Firebase stage + Prod config

README

STEP 1.
Add a flag in the "Other Swift Flags" like -DENVConfigStaging to a debug target.
Now when you build this target you have a debug flag set, otherwise assume production.

STEP 2.
Add the staging and production GoogleService-Info.plist(s)

STEP 3.
Add a build phase script to look for the build flag and copy the appropriate GoogleService-Info.plist to the built .app before codesigning it


Doing this allows you to create a class like EnvConfig.swift to define env specific stuff

You can do the same thing with GCC preprocessor flags, etc.. if you don't swift

build phase script for firebase

SOURCE_DIR="${SRCROOT}/${PROJECT_NAME}"

if [ "${CONFIGURATION}" = "Release" ]
then
cp "$SOURCE_DIR/GoogleService-Info.release.plist" "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/GoogleService-Info.plist"
else
cp "$SOURCE_DIR/GoogleService-Info.debug.plist" "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/GoogleService-Info.plist"
fi

EnvConfig.swift

import Foundation


@objc(EnvConfig)
class EnvConfig: NSObject {

    #if ENVConfigStaging
    class var isProduction:Bool {
        return false
    }
    #else
    class var isProduction:Bool {
    return true
    }
    #endif
    
}