#!/usr/bin/env ruby
# configure_xcode.rb — stamped fresh from template on every build (see gitea.service.ts)
#
# 1. Adds GoogleService-Info.plist to the Xcode target if present (xcodeproj gem)
# 2. Scans Swift sources for Firebase imports and injects matching products into
#    CapApp-SPM/Package.swift — the correct approach for Capacitor SPM projects
#    where all native linking goes through CapApp-SPM, not App.xcodeproj directly.

require 'xcodeproj'

PROJECT_PATH     = 'ios/App/App.xcodeproj'
TARGET_NAME      = 'App'
PLIST_SRC        = 'ios/App/App/GoogleService-Info.plist'
CAP_APP_SPM      = 'ios/App/CapApp-SPM/Package.swift'
FIREBASE_SDK_URL = 'https://github.com/firebase/firebase-ios-sdk'
FIREBASE_SDK_PKG = 'firebase-ios-sdk'
FIREBASE_SDK_VER = '11.0.0'

# ── 1. GoogleService-Info.plist ───────────────────────────────────────────────
if File.exist?(PLIST_SRC)
  project = Xcodeproj::Project.open(PROJECT_PATH)
  target  = project.targets.find { |t| t.name == TARGET_NAME }
  if target
    app_group = project.main_group['App']
    unless app_group&.files&.find { |f| f.path == 'GoogleService-Info.plist' }
      file_ref = app_group.new_reference('GoogleService-Info.plist')
      target.resources_build_phase.add_file_reference(file_ref)
      project.save
      puts "Added GoogleService-Info.plist to target"
    end
  end
end

# ── 2. Scan Swift sources for Firebase imports ────────────────────────────────
swift_files      = Dir['ios/App/App/**/*.swift']
firebase_imports = swift_files
  .flat_map { |f| File.readlines(f) rescue [] }
  .grep(/^\s*import\s+Firebase\w+/)
  .map  { |l| l.strip.split(/\s+/).last }
  .uniq
  .sort

if firebase_imports.empty?
  puts "No Firebase imports found — skipping CapApp-SPM update"
  exit 0
end

puts "Firebase imports detected: #{firebase_imports.join(', ')}"

unless File.exist?(CAP_APP_SPM)
  warn "WARNING: #{CAP_APP_SPM} not found — was cap sync run?"
  exit 0
end

lines = File.read(CAP_APP_SPM).split("\n")

# ── 3. Inject firebase-ios-sdk as a direct package dependency if missing ──────
unless lines.any? { |l| l.include?(FIREBASE_SDK_URL) }
  last_pkg_idx = lines.rindex { |l| l.include?('.package(') }
  if last_pkg_idx
    lines[last_pkg_idx] = lines[last_pkg_idx].rstrip
    lines[last_pkg_idx] += ',' unless lines[last_pkg_idx].end_with?(',')
    lines.insert(last_pkg_idx + 1,
      "        .package(url: \"#{FIREBASE_SDK_URL}\", from: \"#{FIREBASE_SDK_VER}\")")
    puts "Added #{FIREBASE_SDK_PKG} to CapApp-SPM package dependencies"
  else
    warn "WARNING: could not find a .package( line to insert after in #{CAP_APP_SPM}"
  end
end

# ── 4. Inject each detected product into the target dependencies if missing ───
firebase_imports.each do |product|
  next if product == 'Firebase' # umbrella import — not a linkable SPM product

  product_str = ".product(name: \"#{product}\", package: \"#{FIREBASE_SDK_PKG}\")"
  next if lines.any? { |l| l.include?(product_str) }

  last_prod_idx = lines.rindex { |l| l.include?('.product(') }
  if last_prod_idx
    lines[last_prod_idx] = lines[last_prod_idx].rstrip
    lines[last_prod_idx] += ',' unless lines[last_prod_idx].end_with?(',')
    lines.insert(last_prod_idx + 1, "                #{product_str}")
    puts "Added #{product} to CapApp-SPM target dependencies"
  else
    warn "WARNING: could not find a .product( line to insert after in #{CAP_APP_SPM}"
  end
end

File.write(CAP_APP_SPM, lines.join("\n"))
puts "CapApp-SPM/Package.swift updated"