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mob_dev
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Development tooling for the Mob mobile framework
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lib/mob_dev/config.ex
defmodule MobDev.Config do
@moduledoc false
# Shared config helpers used across deployer, connector, native_build, and
# battery bench tasks.
@doc """
Returns the app's bundle ID / Android package name.
Resolution order:
1. `mob.exs` — `config :mob_dev, bundle_id: "..."` (opt-in override;
not required — projects work fine without it)
2. `ios/Info.plist` — `CFBundleIdentifier`
3. `android/app/build.gradle` — `applicationId`
4. Generated default: `"<MOB_BUNDLE_PREFIX or com.example>.<app_name>"`
The four-level fallback exists so cross-platform tasks (e.g. `mix mob.deploy`)
always have a value to work with, regardless of which platform's manifest is
authoritative for the project. For most users, the value resolved at step 2
or 3 is what `mix mob.new` wrote there at generation time; mob.exs is
reserved for explicit overrides.
"""
@spec bundle_id() :: String.t()
def bundle_id do
load_mob_config()[:bundle_id] ||
detect_from_ios_plist() ||
detect_from_android_gradle() ||
"#{bundle_prefix()}.#{app_name()}"
end
# Default reverse-DNS prefix when no platform manifest is available. Honors
# MOB_BUNDLE_PREFIX so users with a corporate prefix can set it once.
# Mirrors MobNew.ProjectGenerator.bundle_prefix/0 so the generator's default
# and the runtime fallback agree.
defp bundle_prefix do
case System.get_env("MOB_BUNDLE_PREFIX") do
nil -> "com.example"
"" -> "com.example"
raw -> String.trim(raw)
end
end
@doc """
Reads the `mob_dev` section from `mob.exs` in the current directory.
Returns an empty keyword list if the file does not exist.
"""
@spec load_mob_config() :: keyword()
def load_mob_config do
config_file = Path.join(File.cwd!(), "mob.exs")
if File.exists?(config_file),
do: Config.Reader.read!(config_file) |> Keyword.get(:mob_dev, []),
else: []
end
# ── Private ──────────────────────────────────────────────────────────────────
defp detect_from_ios_plist do
plist = Path.join([File.cwd!(), "ios", "Info.plist"])
with true <- File.exists?(plist),
{:ok, content} <- File.read(plist),
[_, id] <-
Regex.run(
Regex.compile!("<key>CFBundleIdentifier</key>\\s*<string>([^<]+)</string>"),
content
) do
id
else
_ -> nil
end
end
defp detect_from_android_gradle do
gradle = Path.join([File.cwd!(), "android", "app", "build.gradle"])
with true <- File.exists?(gradle),
{:ok, content} <- File.read(gradle),
match when match != nil <-
Regex.run(Regex.compile!("applicationId\\s+[\"']([^\"']+)[\"']"), content) ||
Regex.run(Regex.compile!("applicationId\\s*=\\s*[\"']([^\"']+)[\"']"), content) do
Enum.at(match, 1)
else
_ -> nil
end
end
defp app_name, do: Mix.Project.config()[:app] |> to_string()
end