package forumlog

import (
	"bufio"
	"strings"
)

// ParseMetadata parses metadata, discards the broken parts, and returns the
// parsed data as a map (`m`) and the position of the first IRC post (`n`)
func ParseMetadata(data string) map[string][]string {
	result := make(map[string][]string)
	key := ""

	scanner := bufio.NewScanner(strings.NewReader(data))
	for scanner.Scan() {
		line := strings.Trim(scanner.Text(), "\r\t  ")

		if strings.HasPrefix(line, "[") {
			break
		}
		if len(line) < 1 {
			key = ""
			continue
		}

		if key == "" {
			split := strings.Split(line, ":")
			key = split[0]
		} else {
			result[key] = append(result[key], line)
		}
	}

	return result
}