#!/bin/bash

# Script to install AWS SDK for PHP to an external location
# This prevents SDK from being deleted when WordPress updates the plugin
#
# Location: wp-content/aws-sdk/ (outside plugin folder)
#
# Uses the official single-file PHAR distribution from aws/aws-sdk-php releases.
# The PHAR ships its own composer-generated autoloader, so no PSR-4 wiring needed.

echo "Installing AWS SDK for PHP (latest) to external location..."
echo "This will install the SDK outside the plugin folder to survive plugin updates."

# Check if we can download files
if ! command -v curl &> /dev/null; then
    echo "ERROR: curl is required to download the SDK"
    echo "Please install curl and try again"
    exit 1
fi

# Get the script directory (plugin directory)
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Calculate wp-content directory (two levels up from plugin)
# Plugin is at: wp-content/plugins/twilio-wp-plugin/
# We want: wp-content/aws-sdk/
WP_CONTENT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
SDK_DIR="$WP_CONTENT_DIR/aws-sdk"

echo "Plugin directory: $SCRIPT_DIR"
echo "SDK will be installed to: $SDK_DIR"

# Create SDK directory
mkdir -p "$SDK_DIR"

# Download the latest PHAR release
echo "Downloading AWS SDK PHAR from GitHub..."
TEMP_DIR=$(mktemp -d)
cd "$TEMP_DIR"

if ! curl -L https://github.com/aws/aws-sdk-php/releases/latest/download/aws.phar -o aws.phar; then
    echo "ERROR: Failed to download AWS SDK PHAR"
    echo "Please check your internet connection and try again"
    rm -rf "$TEMP_DIR"
    exit 1
fi

# Verify the download is non-empty (PHAR is roughly 12 MB)
if [ ! -s "$TEMP_DIR/aws.phar" ]; then
    echo "ERROR: Downloaded AWS SDK PHAR is empty or missing"
    rm -rf "$TEMP_DIR"
    exit 1
fi

# Remove existing SDK if it exists
if [ -f "$SDK_DIR/aws.phar" ]; then
    echo "Removing existing AWS SDK installation..."
    rm -f "$SDK_DIR/aws.phar"
fi

# Move the PHAR into place
echo "Installing SDK files..."
if ! mv "$TEMP_DIR/aws.phar" "$SDK_DIR/aws.phar"; then
    echo "ERROR: Failed to move AWS SDK PHAR into place"
    rm -rf "$TEMP_DIR"
    exit 1
fi

# Create the autoloader shim
cat > "$SDK_DIR/autoload.php" << 'EOF'
<?php
/**
 * AWS SDK for PHP Autoloader (External Installation)
 * This file loads the AWS SDK via its bundled PHAR distribution.
 *
 * Location: wp-content/aws-sdk/autoload.php
 * This location survives WordPress plugin updates.
 *
 * The aws.phar file is the official single-file build from aws/aws-sdk-php
 * and ships with its own composer-generated autoloader, so all we need to
 * do is require_once the PHAR itself.
 */

// Prevent multiple registrations
if (!defined('TWP_AWS_AUTOLOADER_REGISTERED')) {
    define('TWP_AWS_AUTOLOADER_REGISTERED', true);

    // The PHAR contains its own autoloader stub; requiring it registers
    // the AWS\, Aws\, GuzzleHttp\, and supporting namespaces.
    $aws_phar = __DIR__ . '/aws.phar';
    if (file_exists($aws_phar)) {
        require_once $aws_phar;
    }
}
EOF

# Clean up temp directory
cd "$SCRIPT_DIR"
rm -rf "$TEMP_DIR"

# Verify installation
echo ""
echo "Verifying installation..."
if [ -f "$SDK_DIR/aws.phar" ] && [ -s "$SDK_DIR/aws.phar" ] && [ -f "$SDK_DIR/autoload.php" ]; then
    echo "=============================================="
    echo "AWS SDK for PHP installed successfully!"
    echo "=============================================="
    echo ""
    echo "Installation location: $SDK_DIR"
    echo ""
    echo "This SDK is installed OUTSIDE the plugin folder,"
    echo "so it will NOT be deleted when WordPress updates the plugin."
    echo ""
    echo "Next steps:"
    echo "  1. In WP admin, open the Twilio plugin Settings page."
    echo "  2. Switch SMS provider to \"Amazon SNS\"."
    echo "  3. Enter AWS Access Key, Secret Key, and Region (e.g. us-west-2)."
else
    echo "Installation failed - files not found"
    exit 1
fi