Safe{Wallet} iOS app

Safe Multisig iOS app.

Coding Style

As of 18.03.2021, this project adopted the Google's Swift Style Guide as well as Apple's Swift API Design Guidelines.

We adopt the following modifications to the above guidelines:

• 4-space indentation instead of 2-space
• Line wrapping at 120 characters

Inconsistencies and differences between the project's source code and the aforementioned guidelines shall be corrected as a by-product of the normal work on feature development and bug fixes.

Notable differences that we should look for:

• alphabetical sorting of import statements
• separation of testable import with blank line
• one statement per line
• trailing commas after last array or dictionary element
• Add documentation to every (public) declaration.
• Delegate methods: first object is the source.
• force-try! Is forbidden except in unit test, test-only code, or in case of programmer error.
• Force-unwrap and force-cast is strongly discouraged (except unit tests or programmer error).
• Implicitly unwrapped optionals should be avoided whenever possible.
  • Except in @IBOutlet, Objective-C APIs, unit tests or programmer error.
• Access level is specified on each member of the extension (if it is not default).
• Graphical playground literals - use only in Playgrounds, not in code.

Configuration

In order for the app to be functional, you need to create the protected configuration file with API keys in it (at least the INFURA_API_KEY).

You can find an example of unprotected configuration file at Multisig/Cross-layer/Configurations/apis-staging.example.json

You then encrypt that file using the secconfig tool:

$> bin/secconfig encrypt Multisig/Cross-layer/Configurations/apis-staging.example.json Multisig/Cross-layer/Configuration/apis.bundle/apis-staging.enc.json
<TOOL OUTPUT ENDING WITH '='>

The tool outputs the encryption key with which the configuration was encrypted. Export that value as an environment variable $> export CONFIG_KEY_STAGING="..."

Then, repeat the same for the production environment (in that case the files would be named apis-prod.example.json and apis-prod.enc.json, and the environment variable is CONFIG_KEY_PROD).

NOTE: Do not commit unencrypted files with real API keys apis-staging.exmaple.json or apis-prod.example.json to git! Otherwise you will compromise them.

You can find more details about the secconfig tool in the script Pakcages/SecureConfig/Sources/secconfig/main.swift

Optional. If you use the encrypted Firebase.dat configuration, provide the encryption key as environment variable.

$> export ENCRYPTION_KEY="..."

The app will work without it, so that step can be skipped.

Then, run the configure script to install the Config.xcconfig

$> bin/configure.sh

Now you are ready to build the project.

Documentation

Documentation is in the docs folder.