#!/usr/bin/env bash
set -euo pipefail

# Bannerlord Runtime Verification — Apple Silicon
# Issue #720: Verify the local Windows game runtime for Bannerlord
#
# Usage: ./scripts/bannerlord_verify_runtime.sh

BOTTLE_NAME="Bannerlord"
BOTTLE_DIR="$HOME/Library/Application Support/Whisky/Bottles/$BOTTLE_NAME"
REPORT_FILE="/tmp/bannerlord_runtime_verify.txt"

PASS=0
FAIL=0
WARN=0

check() {
    local label="$1"
    local result="$2"  # PASS, FAIL, WARN
    local detail="${3:-}"
    case "$result" in
        PASS) ((PASS++)) ; echo "[PASS] $label${detail:+ — $detail}" ;;
        FAIL) ((FAIL++)) ; echo "[FAIL] $label${detail:+ — $detail}" ;;
        WARN) ((WARN++)) ; echo "[WARN] $label${detail:+ — $detail}" ;;
    esac
    echo "$result: $label${detail:+ — $detail}" >> "$REPORT_FILE"
}

echo "=== Bannerlord Runtime Verification ===" | tee "$REPORT_FILE"
echo "Date: $(date -u '+%Y-%m-%dT%H:%M:%SZ')" | tee -a "$REPORT_FILE"
echo "Platform: $(uname -m) macOS $(sw_vers -productVersion)" | tee -a "$REPORT_FILE"
echo "" | tee -a "$REPORT_FILE"

# ── Check 1: Whisky installed ────────────────────────────────────
if [[ -d "/Applications/Whisky.app" ]]; then
    VER=$(defaults read "/Applications/Whisky.app/Contents/Info.plist" CFBundleShortVersionString 2>/dev/null || echo "?")
    check "Whisky installed" "PASS" "v$VER at /Applications/Whisky.app"
else
    check "Whisky installed" "FAIL" "not found at /Applications/Whisky.app"
fi

# ── Check 2: Bottle exists ───────────────────────────────────────
if [[ -d "$BOTTLE_DIR" ]]; then
    check "Bannerlord bottle exists" "PASS" "$BOTTLE_DIR"
else
    check "Bannerlord bottle exists" "FAIL" "missing: $BOTTLE_DIR"
fi

# ── Check 3: drive_c structure ───────────────────────────────────
if [[ -d "$BOTTLE_DIR/drive_c" ]]; then
    check "Bottle drive_c populated" "PASS"
else
    check "Bottle drive_c populated" "FAIL" "drive_c not found — bottle may need Wine init"
fi

# ── Check 4: Steam (Windows) ─────────────────────────────────────
STEAM_EXE="$BOTTLE_DIR/drive_c/Program Files (x86)/Steam/Steam.exe"
if [[ -f "$STEAM_EXE" ]]; then
    check "Steam (Windows) installed" "PASS" "$STEAM_EXE"
else
    check "Steam (Windows) installed" "FAIL" "not found at expected path"
fi

# ── Check 5: Bannerlord executable ───────────────────────────────
BANNERLORD_EXE="$BOTTLE_DIR/drive_c/Program Files (x86)/Steam/steamapps/common/Mount & Blade II Bannerlord/bin/Win64_Shipping_Client/Bannerlord.exe"
if [[ -f "$BANNERLORD_EXE" ]]; then
    EXE_SIZE=$(stat -f%z "$BANNERLORD_EXE" 2>/dev/null || echo "?")
    check "Bannerlord executable found" "PASS" "size: $EXE_SIZE bytes"
else
    check "Bannerlord executable found" "FAIL" "not installed yet"
fi

# ── Check 6: GPTK/D3DMetal presence ──────────────────────────────
# D3DMetal libraries should be present in the Whisky GPTK installation
GPTK_DIR="$HOME/Library/Application Support/Whisky"
if [[ -d "$GPTK_DIR" ]]; then
    GPTK_FILES=$(find "$GPTK_DIR" -name "*gptk*" -o -name "*d3dmetal*" -o -name "*dxvk*" 2>/dev/null | head -5)
    if [[ -n "$GPTK_FILES" ]]; then
        check "GPTK/D3DMetal libraries" "PASS"
    else
        check "GPTK/D3DMetal libraries" "WARN" "not found — may need Whisky update"
    fi
else
    check "GPTK/D3DMetal libraries" "WARN" "Whisky support dir not found"
fi

# ── Check 7: Homebrew (for updates) ──────────────────────────────
if command -v brew &>/dev/null; then
    check "Homebrew available" "PASS" "$(brew --version | head -1)"
else
    check "Homebrew available" "WARN" "not found — manual updates required"
fi

# ── Check 8: macOS version ───────────────────────────────────────
MACOS_VER=$(sw_vers -productVersion)
MACOS_MAJOR=$(echo "$MACOS_VER" | cut -d. -f1)
if [[ "$MACOS_MAJOR" -ge 14 ]]; then
    check "macOS version" "PASS" "$MACOS_VER (Sonoma+)"
else
    check "macOS version" "FAIL" "$MACOS_VER — requires macOS 14+"
fi

# ── Summary ───────────────────────────────────────────────────────
echo "" | tee -a "$REPORT_FILE"
echo "=== Results ===" | tee -a "$REPORT_FILE"
echo "PASS: $PASS" | tee -a "$REPORT_FILE"
echo "FAIL: $FAIL" | tee -a "$REPORT_FILE"
echo "WARN: $WARN" | tee -a "$REPORT_FILE"
echo "Report: $REPORT_FILE" | tee -a "$REPORT_FILE"

if [[ "$FAIL" -gt 0 ]]; then
    echo "STATUS: INCOMPLETE — $FAIL check(s) failed" | tee -a "$REPORT_FILE"
    exit 1
else
    echo "STATUS: RUNTIME READY" | tee -a "$REPORT_FILE"
    exit 0
fi