#!/bin/bash

# Don't use set -e because we want to handle errors ourselves
# set -e 

echo "Building Runner - Dropshell Command Execution Library"
echo "===================================================="

# Create build directory if it doesn't exist
mkdir -p build || {
    echo "ERROR: Failed to create build directory"
    exit 1
}
cd build

# Check if pkg-config is available and can find libssh
if command -v pkg-config &> /dev/null && pkg-config --exists libssh; then
    # If libssh is found through pkg-config, use it
    LIBSSH_PREFIX=$(pkg-config --variable=prefix libssh)
    echo "Found libssh through pkg-config at: $LIBSSH_PREFIX"
    CMAKE_ARGS="-DCMAKE_PREFIX_PATH=$LIBSSH_PREFIX"
else
    # Otherwise, let CMake try to find it
    CMAKE_ARGS=""
    
    # Check if libssh-dev/libssh-devel is installed
    if [ ! -f "/usr/include/libssh/libssh.h" ] && [ ! -f "/usr/local/include/libssh/libssh.h" ]; then
        echo "WARNING: libssh development headers not found in standard locations."
        echo "You may need to install the libssh development package:"
        echo "  - Ubuntu/Debian: sudo apt install libssh-dev"
        echo "  - CentOS/RHEL: sudo yum install libssh-devel"
        echo "  - macOS: brew install libssh"
        echo ""
        echo "Continuing build anyway, but it may fail..."
        echo ""
        
        # Offer to run the find_libssh.sh helper script
        if [ -x "../examples/find_libssh.sh" ]; then
            echo "Would you like to run the libssh finder helper script? (y/n)"
            read -r answer
            if [[ "$answer" =~ ^[Yy] ]]; then
                cd ..
                ./examples/find_libssh.sh
                cd build
                echo ""
                echo "Continuing with build..."
            fi
        fi
    fi
fi

# Configure and build with error handling
echo "Running cmake with args: $CMAKE_ARGS"
if ! cmake $CMAKE_ARGS ..; then
    echo ""
    echo "ERROR: CMake configuration failed."
    echo "This is likely due to missing dependencies. Please check the error message above."
    echo "For libssh issues, try:"
    echo "  1. Install libssh development package: sudo apt install libssh-dev"
    echo "  2. Run our helper script: ./examples/find_libssh.sh"
    echo "  3. If you know where libssh is installed, specify it with:"
    echo "     cmake -DLIBSSH_LIBRARY=/path/to/libssh.so -DLIBSSH_INCLUDE_DIR=/path/to/include .."
    exit 1
fi

if ! make -j$(nproc); then
    echo ""
    echo "ERROR: Build failed."
    echo "Please check the error messages above for details."
    exit 1
fi

echo ""
echo "Build complete. Binary is at build/runner"
echo ""
echo "Examples:"
echo "  ./run.sh examples/local_command.json    # Run a local command"
echo "  ./run.sh examples/env_vars.json         # Run with environment variables"