package tools

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

// fakeOpenCode legt ein Programm „opencode“ in einen eigenen PATH.
func fakeOpenCode(t *testing.T, script string) {
	t.Helper()
	bin := t.TempDir()
	if err := os.WriteFile(filepath.Join(bin, "opencode"), []byte("#!/bin/sh\n"+script), 0o755); err != nil {
		t.Fatal(err)
	}
	t.Setenv("PATH", bin)
}

func TestCheckOpenCode(t *testing.T) {
	repo := t.TempDir()

	fakeOpenCode(t, "exit 0\n")
	if msg := CheckOpenCode(repo); msg != "" {
		t.Errorf("gültige Konfiguration: %q", msg)
	}

	fakeOpenCode(t, `printf '\033[91m\033[1mError: \033[0mConfiguration is invalid at %s/opencode.json\n↳ Missing key mcp.x.enabled\n' "$PWD" >&2; exit 1`+"\n")
	msg := CheckOpenCode(repo)
	want := "Configuration is invalid at " + repo + "/opencode.json\n↳ Missing key mcp.x.enabled"
	if resolved, _ := filepath.EvalSymlinks(repo); msg != want && msg != "Configuration is invalid at "+resolved+"/opencode.json\n↳ Missing key mcp.x.enabled" {
		t.Errorf("Meldung ohne Farbcodes erwartet:\n%q\nbekommen:\n%q", want, msg)
	}

	t.Setenv("PATH", t.TempDir())
	if msg := CheckOpenCode(repo); msg != "" {
		t.Errorf("ohne OpenCode wird nichts geprüft: %q", msg)
	}
}