package executor

import (
	"fmt"
	"testing"

	"github.com/tidwall/gjson"
)

func TestClaudeBuiltinToolRegistry_DefaultSeedFallback(t *testing.T) {
	registry := augmentClaudeBuiltinToolRegistry(nil, nil)
	for _, name := range defaultClaudeBuiltinToolNames {
		if !registry[name] {
			t.Fatalf("default builtin %q missing from fallback registry", name)
		}
	}
}

func TestApplyClaudeToolPrefix_KnownFallbackBuiltinsRemainUnprefixed(t *testing.T) {
	for _, builtin := range defaultClaudeBuiltinToolNames {
		t.Run(builtin, func(t *testing.T) {
			input := []byte(fmt.Sprintf(`{
				"tools":[{"name":"Read"}],
				"tool_choice":{"type":"tool","name":%q},
				"messages":[{"role":"assistant","content":[{"type":"tool_use","name":%q,"id":"toolu_1","input":{}},{"type":"tool_reference","tool_name":%q},{"type":"tool_result","tool_use_id":"toolu_1","content":[{"type":"tool_reference","tool_name":%q}]}]}]
			}`, builtin, builtin, builtin, builtin))
			out := applyClaudeToolPrefix(input, "proxy_")

			if got := gjson.GetBytes(out, "tool_choice.name").String(); got != builtin {
				t.Fatalf("tool_choice.name = %q, want %q", got, builtin)
			}
			if got := gjson.GetBytes(out, "messages.0.content.0.name").String(); got != builtin {
				t.Fatalf("messages.0.content.0.name = %q, want %q", got, builtin)
			}
			if got := gjson.GetBytes(out, "messages.0.content.1.tool_name").String(); got != builtin {
				t.Fatalf("messages.0.content.1.tool_name = %q, want %q", got, builtin)
			}
			if got := gjson.GetBytes(out, "messages.0.content.2.content.0.tool_name").String(); got != builtin {
				t.Fatalf("messages.0.content.2.content.0.tool_name = %q, want %q", got, builtin)
			}
			if got := gjson.GetBytes(out, "tools.0.name").String(); got != "proxy_Read" {
				t.Fatalf("tools.0.name = %q, want %q", got, "proxy_Read")
			}
		})
	}
}