Files
bDS2/lib/bds/scripts.ex

250 lines
7.0 KiB
Elixir

defmodule BDS.Scripts do
@moduledoc false
import Ecto.Query
alias BDS.Frontmatter
alias BDS.Projects
alias BDS.Repo
alias BDS.Scripts.Script
alias BDS.Slug
def create_script(attrs) do
now = System.system_time(:second)
project_id = attr(attrs, :project_id)
title = attr(attrs, :title) || ""
kind = attr(attrs, :kind)
%Script{}
|> Script.changeset(%{
id: Ecto.UUID.generate(),
project_id: project_id,
slug: unique_slug(project_id, Slug.slugify(title), "script"),
title: title,
kind: kind,
entrypoint: attr(attrs, :entrypoint) || default_entrypoint(kind),
enabled: true,
version: 1,
file_path: "",
status: :draft,
content: attr(attrs, :content),
created_at: now,
updated_at: now
})
|> Repo.insert()
end
def publish_script(script_id) do
case Repo.get(Script, script_id) do
nil ->
{:error, :not_found}
script ->
file_path = script_file_path(script.slug)
full_path = full_file_path(script.project_id, file_path)
updated_at = System.system_time(:second)
content = script.content || ""
:ok = File.mkdir_p(Path.dirname(full_path))
:ok =
File.write(
full_path,
serialize_script_file(%{script | status: :published, file_path: file_path, updated_at: updated_at}, content)
)
script
|> Script.changeset(%{status: :published, file_path: file_path, content: nil, updated_at: updated_at})
|> Repo.update()
end
end
def update_script(script_id, attrs) do
case Repo.get(Script, script_id) do
nil ->
{:error, :not_found}
script ->
next_slug =
if has_attr?(attrs, :slug) do
unique_slug(script.project_id, Slug.slugify(attr(attrs, :slug)), "script", script.id)
else
script.slug
end
content_changed? = has_attr?(attrs, :content) and attr(attrs, :content) != script.content
now = System.system_time(:second)
updates = %{}
|> maybe_put(:title, attr(attrs, :title))
|> maybe_put(:kind, attr(attrs, :kind))
|> maybe_put(:entrypoint, attr(attrs, :entrypoint))
|> maybe_put(:enabled, attr(attrs, :enabled))
|> maybe_put(:content, attr(attrs, :content))
|> Map.put(:slug, next_slug)
|> Map.put(:version, script.version + 1)
|> Map.put(:updated_at, now)
|> maybe_put(:status, if(script.status == :published and content_changed?, do: :draft, else: nil))
script
|> Script.changeset(updates)
|> Repo.update()
end
end
def delete_script(script_id) do
case Repo.get(Script, script_id) do
nil ->
{:error, :not_found}
script ->
delete_file_if_present(script.project_id, script.file_path)
Repo.delete!(script)
{:ok, :deleted}
end
end
def rebuild_scripts_from_files(project_id) do
project = Projects.get_project!(project_id)
scripts =
project
|> Projects.project_data_dir()
|> Path.join("scripts")
|> list_matching_files("*.lua")
|> Enum.map(&upsert_script_from_file(project_id, project, &1))
{:ok, scripts}
end
defp default_entrypoint(:macro), do: "render"
defp default_entrypoint(_kind), do: "main"
defp unique_slug(project_id, base_slug, fallback, exclude_id \\ nil) do
normalized = if base_slug in [nil, ""], do: fallback, else: base_slug
if slug_available?(project_id, normalized, exclude_id) do
normalized
else
find_unique_slug(project_id, normalized, 2, exclude_id)
end
end
defp find_unique_slug(project_id, base_slug, suffix, exclude_id) do
candidate = "#{base_slug}-#{suffix}"
if slug_available?(project_id, candidate, exclude_id) do
candidate
else
find_unique_slug(project_id, base_slug, suffix + 1, exclude_id)
end
end
defp slug_available?(project_id, slug, exclude_id) do
query = from script in Script, where: script.project_id == ^project_id and script.slug == ^slug
scoped_query =
case exclude_id do
nil -> query
_id -> from script in query, where: script.id != ^exclude_id
end
not Repo.exists?(scoped_query)
end
defp script_file_path(slug), do: Path.join(["scripts", "#{slug}.lua"])
defp full_file_path(project_id, relative_path) do
project = Projects.get_project!(project_id)
Path.join(Projects.project_data_dir(project), relative_path)
end
defp serialize_script_file(script, content) do
Frontmatter.serialize_document(
[
{:id, script.id},
{:slug, script.slug},
{:title, script.title},
{:kind, script.kind},
{:entrypoint, script.entrypoint},
{:enabled, script.enabled},
{:version, script.version},
{:created_at, script.created_at},
{:updated_at, script.updated_at}
],
content
)
end
defp delete_file_if_present(_project_id, file_path) when file_path in [nil, ""], do: :ok
defp delete_file_if_present(project_id, file_path) do
full_path = full_file_path(project_id, file_path)
case File.rm(full_path) do
:ok -> :ok
{:error, :enoent} -> :ok
{:error, reason} -> {:error, reason}
end
end
defp upsert_script_from_file(project_id, project, path) do
contents = File.read!(path)
{:ok, %{fields: fields}} = Frontmatter.parse_document(contents)
relative_path = Path.relative_to(path, Projects.project_data_dir(project))
now = System.system_time(:second)
attrs = %{
id: Map.get(fields, "id") || Ecto.UUID.generate(),
project_id: project_id,
slug: Map.fetch!(fields, "slug"),
title: Map.get(fields, "title") || "",
kind: parse_script_kind(Map.fetch!(fields, "kind")),
entrypoint: Map.get(fields, "entrypoint") || "main",
enabled: Map.get(fields, "enabled", true),
version: Map.get(fields, "version", 1),
file_path: relative_path,
status: :published,
content: nil,
created_at: Map.get(fields, "created_at", now),
updated_at: Map.get(fields, "updated_at", now)
}
script = Repo.get_by(Script, project_id: project_id, slug: attrs.slug) || %Script{}
script
|> Script.changeset(attrs)
|> Repo.insert_or_update!()
end
defp parse_script_kind(kind) when is_atom(kind), do: kind
defp parse_script_kind("macro"), do: :macro
defp parse_script_kind("utility"), do: :utility
defp parse_script_kind("transform"), do: :transform
defp list_matching_files(dir, pattern) do
if File.dir?(dir) do
Path.join(dir, pattern)
|> Path.wildcard()
|> Enum.sort()
else
[]
end
end
defp maybe_put(map, _key, nil), do: map
defp maybe_put(map, key, value), do: Map.put(map, key, value)
defp has_attr?(attrs, key) do
Map.has_key?(attrs, key) or Map.has_key?(attrs, Atom.to_string(key))
end
defp attr(attrs, key) do
cond do
Map.has_key?(attrs, key) -> Map.get(attrs, key)
Map.has_key?(attrs, Atom.to_string(key)) -> Map.get(attrs, Atom.to_string(key))
true -> nil
end
end
end