#!/bin/bash
# MCP Bridge Installation Diagnostic Script
# Run this manually in HA terminal to see what's happening

echo "=== MCP Bridge Installation Diagnostic ==="
echo ""

# 1. Check network connectivity
echo "1. Testing Gitea connectivity..."
GITEA_URL="${GITEA_URL:-https://www.git.quarantinedstudio.com}"
REPO="${REPO:-mvezina/homeassistant-mcp-bridge}"

echo "   Attempting to reach: $GITEA_URL/$REPO"
if curl -I "$GITEA_URL/$REPO" 2>&1 | head -n 1; then
    echo "   ✓ Can reach Gitea server"
else
    echo "   ✗ Cannot reach Gitea server"
    echo "   Please check:"
    echo "     - Is Gitea running?"
    echo "     - Is the URL correct?"
    echo "     - Can HA reach your Gitea server?"
fi
echo ""

# 2. Check if curl exists
echo "2. Checking for curl..."
if command -v curl &> /dev/null; then
    echo "   ✓ curl is available: $(which curl)"
    curl --version | head -n 1
else
    echo "   ✗ curl is NOT available"
    echo "   Checking for wget..."
    if command -v wget &> /dev/null; then
        echo "   ✓ wget is available: $(which wget)"
    else
        echo "   ✗ Neither curl nor wget available!"
    fi
fi
echo ""

# 3. Check config directory
echo "3. Checking config directory..."
CONFIG_DIR="/config"
if [ -d "$CONFIG_DIR" ]; then
    echo "   ✓ /config exists"
else
    echo "   ✗ /config does not exist, trying alternate..."
    CONFIG_DIR="${HOME}/.homeassistant"
    if [ -d "$CONFIG_DIR" ]; then
        echo "   ✓ Using $CONFIG_DIR"
    else
        echo "   ✗ Cannot find config directory!"
    fi
fi
echo ""

# 4. Check/create custom_components directory
echo "4. Checking custom_components directory..."
CUSTOM_DIR="$CONFIG_DIR/custom_components"
if [ -d "$CUSTOM_DIR" ]; then
    echo "   ✓ $CUSTOM_DIR exists"
else
    echo "   ! $CUSTOM_DIR does not exist, creating..."
    mkdir -p "$CUSTOM_DIR" && echo "   ✓ Created successfully" || echo "   ✗ Failed to create"
fi
echo ""

# 5. Check write permissions
echo "5. Checking write permissions..."
TEST_FILE="$CUSTOM_DIR/test_write_$$"
if touch "$TEST_FILE" 2>/dev/null; then
    echo "   ✓ Can write to $CUSTOM_DIR"
    rm "$TEST_FILE"
else
    echo "   ✗ Cannot write to $CUSTOM_DIR"
    echo "   Permission issue!"
fi
echo ""

# 6. Try downloading a test file
echo "6. Testing file download..."
BRANCH="${BRANCH:-main}"
TEST_URL="$GITEA_URL/$REPO/raw/branch/$BRANCH/custom_components/mcp_bridge/manifest.json"
echo "   URL: $TEST_URL"

TEMP_FILE="/tmp/mcp_test_$$"
if curl -fsSL "$TEST_URL" -o "$TEMP_FILE" 2>/dev/null; then
    echo "   ✓ Successfully downloaded test file"
    echo "   File size: $(wc -c < "$TEMP_FILE") bytes"
    echo "   First line: $(head -n 1 "$TEMP_FILE")"
    rm "$TEMP_FILE"
else
    echo "   ✗ Failed to download test file"
    echo "   Possible issues:"
    echo "     - Wrong repository name or path"
    echo "     - Wrong branch name"
    echo "     - File doesn't exist at that path"
    echo "     - Network/firewall blocking"
fi
echo ""

# 7. Check existing installation
echo "7. Checking for existing installation..."
INSTALL_DIR="$CONFIG_DIR/custom_components/mcp_bridge"
if [ -d "$INSTALL_DIR" ]; then
    echo "   ✓ Installation directory exists: $INSTALL_DIR"
    echo "   Files:"
    ls -lh "$INSTALL_DIR" 2>/dev/null || echo "   (empty or cannot list)"
    
    if [ -f "$INSTALL_DIR/manifest.json" ]; then
        VERSION=$(grep -oP '"version":\s*"\K[^"]+' "$INSTALL_DIR/manifest.json" 2>/dev/null || echo "unknown")
        echo "   Current version: $VERSION"
    fi
else
    echo "   ! Installation directory does not exist yet"
fi
echo ""

# 8. Provide installation command
echo "8. Suggested installation command:"
echo ""
echo "   export GITEA_URL=\"$GITEA_URL\""
echo "   export REPO=\"$REPO\""
echo "   export BRANCH=\"$BRANCH\""
echo "   curl -fsSL \"\$GITEA_URL/\$REPO/raw/branch/\$BRANCH/quick_install.sh\" | bash"
echo ""
echo "=== Diagnostic Complete ==="
echo ""
echo "If all checks passed, run the installation command above."
echo "If checks failed, fix the issues indicated and try again."