#!/usr/bin/env ruby
#
# Adds a "Copy GoogleService-Info" Run Script Build Phase to the Runner target.
# The script copies ios/flavors/{flavor}/GoogleService-Info.plist to the .app
# bundle based on the build CONFIGURATION (Debug-development, Release-staging, etc.).
#
# Idempotent: if the build phase already exists, does nothing.
#
# Usage:
#   ruby ios/scripts/add-copy-google-service-build-phase.rb

require 'xcodeproj'

PROJECT_PATH = File.expand_path('../../Runner.xcodeproj', __FILE__)
TARGET_NAME = 'Runner'
PHASE_NAME = 'Copy GoogleService-Info'
SHELL_SCRIPT = '"${SRCROOT}/scripts/copy-google-service-plist.sh"'

project = Xcodeproj::Project.open(PROJECT_PATH)
target = project.targets.find { |t| t.name == TARGET_NAME }

unless target
  abort "ERROR: Target '#{TARGET_NAME}' not found in project."
end

# Check if the build phase already exists (idempotency)
existing = target.build_phases.find do |phase|
  phase.is_a?(Xcodeproj::Project::Object::PBXShellScriptBuildPhase) && phase.name == PHASE_NAME
end

if existing
  puts "OK: Build phase '#{PHASE_NAME}' already exists. No changes needed."
  exit 0
end

# Create the new build phase
phase = target.new_shell_script_build_phase(PHASE_NAME)
phase.shell_path = '/bin/sh'
phase.shell_script = SHELL_SCRIPT
phase.input_paths = []
phase.output_paths = []
phase.run_only_for_deployment_postprocessing = '0'

# Move it before the embed frameworks phase (or at the end if no such phase)
# Order: Sources -> Frameworks -> Resources -> ... -> ThinBinary -> CopyGoogleService -> EmbedPodsFrameworks -> CopyPodsResources
build_phases = target.build_phases

# Find the index of "Thin Binary" if it exists
thin_binary_idx = build_phases.find_index do |p|
  p.respond_to?(:name) && p.name == 'Thin Binary'
end

# Find the index of "[CP] Embed Pods Frameworks" if it exists
embed_pods_idx = build_phases.find_index do |p|
  p.respond_to?(:name) && p.name && p.name.include?('Embed Pods Frameworks')
end

# Remove the just-added phase from its current position (it gets appended at the end)
build_phases.delete(phase)

# Insert at the right spot
target_idx = if thin_binary_idx && embed_pods_idx && thin_binary_idx < embed_pods_idx
               # Place between Thin Binary and Embed Pods Frameworks
               embed_pods_idx
             elsif thin_binary_idx
               # Place right after Thin Binary
               thin_binary_idx + 1
             elsif embed_pods_idx
               # Place right before Embed Pods Frameworks
               embed_pods_idx
             else
               # Append at the end
               build_phases.length
             end

build_phases.insert(target_idx, phase)

project.save

puts "OK: Added build phase '#{PHASE_NAME}' at position #{target_idx}."
puts "Build phases order:"
target.build_phases.each_with_index do |p, i|
  name = p.respond_to?(:name) && p.name ? p.name : p.class.name
  puts "  #{i}: #{name}"
end