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Writes GitHub Issues to "stdio" in a table with borders and colors.
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lib/github/issues.ex
# ┌───────────────────────────────────────────────────────────┐
# │ Inspired by the book "Programming Elixir" by Dave Thomas. │
# └───────────────────────────────────────────────────────────┘
defmodule GitHub.Issues do
@moduledoc """
Fetches a list of issues from a GitHub project.
"""
use PersistConfig
alias GitHub.Issues.CLI
require Logger
@typep issue :: map
@url_template Application.get_env(@app, :url_template)
@doc """
Fetches issues from a GitHub `project` of a given `user`.
Returns a tuple of either `{:ok, [issue]}` or `{:error, text}`.
## Parameters
- `user` - GitHub user
- `project` - GitHub project
- `url_template` - URL template
## Examples
alias GitHub.Issues
Issues.fetch("laravel", "elixir")
"""
@spec fetch(CLI.user(), CLI.project(), String.t()) ::
{:ok, [issue]} | {:error, String.t()}
def fetch(user, project, url_template \\ @url_template) do
Logger.info("Fetching GitHub Issues from #{user}/#{project}...")
try do
with url <- url(url_template, user, project),
{:ok, %{status_code: 200, body: body}} <- HTTPoison.get(url) do
{:ok, :jsx.decode(body, [:return_maps])}
else
{:ok, %{status_code: 301}} -> {:error, "status code: 301 (not found)"}
{:ok, %{status_code: 404}} -> {:error, "status code: 404 (not found)"}
{:error, %{reason: reason}} -> {:error, "reason: #{inspect(reason)}"}
end
rescue
error -> {:error, "exception: #{Exception.message(error)}"}
end
end
## Private functions
# @doc """
# Returns a URL based on `user` and `project`.
# ## Parameters
# - `url_template` - URL template
# - `user` - user
# - `project` - project
# ## Examples
# iex> alias GitHub.Issues
# iex> app = Mix.Project.config[:app]
# iex> url_template = Application.get_env app, :url_template
# iex> Issues.url url_template, "laravel", "elixir"
# "https://api.github.com/repos/laravel/elixir/issues"
# iex> alias GitHub.Issues
# iex> url_template = "elixir-lang.org/<project>/{user}/wow"
# iex> Issues.url url_template, "José", "Elixir"
# "elixir-lang.org/Elixir/José/wow"
# """
@spec url(String.t(), CLI.user(), CLI.project()) :: String.t()
defp url(url_template, user, project) do
url_template
|> String.replace(~r/{user}|<user>/, user)
|> String.replace(~r/{project}|<project>/, project)
end
end