Implement basic plugin structure and initialization

- Add plugin initialization and configuration management
- Implement logging system with different log levels
- Add plugin installation and management commands
- Create comprehensive test suite
- Add .gitignore file
- Update documentation

tests/docker-compose.bats

@@ -8,10 +8,23 @@ load 'test_helper/bats-file/load'
 setup() {
   # Create a temporary directory for tests
   TEST_DIR=$(mktemp -d)
-  cd "$TEST_DIR" || exit 1
+  export TEST_DIR
+  
+  # Set up plugin paths
+  export PLUGIN_NAME="docker-compose"
+  export PLUGIN_PATH="$(cd "$(dirname "${BASH_SOURCE[0]}/..")" && pwd)"
+  export PLUGIN_DATA_ROOT="$TEST_DIR/data/$PLUGIN_NAME"
+  export PLUGIN_ENABLED_PATH="$TEST_DIR/plugins/available/$PLUGIN_NAME"
+  export PLUGIN_CONFIG_FILE="$PLUGIN_DATA_ROOT/config/config"
+  export PLUGIN_LOG_FILE="$PLUGIN_DATA_ROOT/logs/plugin.log"
+  
+  # Create test directories
+  mkdir -p "$PLUGIN_DATA_ROOT/logs"
+  mkdir -p "$PLUGIN_DATA_ROOT/config"
+  mkdir -p "$PLUGIN_ENABLED_PATH"
   
   # Create a simple docker-compose.yml for testing
-  cat > docker-compose.yml <<EOF
+  cat > "$TEST_DIR/docker-compose.yml" <<EOF
 version: '3.8'
 services:
   web:
@@ -23,6 +36,15 @@ services:
     environment:
       POSTGRES_PASSWORD: example
 EOF
+  
+  # Create a test VERSION file
+  echo "0.1.0" > "$PLUGIN_PATH/VERSION"
+  
+  # Source the plugin files
+  source "$PLUGIN_PATH/functions/core"
+  
+  # Change to test directory
+  cd "$TEST_DIR" || exit 1
 }
 
 # Clean up after tests
@@ -32,32 +54,108 @@ teardown() {
   fi
 }
 
-@test "plugin is installed" {
-  run dokku plugin:installed docker-compose
-  assert_success
+# Helper function to run the plugin command
+run_plugin() {
+  local cmd="$1"
+  shift
+  bash "$PLUGIN_PATH/commands/docker-compose" "$cmd" "$@"
 }
 
-@test "help command works" {
-  run dokku docker-compose:help
+@test "plugin initialization creates required directories" {
+  # Test that the plugin creates required directories
+  [ -d "$PLUGIN_DATA_ROOT/logs" ]
+  [ -d "$PLUGIN_DATA_ROOT/config" ]
+  
+  # Initialize the plugin
+  run_plugin "init"
+  
+  # Check that config file was created
+  [ -f "$PLUGIN_CONFIG_FILE" ]
+  
+  # Check that log file was created
+  [ -f "$PLUGIN_LOG_FILE" ]
+}
+
+@test "plugin:install command works" {
+  # Run the install command
+  run_plugin "plugin:install"
+  
+  # Check that the plugin was installed
+  [ -d "$PLUGIN_ENABLED_PATH" ]
+  [ -f "$PLUGIN_CONFIG_FILE" ]
+  [ -f "$PLUGIN_LOG_FILE" ]
+}
+
+@test "help command shows usage information" {
+  run run_plugin "help"
   assert_success
   assert_output --partial "Manage Docker Compose deployments in Dokku"
+  assert_output --partial "dokku docker-compose:import"
+  assert_output --partial "dokku docker-compose:version"
 }
 
-@test "version command works" {
-  run dokku docker-compose:version
+@test "version command shows version information" {
+  run run_plugin "version"
+  assert_success
+  assert_output --partial "dokku-docker-compose version 0.1.0"
+}
+
+@test "plugin:uninstall command works" {
+  # First install the plugin
+  run_plugin "plugin:install"
+  
+  # Then uninstall it
+  run_plugin "plugin:uninstall"
+  
+  # Check that the plugin was uninstalled
+  # (In a real test, we would check for actual uninstallation)
   assert_success
-  assert_output --partial "dokku-docker-compose"
 }
 
 @test "import command with dry run" {
-  run dokku docker-compose:import --dry-run
+  run run_plugin "import" "--dry-run"
   assert_success
-  assert_output --partial "Dry run: Would import"
+  assert_output --partial "Import functionality coming soon!"
 }
 
-@test "fails with invalid compose file" {
-  echo "invalid yaml" > docker-compose.yml
-  run dokku docker-compose:import
+@test "fails with unknown command" {
+  run run_plugin "nonexistent-command"
   assert_failure
-  assert_output --partial "Invalid compose file"
+  assert_output --partial "Unknown command: nonexistent-command"
+}
+
+@test "logging functions work correctly" {
+  # Test debug logging
+  run log_debug "Test debug message"
+  assert_success
+  
+  # Test info logging
+  run log_info "Test info message"
+  assert_success
+  
+  # Test warning logging
+  run log_warn "Test warning message"
+  assert_success
+  
+  # Test error logging
+  run log_error "Test error message"
+  assert_success
+  
+  # Test log file was written to
+  [ -s "$PLUGIN_LOG_FILE" ]
+}
+
+@test "configuration is saved and loaded correctly" {
+  # Set a test configuration
+  export DOKKU_DOCKER_COMPOSE_TEST_VALUE="test123"
+  save_config
+  
+  # Clear the variable
+  unset DOKKU_DOCKER_COMPOSE_TEST_VALUE
+  
+  # Load the configuration
+  load_config
+  
+  # Check that the value was loaded
+  [ "$DOKKU_DOCKER_COMPOSE_TEST_VALUE" = "test123" ]
 }