Plugin creation instructions

BUGSNAG-PLUGIN.md

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+Creating a Bugsnag Plugin
+=========================
+
+Making a plugin that plays nice with the major package managers can be tricky. Here's how to do it safely:
+
+
+Creating the Plugin
+-------------------
+
+#### Add a new target for your plugin:
+
+- Open `Bugsnag.xcworkspace`
+- Select the `Bugsnag` project
+- In the `Targets` pane, click `+`
+- Use the `Framework` template (ios)
+- Give it a name like `BugsnagXYZ`
+- Select the `BugsnagXYZ` target
+- Under `General` -> `Frameworks and Libraries`, click `+` and add the `Bugsnag.framework` for your architecture (ios)
+
+#### Apply fixups and workarounds:
+
+In the targets pane (`Bugsnag` project in the left pane, `Targets` list in the middle pane):
+- Rename the `BugsnagXYZ` target to `BugsnagXYZ-iOS`
+- Rename the `BugsnagXYZTests` target to `BugsnagXYZ-iOSTests`
+
+In the target's build settings (`Bugsnag` project in the left pane, `Targets` list in the middle pane, `BugsnagXYZ-iOS`, `Build Settings`):
+- Change `Product Name` from `BugsnagXYZ-iOS` to `BugsnagXYZ`
+
+In the schemes manager (Click the schemes selector in the middle pane -> `Manage Schemes`):
+- Rename the `BugsnagXYZ `scheme to `BugsnagXYZ-iOS`
+- Untick and re-tick the new scheme's `Shared` checkbox (this generates the needed .xcscheme file)
+- Click `+` and add the `BugsnagXYZ-iOSTests` target.
+
+#### You should now have:
+
+- New targets: `BugsnagXYZ-iOS` and `BugsnagXYZ-iOSTests`
+- New schemes: `BugsnagXYZ-iOS` and `BugsnagXYZ-iOSTests`
+- New top-level directories: `BugsnagXYZ` and `BugsnagXYZTests`
+
+#### Add your code:
+
+- Place all new code inside the `BugsnagXYZ` directory.
+- Make sure your new files have appropriate `BugsnagXYZ-nnn` membership in the right-side pane.
+- Create the directory `BugsnagXYZ/include/Bugsnag` and place all public headers in there.
+- Make sure all public headers are marked as public in the right-side pane (they're `Project` by default).
+- When importing from the main Bugsnag library, use angle bracket style (`#import <Bugsnag/whatever.h>`)
+
+#### Add other platform targets:
+
+You must also make targets and schemes for the other platforms (macOS, tvOS) pointing to the same `BugsnagXYZ` codebase, similar to what's done in the main Bugsnag library. Do so by creating a new `BugsnagXYZ` target for each platform, then renaming to e.g. `BugsnagXYZ-macOS` like you did for iOS, then updating existing source files to include membership in the new target.
+
+
+Supporting Carthage
+-------------------
+
+Carthage looks in your project for shared schemas, so everything should already be set up, and users should be able to reference the new plugin once you've pushed.
+
+### Using in a local testing app
+
+Use a `file://` reference in your tester app's Cartfile:
+
+```
+git "file:///path/to/bugsnag-cocoa" "my-exploratory-branch"
+```
+
+Then update Carthage: `carthage update --use-xcframeworks`
+
+Now add `Bugsnag.framework` and `BugsnagXYZ.framework` from `Carthage/Build/` to your project.
+
+**Note**: Carthage will only see changes that have been committed to your bugsnag-cocoa git repo!
+
+
+Supporting Swift Package Manager
+--------------------------------
+
+Modify `Package.swift`.
+
+Add a new entry to `products`:
+
+```
+        .library(name: "BugsnagXYZ", targets: ["BugsnagXYZ"]),
+```
+
+Add a new entry to `targets`:
+
+```
+        .target(
+            name: "BugsnagXYZ",
+            dependencies: ["Bugsnag"],
+            path: "BugsnagXYZ",
+            publicHeadersPath: "include",
+            cSettings: [
+                .headerSearchPath("."),
+                .headerSearchPath("include/Bugsnag"),
+            ]
+        ),
+```
+
+Once your changes are pushed, users can reference the new plugin.
+
+### Using in a local testing app
+
+1. Drag the `bugsnag-cocoa` folder (containing `Package.swift`) into the Navigator tab (left side) of your tester app project in xcode.
+2. In your app project's general settings, go to `Frameworks, Libraries, and Embedded Content`, click `+` and add the appropriate `Bugsnag` and `BugsnagXYZ` products.
+
+
+Supporting Cocoapods
+--------------------
+
+Create a `BugsnagXYZ.podspec` file similar to the existing `Bugsnag.podspec` file:
+
+```
+Pod::Spec.new do |s|
+  s.name             = 'BugsnagXYZ'
+  s.version          = '6.11.0'
+  s.summary          = 'Bugsnag XYZ plugin.'
+
+  s.description      = <<-DESC
+A plugin that does XYZ.
+                       DESC
+
+  s.homepage         = 'https://bugsnag.com'
+  s.license          = 'MIT'
+  s.authors          = { 'Bugsnag': 'notifiers@bugsnag.com' }
+
+  s.source           = {
+    :git => 'https://github.com/bugsnag/bugsnag-cocoa.git',
+    :tag => 'v' + s.version.to_s
+  }
+
+  s.ios.deployment_target = '9.3'
+  s.osx.deployment_target = '10.11'
+  s.tvos.deployment_target = '9.2'
+
+  s.cocoapods_version = '>= 1.4.0'
+
+  s.dependency 'Bugsnag', '~> ' + s.version.to_s
+
+  s.source_files = "BugsnagXYZ/{**/,}*.{m,h,mm,c}"
+  s.requires_arc = true
+  s.prefix_header_file = false
+  s.public_header_files = "BugsnagXYZ/include/Bugsnag/*.h"
+end
+```
+
+**Note**: The plugin podspec version must remain lockstep with the main `Bugsnag.podspec` version.
+
+### Using in a local testing app
+
+Make sure your testing app's `Podfile` has the following entries:
+
+```
+  pod 'Bugsnag', :path => "/path/to/bugsnag-cocoa"
+  pod 'BugsnagXYZ', :path => "/path/to/bugsnag-cocoa"
+```
+
+Then run `pod install` and open the generated .xcworkspace file