package test

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

// MatchLog looks for the key/val in the input (a log file)
func MatchLog(input string, startLine int, args ...interface{}) bool {
	size := len(args)
	if size < 2 || size%2 != 0 {
		panic("args must be even")
	}
	lines := strings.Split(input, "\n")
	if len(lines) < startLine {
		panic("log too short, lines:" + fmt.Sprintf("%v", len(lines)))
	}
	re, _ := regexp.Compile(`[[:space:]:\\]`)
	var lookFor string
	// for each line
	found := false
	for i := startLine - 1; i < len(lines); i++ {
		// for each pair
		for j := 0; j < len(args); j++ {
			if j%2 != 0 {
				continue
			}
			key := args[j]
			val := args[j+1]
			lookFor = fmt.Sprintf("%v", val)
			if re.MatchString(lookFor) {
				// quote it
				lookFor = fmt.Sprintf(`%s="%s"`, key, val)
			} else {
				lookFor = fmt.Sprintf(`%s=%v`, key, val)
			}

			if pos := strings.Index(lines[i], lookFor); pos != -1 {
				found = true
			} else {
				found = false
				// short circuit
				break
			}
		}
		if found {
			break
		}
	}
	return found
}