defmodule Mix.Tasks.History.Gen.Migration do
@shortdoc "Generates migrations for history"
@moduledoc """
Generates the required database migrations for history.
"""
use Mix.Task
import Mix.Ecto
import Mix.Generator
@migrations_path "priv/templates/migrations"
@doc false
def run(args) do
no_umbrella!("ecto.gen.migration")
repos = parse_repo(args)
Enum.each(repos, fn repo ->
ensure_repo(repo, args)
path = Ecto.Migrator.migrations_path(repo)
app_dir = Application.app_dir(:history)
app_migrations_path = Path.join(app_dir, @migrations_path)
{:ok, migrations} = app_migrations_path |> File.ls()
source_paths =
migrations
|> Enum.map(&Path.join(app_migrations_path, &1))
generated_files =
source_paths
|> Enum.map(fn source_path ->
EEx.eval_file(source_path,
module_prefix: app_module(),
db_prefix: History.Db.db_prefix()
)
end)
target_files =
source_paths
|> Enum.map(fn source_path ->
basename = Path.basename(source_path, ".eex")
Path.join(path, basename)
end)
Enum.map(target_files, &IO.inspect/1)
create_directory(path)
[target_files, generated_files]
|> Enum.zip()
|> Enum.each(fn {target_file, generated_file} ->
create_file(target_file, generated_file)
end)
end)
end
defp app_module do
Mix.Project.config()
|> Keyword.fetch!(:app)
|> to_string()
|> Macro.camelize()
end
end