package config_test

import (
	"os"
	"path/filepath"
	"strings"
	"testing"

	"sneak.berlin/go/vaultik/internal/config"
)

// TestLoadRefusesBadExcludePattern checks that an exclude pattern that does
// not compile, global or in a snapshot, fails at load with the setting and
// the pattern named, rather than the backup storing what it meant to leave
// out.
func TestLoadRefusesBadExcludePattern(t *testing.T) {
	t.Parallel()

	const storage = "storage_url: file:///tmp/vaultik-test-storage\n"

	tests := []struct {
		name    string
		config  string
		wantErr string
	}{
		{
			name: "global",
			config: "exclude: ['*.tmp', '.cache', 'build[']\n" +
				"snapshots:\n" +
				"  home:\n" +
				"    paths: [/tmp/vaultik-test-source]\n" + storage,
			wantErr: `exclude[2]: "build[" is not a valid exclude pattern`,
		},
		{
			name: "snapshot",
			config: "snapshots:\n" +
				"  home:\n" +
				"    paths: [/tmp/vaultik-test-source]\n" +
				"    exclude: ['/a/**/x[']\n" + storage,
			wantErr: `snapshots.home.exclude[0]: "/a/**/x[" is not a valid exclude pattern`,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			path := filepath.Join(t.TempDir(), "config.yml")

			err := os.WriteFile(path, []byte(tt.config), 0o600)
			if err != nil {
				t.Fatalf("write config: %v", err)
			}

			_, err = config.Load(path)
			if err == nil {
				t.Fatalf("Load() returned nil, want an error containing %q", tt.wantErr)
			}

			if !strings.Contains(err.Error(), tt.wantErr) {
				t.Fatalf("Load() error = %q, want it to contain %q", err, tt.wantErr)
			}
		})
	}
}