package main

import (
	"fmt"
	"regexp"
	"strings"
)

func dedent(s string) string {
	lines := strings.Split(s, "\n")

	// Remove leading/trailing empty lines
	for len(lines) > 0 && strings.TrimSpace(lines[0]) == "" {
		lines = lines[1:]
	}
	for len(lines) > 0 && strings.TrimSpace(lines[len(lines)-1]) == "" {
		lines = lines[:len(lines)-1]
	}

	// Use the next line to determine indentation pattern
	indent := regexp.MustCompile(`^\s*`).FindString(lines[0])
	for i, line := range lines {
		lines[i] = strings.TrimPrefix(line, indent)
	}

	return strings.Join(lines, "\n")
}

func longMockOutput(lines int) string {
	var b strings.Builder
	b.WriteString("Running test-suite...\n\n")
	for i := 1; i <= lines; i++ {
		fmt.Fprintf(&b, "ok  %02d  package/name - test case %d passed\n", i%10, i)
	}
	b.WriteString("\nSUMMARY: 58 passed, 2 skipped, 0 failed\n")
	return b.String()
}

func mockResultFor(input string) string {
	// simple mock: echo input and add a few lines for realism
	switch input {
	case "whoami":
		return "alice"
	case "date":
		return "Fri Aug 22 21:23:00 CEST 2025"
	case "uptime":
		return " 21:23:00 up 3 days,  4:12,  2 users,  load average: 0.42, 0.50, 0.47"
	default:
		return fmt.Sprintf("Mock result for: %s\n\n%s", input, longMockOutput(20))
	}
}