#!/bin/bash

# update.sh - Unzips a new NavidromePlayer.zip and replaces all project files
# while preserving your .git history.
# 
# Usage: Place this script in your NavidromePlayer/ root directory.
# Drop the new NavidromePlayer.zip in the SAME directory.
# Ensure your custom 1024.png is in the SAME directory.
# Then run: ./update.sh

set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$SCRIPT_DIR"

ZIP_FILE="NavidromePlayer.zip"
ICON_FILE="AppIcon.png"

# Check zip exists
if [ ! -f "$ZIP_FILE" ]; then
    echo "❌ $ZIP_FILE not found in $(pwd)"
    echo "   Drop the zip file here and run again."
    exit 1
fi

# Check we're in a git repo
if [ ! -d ".git" ]; then
    echo "❌ No .git directory found. Run this from your NavidromePlayer repo root."
    exit 1
fi

echo "📦 Updating NavidromePlayer from $ZIP_FILE"
echo ""

# Step 1: Auto-commit any uncommitted work
if [ -n "$(git status --porcelain)" ]; then
    echo "💾 Committing your uncommitted changes first..."
    git add -A
    git commit -m "Auto-commit before update ($(date '+%Y-%m-%d %H:%M'))"
    echo ""
fi

# Step 2: Delete everything except .git, scripts, zip, and the custom icon
echo "🗑  Removing old project files..."
find . -maxdepth 1 \
    -not -name '.' \
    -not -name '.git' \
    -not -name "$ZIP_FILE" \
    -not -name 'update.sh' \
    -not -name "$ICON_FILE" \
    -exec rm -rf {} \;

# Step 3: Unzip
echo "📂 Extracting $ZIP_FILE..."
unzip -q -o "$ZIP_FILE"

# Move files out of the NavidromePlayer/ wrapper folder
if [ -d "NavidromePlayer" ]; then
    # Use rsync to handle dotfiles properly
    shopt -s dotglob
    mv NavidromePlayer/* . 2>/dev/null || true
    shopt -u dotglob
    rmdir NavidromePlayer 2>/dev/null || rm -rf NavidromePlayer
fi

# Step 4: Copy custom app icon into the newly extracted targets
if [ -f "$ICON_FILE" ]; then
    echo "🖼  Applying $ICON_FILE to iOS and watchOS AppIcon sets..."
    
    IOS_ICON_DIR="iOS/Resources/Assets.xcassets/AppIcon.appiconset"
    WATCH_ICON_DIR="watchOS/Resources/Assets.xcassets/AppIcon.appiconset"
    
    if [ -d "$IOS_ICON_DIR" ]; then
        cp "$ICON_FILE" "$IOS_ICON_DIR/"
    fi
    
    if [ -d "$WATCH_ICON_DIR" ]; then
        cp "$ICON_FILE" "$WATCH_ICON_DIR/"
    fi
else
    echo "⚠️  $ICON_FILE not found in root directory. Skipping icon copy."
fi

# Step 5: Show diff
echo ""
echo "📊 Changes:"
git add -A
git diff --cached --stat
echo ""

# Step 6: Count changes and prompt for commit message
CHANGED=$(git diff --cached --numstat | wc -l | tr -d ' ')

if [ "$CHANGED" -eq "0" ]; then
    echo "✅ No changes - you're already up to date."
    git reset HEAD . > /dev/null 2>&1
else
    # Prompt user for a commit message
    echo "📝 Enter a commit message for these $CHANGED changed files."
    read -p "   (Or press Enter to use the default message): " CUSTOM_MSG
    echo ""

    # If the user pressed enter without typing anything, use the default
    if [ -z "$CUSTOM_MSG" ]; then
        CUSTOM_MSG="Update from NavidromePlayer.zip ($(date '+%Y-%m-%d %H:%M'))"
    fi

    # Commit
    echo "💾 Committing..."
    git commit -m "$CUSTOM_MSG"
    echo ""
    echo "✅ Done! Latest commits:"
    git log --oneline -5
fi

echo ""
echo "🔨 Don't forget to run: ./generate.sh"