package server

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

	"github.com/daniel/cursor-adapter/internal/types"
)

func TestDetectCallerWorkspace_ClaudeCodeEnvBlock(t *testing.T) {
	dir := t.TempDir()
	corpus := "<env>\nWorking directory: " + dir + "\nIs directory a git repo: Yes\n</env>"
	got := detectCallerWorkspace(corpus)
	if got != dir {
		t.Fatalf("got %q, want %q", got, dir)
	}
}

func TestDetectCallerWorkspace_RejectsNonExistentSandboxPath(t *testing.T) {
	corpus := "Working directory: /sessions/gracious-magical-franklin/proj"
	got := detectCallerWorkspace(corpus)
	if got != "" {
		t.Fatalf("expected empty (path doesn't exist on host), got %q", got)
	}
}

func TestDetectCallerWorkspace_RejectsRelativePath(t *testing.T) {
	corpus := "cwd: src/"
	got := detectCallerWorkspace(corpus)
	if got != "" {
		t.Fatalf("expected empty for relative path, got %q", got)
	}
}

func TestDetectCallerWorkspace_RejectsFilePath(t *testing.T) {
	dir := t.TempDir()
	f := filepath.Join(dir, "file.txt")
	if err := os.WriteFile(f, []byte("x"), 0o644); err != nil {
		t.Fatal(err)
	}
	corpus := "Working directory: " + f
	got := detectCallerWorkspace(corpus)
	if got != "" {
		t.Fatalf("expected empty for file path, got %q", got)
	}
}

func TestDetectAnthropicCwd_FromSystemBlock(t *testing.T) {
	dir := t.TempDir()
	req := types.AnthropicMessagesRequest{
		System: []types.AnthropicBlock{
			{Type: "text", Text: "<env>\nWorking directory: " + dir + "\n</env>"},
		},
		Messages: []types.AnthropicMessage{
			{Role: "user", Content: []types.AnthropicBlock{{Type: "text", Text: "hi"}}},
		},
	}
	if got := detectAnthropicCwd(req); got != dir {
		t.Fatalf("got %q, want %q", got, dir)
	}
}

func TestDetectAnthropicCwd_FromUserMessage(t *testing.T) {
	dir := t.TempDir()
	req := types.AnthropicMessagesRequest{
		Messages: []types.AnthropicMessage{
			{Role: "user", Content: []types.AnthropicBlock{
				{Type: "text", Text: "<system-reminder>Current working directory: " + dir + "</system-reminder>\nHelp me"},
			}},
		},
	}
	if got := detectAnthropicCwd(req); got != dir {
		t.Fatalf("got %q, want %q", got, dir)
	}
}

func TestDetectAnthropicCwd_TrimsTrailingPunctuation(t *testing.T) {
	dir := t.TempDir()
	corpus := "Working directory: " + dir + "."
	if got := detectCallerWorkspace(corpus); got != dir {
		t.Fatalf("got %q, want %q (trailing dot should be stripped)", got, dir)
	}
}

func TestDetectAnthropicCwd_NoneFound(t *testing.T) {
	req := types.AnthropicMessagesRequest{
		Messages: []types.AnthropicMessage{
			{Role: "user", Content: []types.AnthropicBlock{{Type: "text", Text: "just a question"}}},
		},
	}
	if got := detectAnthropicCwd(req); got != "" {
		t.Fatalf("got %q, want empty", got)
	}
}

// Sanity check that none of our regexes mis-eat absolute paths inside
// regular sentences without a cwd marker.
func TestDetectCallerWorkspace_IgnoresUnmarkedAbsolutePaths(t *testing.T) {
	corpus := "I edited /tmp/foo earlier."
	if !strings.HasPrefix(corpus, "I edited") { // keep the import used
		t.Fatal("test fixture changed")
	}
	if got := detectCallerWorkspace(corpus); got != "" {
		t.Fatalf("got %q, want empty (no cwd marker)", got)
	}
}