One Xcode project contains multi Targets with Cocoapods

Question

I have an iOS project X which have several targets, these targets have different bundle IDs, APP names, APP icons, launch screens but share one pod MyBusinessLogicPod (which contains most business logic source code and different image resources. I define some macros to judge which target I am building for, such as TARGET_A_MACRO,TARGET_B_MACRO

#if defined(TARGET_A_MACRO)

static NSString *kAPPID = @"123456";
static NSInteger kChannel = 1;

#elif defined(TARGET_B_MACRO)

static NSString *kAPPID = @"789";
static NSInteger kChannel = 2;

#endif

Question 1: How can I load different image resources in podspec file according to X's target, Different targets do share this pod, but we don't wanna pack Target B's resource into Target A's bundle.

Question 2: Is it possible that we do pod install once, and all targets' macro are set, so I can build different targets directly. My Podfile didn't work.

Question 3: Any better solutions for my scenario？

My podfile:

platform :ios, '12.0'

def shared_pods
  pod 'AFNetworking'
  pod 'Masonry'
  pod 'MyBusinessLogicPod'
end

target 'TargetA' do
  shared_pods
end

target 'TargetB' do
  shared_pods
end

post_install do |installer|
  
  project_path = Pathname.pwd.children.select { |pn| pn.extname == '.xcodeproj' }.first
  puts "Main Target xcodeproj path: #{project_path}"
  xcproj_objc = Xcodeproj::Project.open(project_path)
  
  xcproj_objc.targets.each do |xctarget|
    
    puts "xctarget.name: #{xctarget.name}"
    if xctarget.name == 'TargetA'
      puts "xctarget.name1: #{xctarget.name}"

      installer.pods_project.targets.each do |target|
        target.build_configurations.each do |config|
          if config.name == 'Release'
            config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)', 'TARGET_A_MACRO=1']
          elsif config.name == 'Debug'
            config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)', 'TARGET_A_MACRO=1']
          end
          end
        end
    elsif xctarget.name = 'TargetB'
       puts "xctarget.name2: #{xctarget.name}"
       installer.pods_project.targets.each do |target|
          target.build_configurations.each do |config|
            if config.name == 'Release'
              config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)', 'TARGET_B_MACRO=1']
            elsif config.name == 'Debug'
              config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ['$(inherited)', 'TARGET_B_MACRO=1']
            end
            end
          end
          
        end
      end
    end