gittool

type Change struct {
	// FileName indicates which file the change are applied against.
	FileName string
	// Mode indicates what kind of the change, whether it's a new created file,
	// or a modified file, or deleted file, or renamed file.
	Mode DiffMode
	// Sections indicates the change details.
	// For NewMode and RenameMode it contains all the contents of the new file
	// For ModifyMode it contains the each change sections made to compared branch
	// For DeleteMode it's empty
	Sections []*Section
}

type DiffMode int

type DiffOperation int

type GitClient interface {
	// DiffChangesFromCommitted returns the diff changes between HEAD and compared branch commit.
	DiffChangesFromCommitted(compareBranch string) ([]*Change, error)
}

type Section struct {
	// Operation indicates how this section operates compared to the specified branch.
	// Equal means no change
	// Add means contents of the section are added into the compared branch.
	// Delete means contents of the section are deleted from the compared branch.
	Operation DiffOperation
	// Count indicates how many lines this section object contains in total
	Count int
	// StartLine indicates where this section starts from the source file.
	StartLine int
	// EndLine indicates where thie section ends from the source file.
	EndLine int
	// Contents contains [StartLine..EndLine] lines from the source file.
	Contents []string
}