#!/usr/bin/env bash
#
# build-ios-client.sh — build the iOS SwiftUI client (VoiceCatiOS.app) for the
# iOS simulator and stage it into dist/ios-client/.
#
# Two steps:
#   1. Build VoiceCatCore.xcframework with all 3 slices (macOS + iOS device +
#      iOS simulator) via clients/apple/scripts/build-xcframework.sh --all.
#      The XCFramework must include the ios-arm64-simulator slice so the Swift
#      Package binary target resolves when xcodebuild compiles the iOS app.
#   2. xcodebuild the VoiceCatiOS target against the iOS Simulator SDK, with
#      SYMROOT and OBJROOT pointed at the same directory so the Swift Package
#      and the app target find each other's build products.
#
# Usage:
#   scripts/build-ios-client.sh                  # Debug sim build into ./dist
#   scripts/build-ios-client.sh --dist /out
#   scripts/build-ios-client.sh --no-configure   # skip cmake configure (xcframework step)
#   scripts/build-ios-client.sh --config Debug   # Xcode config (default Debug)
#   scripts/build-ios-client.sh -h|--help
#
# Output:
#   clients/apple/iOS/build/Debug-iphonesimulator/VoiceCatiOS.app
#   dist/ios-client/VoiceCatiOS.app
#
# To install and launch on a simulator after building, use:
#   scripts/run-ios-simulator.sh
#
# macOS only. Requires VCPKG_ROOT and Xcode (with iOS Simulator runtime installed).
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
VC_SCRIPT_NAME="build-ios-client"
source "$SCRIPT_DIR/common.sh"

DO_CONFIGURE=true
XCODE_CONFIG="Debug"
while [[ $# -gt 0 ]]; do
    case "$1" in
        --dist)         vc_set_dist "$2"; shift 2 ;;
        --no-configure) DO_CONFIGURE=false; shift ;;
        --config)       XCODE_CONFIG="$2"; shift 2 ;;
        -h|--help)      vc_print_help "$0"; exit 0 ;;
        *) vc_die "unknown arg: $1 (try --help)" ;;
    esac
done

vc_require_macos
vc_log "dist dir: $VC_DIST_DIR  config: $XCODE_CONFIG"

# ── Step 1: XCFramework (all slices) ──────────────────────────────────────────
# The iOS simulator build requires the ios-arm64-simulator slice, so we always
# build all three slices. --no-configure skips cmake configure but still runs
# cmake --build (which is fast with a warm build cache).
vc_step "build VoiceCatCore.xcframework (all slices: macOS + iOS device + iOS sim)"
XCFW_ARGS=( --all )
$DO_CONFIGURE || XCFW_ARGS+=( --no-configure )
"$VC_REPO_ROOT/clients/apple/scripts/build-xcframework.sh" "${XCFW_ARGS[@]}"
XCFW="$VC_REPO_ROOT/clients/apple/VoiceCatCore.xcframework"
[[ -d "$XCFW" ]] || vc_die "xcframework not found at $XCFW"
vc_ok "xcframework ready -> $XCFW"

# ── Step 2: xcodebuild for iOS Simulator ──────────────────────────────────────
# We use -target (not -scheme + -destination) to avoid the requirement of a
# matching simulator runtime in xcrun simctl. When using -target, xcodebuild
# skips destination resolution and builds directly against the requested SDK.
#
# SYMROOT and OBJROOT are both pinned to the same directory so the Swift Package
# (VoiceCatCore) and the app target (VoiceCatiOS) resolve each other's products.
# Without this, the package builds to clients/apple/build/ while the app target
# looks in clients/apple/iOS/build/ — the module import fails with "unable to
# resolve module dependency: 'VoiceCatCore'".
#
# CODE_SIGNING_ALLOWED=NO avoids provisioning-profile errors for local sim builds.
XCODEPROJ="$VC_REPO_ROOT/clients/apple/iOS/VoiceCatiOS.xcodeproj"
BUILD_DIR="$VC_REPO_ROOT/clients/apple/iOS/build"
SIM_SDK_VER="$(xcrun --sdk iphonesimulator --show-sdk-version 2>/dev/null)"
SIM_SDK="iphonesimulator${SIM_SDK_VER}"
vc_step "xcodebuild VoiceCatiOS ($XCODE_CONFIG / $SIM_SDK)"
xcodebuild \
    -project "$XCODEPROJ" \
    -target VoiceCatiOS \
    -sdk "$SIM_SDK" \
    -configuration "$XCODE_CONFIG" \
    CODE_SIGNING_ALLOWED=NO \
    ARCHS=arm64 \
    ONLY_ACTIVE_ARCH=YES \
    SYMROOT="$BUILD_DIR" \
    OBJROOT="$BUILD_DIR" \
    build

APP="$BUILD_DIR/${XCODE_CONFIG}-iphonesimulator/VoiceCatiOS.app"
[[ -d "$APP" ]] || vc_die "VoiceCatiOS.app not found at $APP"
vc_ok "built -> $APP"

# ── Stage ─────────────────────────────────────────────────────────────────────
vc_step "stage -> $VC_DIST_DIR/ios-client"
STAGE="$(vc_dist_subdir ios-client)"
cp -R "$APP" "$STAGE/"
vc_ok "VoiceCatiOS.app -> $STAGE/ ($(du -sh "$APP" | cut -f1))"
vc_ok "done -> $STAGE"