package asaModels

import "regexp"

type (
	DHCPServer struct {
		Ranges map[string]dhcpRange `json:"ranges"`
	}

	dhcpRange struct {
		Begin   string
		End     string
		Enabled bool
	}
)

func (d *DHCPServer) Parse(s string) error {
	d.Ranges = make(map[string]dhcpRange)

	// Find available ranges
	addressLines := regexp.MustCompile(`dhcpd address (\S+) (\S+)`).FindAllStringSubmatch(s, -1)

	for _, r := range addressLines {
		curRange := dhcpRange{}

		// Break out the range to a begin and end
		m := regexp.MustCompile(`(\S+)-(\S+)`).FindStringSubmatch(r[1])
		if len(m) == 3 {
			curRange.Begin = m[1]
			curRange.End = m[2]
		}

		// Step through the enable lines and look for a match, if we find one, set variable to true
		enables := regexp.MustCompile(`dhcpd enable (\S+)`).FindAllStringSubmatch(s, -1)
		for _, line := range enables {
			if line[1] == r[2] {
				curRange.Enabled = true
				// Break loop early, no reason to check remaining lines
				break
			}
		}
		d.Ranges[r[2]] = curRange
	}

	return nil
}