package ast

import "slices"

func (c *GitConfig) Clear() {
	c.Sections = []*GitSection{}
	c.CommentLines = map[uint32]struct{}{}
}

func (c *GitConfig) FindSection(line uint32) *GitSection {
	index, found := slices.BinarySearchFunc(
		c.Sections,
		line,
		func(current *GitSection, target uint32) int {
			if target > current.End.Line {
				return -1
			}

			if target < current.Start.Line {
				return 1
			}

			return 0
		},
	)

	if !found {
		return nil
	}

	return c.Sections[index]
}

func (c *GitConfig) FindOption(line uint32) (*GitSection, *GitEntry) {
	section := c.FindSection(line)

	if section == nil {
		return nil, nil
	}

	entry := section.FindOption(line)

	return section, entry
}

func (s *GitSection) FindOption(line uint32) *GitEntry {
	index, found := slices.BinarySearchFunc(
		s.Entries,
		line,
		func(current *GitEntry, target uint32) int {
			if target > current.End.Line {
				return -1
			}

			if target < current.Start.Line {
				return 1
			}

			return 0
		},
	)

	if !found {
		return nil
	}

	return s.Entries[index]
}