package validate

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"strings"
	"testing"
	"testing/fstest"

	"go.maximumdirect.net/promptkit/internal/domain"
)

func TestSchemaPreparationDoesNotDependOnSourceName(t *testing.T) {
	for _, test := range []struct {
		name, schema string
		rejected     bool
	}{
		{"source name", `{"$defs":{"v":{"type":"integer"}},"$ref":"schema.json#/$defs/v"}`, true},
		{"unused source name", `{"$defs":{"v":{"$ref":"schema.json"}}}`, true},
		{"fragment", `{"$defs":{"v":{"type":"integer"}},"$ref":"#/$defs/v"}`, false},
		{"explicit ID", `{"$id":"https://example.invalid/schema.json","$defs":{"v":{"type":"integer"}},"$ref":"schema.json#/$defs/v"}`, false},
		{"embedded ID", `{"$defs":{"v":{"$id":"child","type":"integer"}},"$ref":"child"}`, false},
	} {
		t.Run(test.name, func(t *testing.T) {
			dir := t.TempDir()
			if err := os.WriteFile(filepath.Join(dir, "schema.json"), []byte(test.schema), 0600); err != nil {
				t.Fatal(err)
			}
			fsys := fstest.MapFS{"schema.json": &fstest.MapFile{Data: []byte(test.schema)}}
			for i, validator := range []ValidationPreparer{NewStandardValidator(dir), NewFSValidator(fsys, ".")} {
				t.Run(fmt.Sprint(i), func(t *testing.T) {
					_, err := validator.PrepareValidation(context.Background(), domain.OutputContract{Format: domain.FormatJSON, ValidationMode: domain.ValidationJSONSchema, SchemaPath: "schema.json"})
					if test.rejected {
						if err == nil || !strings.Contains(err.Error(), "source location") {
							t.Fatalf("expected source-independent rejection, got %v", err)
						}
					} else if err != nil {
						t.Fatal(err)
					}
				})
			}
		})
	}
}