#!/bin/bash
# Demonstration of working alternative solution
# Shows complete Debian Atomic pipeline: debootstrap + ostree → bootable image

set -euo pipefail

echo "🚀 Debian Atomic Pipeline Demonstration"
echo "Using working alternative solution: debootstrap + ostree"
echo "=" * 60

# Configuration
WORKSPACE_PATH="/home/rob/Documents/Projects/overseer"
DEB_BOOTC_PATH="$WORKSPACE_PATH/deb-bootc-image-builder"
ATOMIC_CONFIGS_PATH="$WORKSPACE_PATH/debian-atomic-configs"

# Step 1: Create OSTree commit using alternative solution
echo
echo "Step 1: Creating OSTree commit using debootstrap + ostree"
echo "Running: create-debian-atomic.py minimal"

cd "$ATOMIC_CONFIGS_PATH"

# Run the alternative solution with a persistent work directory
WORK_DIR="/tmp/debian-atomic-demo"
if [[ -d "$WORK_DIR" ]]; then
    rm -rf "$WORK_DIR"
fi

echo "Creating persistent build in: $WORK_DIR"
if distrobox-enter debian-trixie -- bash -c "cd '$ATOMIC_CONFIGS_PATH' && sudo python3 create-debian-atomic.py minimal '$WORK_DIR'"; then
    echo "✅ Step 1 completed: OSTree commit created successfully"
else
    echo "❌ Step 1 failed"
    exit 1
fi

# Step 2: Verify the repository and commit
echo
echo "Step 2: Verifying OSTree repository and commit"

REPO_PATH="$WORK_DIR/repo"
if [[ ! -d "$REPO_PATH" ]]; then
    echo "❌ Repository not found at $REPO_PATH"
    exit 1
fi

echo "✅ Repository found at: $REPO_PATH"

# List references
echo "Repository references:"
ostree refs --repo="$REPO_PATH" || echo "No references found"

# List commits
echo "Repository commits:"
find "$REPO_PATH/objects" -type d -name "????????????????????????????????????????????????????????????????" 2>/dev/null | head -5 || echo "No commits found"

# Step 3: Extract rootfs from OSTree commit
echo
echo "Step 3: Extracting rootfs from OSTree commit"

ROOTFS_PATH="/tmp/debian-atomic-rootfs"
if [[ -d "$ROOTFS_PATH" ]]; then
    rm -rf "$ROOTFS_PATH"
fi

# Get the reference
REF_FILE=$(find "$REPO_PATH/refs" -type f | head -1)
if [[ -z "$REF_FILE" ]]; then
    echo "❌ No reference found"
    exit 1
fi

COMMIT_ID=$(cat "$REF_FILE")
echo "Using commit: $COMMIT_ID"

# Extract rootfs
echo "Extracting rootfs to: $ROOTFS_PATH"
if ostree checkout --repo="$REPO_PATH" --subpath=/ "$COMMIT_ID" "$ROOTFS_PATH"; then
    echo "✅ Rootfs extracted successfully"
else
    echo "❌ Failed to extract rootfs"
    exit 1
fi

# Verify rootfs structure
if [[ -d "$ROOTFS_PATH/usr" ]] && [[ -d "$ROOTFS_PATH/etc" ]]; then
    echo "✅ Rootfs structure verified"
else
    echo "❌ Invalid rootfs structure"
    exit 1
fi

# Step 4: Create bootable image
echo
echo "Step 4: Creating bootable image using deb-bootc-image-builder"

# Build deb-bootc-image-builder if needed
BIB_BIN="$DEB_BOOTC_PATH/bib/create-ostree-bootable-image"
if [[ ! -f "$BIB_BIN" ]]; then
    echo "Building deb-bootc-image-builder..."
    cd "$DEB_BOOTC_PATH"
    if ! go build -o bib/create-ostree-bootable-image ./bib/create-ostree-bootable-image.go; then
        echo "❌ Failed to build deb-bootc-image-builder"
        exit 1
    fi
    echo "✅ deb-bootc-image-builder built successfully"
fi

# Create bootable image
OUTPUT_IMAGE="/tmp/debian-atomic-minimal.img"
echo "Creating bootable image: $OUTPUT_IMAGE"

if "$BIB_BIN" "$ROOTFS_PATH" "$OUTPUT_IMAGE"; then
    echo "✅ Bootable image created successfully"
    
    # Show image information
    if [[ -f "$OUTPUT_IMAGE" ]]; then
        IMAGE_SIZE=$(du -h "$OUTPUT_IMAGE" | cut -f1)
        echo "Image size: $IMAGE_SIZE"
        
        # Copy to workspace
        FINAL_IMAGE="$WORKSPACE_PATH/debian-atomic-minimal-demo.img"
        cp "$OUTPUT_IMAGE" "$FINAL_IMAGE"
        echo "Image copied to: $FINAL_IMAGE"
        
        echo
        echo "🎉 Pipeline completed successfully!"
        echo
        echo "📋 Summary:"
        echo "✅ OSTree commit created using debootstrap + ostree"
        echo "✅ Rootfs extracted from OSTree commit"
        echo "✅ Bootable image created: $FINAL_IMAGE"
        echo
        echo "🧪 To test the image:"
        echo "qemu-system-x86_64 -m 2G -drive file=$FINAL_IMAGE,format=raw -nographic"
        
    else
        echo "❌ Output image not found"
        exit 1
    fi
else
    echo "❌ Failed to create bootable image"
    exit 1
fi

echo
echo "🔍 Repository details:"
echo "Repository: $REPO_PATH"
echo "Commit: $COMMIT_ID"
echo "Rootfs: $ROOTFS_PATH"
echo "Image: $OUTPUT_IMAGE"

echo
echo "💡 This demonstrates that the alternative solution (debootstrap + ostree)"
echo "   is fully functional and can generate bootable images, bypassing the"
echo "   apt-ostree integration issues."