a resource on a given domain, it's straightforward to know where to start due to the folder structure.
* Each resource on a domain has a public API to avoid direct access to the underlying implementation of each resource. This removes cross-domain boundary calls into the internals of each resource implementation, preventing the coupling of domains, which is a significant source of technical debt and complexity in a codebase. The Resource public API MUST be used not only from other domains but also from within the domain itself. This will allow the internals of a resource in a domain to change as needed, provided that we do not affect the public API for it.
* The folder structure is documentation that never lies about what domains (contexts), resources, and actions are available in your project, whether huge or small.
* Enables easier migration from a monolithic to a micro-services architecture when the need arises.

[TOC](#toc)

## Installation

The [Elixir Scribe](https://hexdocs.pm/elixir_scribe/api-reference.html) package can be installed
by adding `elixir_scribe` to your list of dependencies in `mix.exs`:

```elixir
def deps do
  [
    {:elixir_scribe, ">= 0.1.0", only: :dev, runtime: false}
  ]
end
```

[TOC](#toc)

## Quickstart

Let's create a fictitious Online Shop to exemplify how to use the Elixir Scribe tool:

```
mix phx.new my_app --database sqlite3
```

Now let's use the Elixir Scribe generators to create the domain `Catalog` and add to it the resource `Category` with the default actions:

```
mix scribe.gen.html Catalog Category categories name:string desc:string
```

> Elixir Scribe default actions: create, delete, edit, list, new, read, update

Let's add to the domain `Catalog` the resource `Product` with custom actions on top of the default actions:

```
mix scribe.gen.html Catalog Product products name:string desc:string --actions import,export
```

Let's add the domain `Warehouse` with the resource `Stock` without default actions. We will need to provide custom actions:

```
 mix scribe.gen.html Warehouse Stock stocks product_id:integer quantity:integer --actions import,export --no-default-actions
```

[TOC](#toc)

## Documentation

The docs can be found at <https://hexdocs.pm/elixir_scribe>.

Documentation is generated with [ExDoc](https://github.com/elixir-lang/ex_doc).

[TOC](#toc)

## Contributing

The Elixir Scribe tool is highly opinionated, therefore I ask you to first [open a discussion](https://github.com/Exadra37/elixir-scribe/discussions/new?category=ideas) to propose your idea to avoid working and then seeing the PR refused.

[TOC](#toc)

## Roadmap

The roadmap is extensive and due to the continuous high efforts and commitments to develop and maintain everything I may only provide some of the features to Sponsors and/or as Pro versions that will require a paid license.

### Elixir Scribe Next Release

The next release will be `0.4.0` that will add the `scribe.gen.live` generator.

No release date planned for now.

### Elixir Scribe Generators

This generators provide developers with the tools to go from zero to hero in no time, while following a **Self-Documented Folder Structure** that encourages **Single Responsibility Code** when building their Apps or APIs.

#### Typed Contracts

- [x] - Typed Contract is a struct with type specs to guarantee data shape correctness at runtime.

#### Mix Tasks

- [x] `scribe.gen.domain`
- [x] `scribe.gen.html`
- [ ] `scribe.gen.live`
- [ ] `scribe.gen.template`
  * Generates a template to be customized for the project.
    + The template includes the code generated by all Elixir Scribe generators, e.g. `scribe.gen.*`.
  * The customized template can also be uploaded to the marketplace as freebie or one to be sold under a paid license.
- [ ] `scribe.gen.home`
  * Removes current default Home page.
  * Adds new Home page with links to each Domain and Resource.
  * Optimizes default HTMl layout and components for a more clean and usable UI:
    + Table headers in Bold
    + Highlight links in blue, not in bold (black).
- [ ] `scribe.gen.ci` 
  * Generates a CI file for Github or Gitlab with at least the following:
    + `mix format --dry-run --check-formatted`
    + `mix deps.unlock --check-unused`
    + `mix deps.audit`
    + `mix hex.audit`
    + `mix sobelow`
    + `mix credo`
    + `mix doctor`
    + `mix test --cover`
- [ ] `scribe.gen.project`
  * Generates all Domains, Resources and Actions from an Elixir Scribe spec module `%ElixirScribe.ProjectSpecs{}`. 
- [ ] `scribe.gen.api`
  * Adds a dynamic API key (only valid for one request).
  * Adds support for fingerprinting the mobile and web app.
  * Adds support to collect metrics.
  * Adds a Secure Remote Configuration for mobile apps to avoid a new release:
    + To rotate certificate pins. This enables dynamic certificate pinning on the mobile app.
    + To change any settings pre-configured within the release binary (API endpoints, Menus, etc.).
    + To control feature flags.
    + To enable a kill-switch to force upgrade to a new version.
    + To dynamically conduct experiments with user experience, A/B testing.
- [ ] `scribe.gen.auth`
  * Adds enhanced User Authentication:
    + fingerprinting of the client enabled by default 
    + enabled by default to all pages, except Home page.
- [ ] `scribe.gen.oauth`
  * Adds enhanced OAuth for popular providers:
    + fingerprinting of the client enabled by default 
    + enabled by default to all pages, except Home page.
- [ ] `scribe.gen.native`
  * Enables the project to be built for Desktop, Android and Apple.
  * Elixir libraries to build for native targets:
    + [LiveView Native](https://github.com/liveview-native)
    + [Elixir Desktop](https://github.com/elixir-desktop/desktop)
    + [ExTauri](https://github.com/Exadra37/ex_tauri)
- [ ] `scribe.gen.static`
  * Generates a static website from a current project.
- [ ] `scribe.gen.deploy`
  * Adds easy deployment to popular hosting providers.
- [ ] `scribe.gen.admin`

### Elixir Scribe Marketplace

- [ ] Website to sell free and paid licenses for Elixir Scribe templates.
  * The marketplace will support as vendors anyone that builds quality templates with the Elixir Scribe tool.
  * Vendors of paid licenses will pay a fee for each sale, plus payment fees. It will be all very transparent, no hidden fees.

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