package compiler

import "sync"

// Compile compiles all the functions.
func Compile(directory string) (map[string]*Function, error) {
	functions, errors := Scan(directory)
	wg := sync.WaitGroup{}
	allFunctions := map[string]*Function{}

	for functions != nil || errors != nil {
		select {
		case err, ok := <-errors:
			if !ok {
				errors = nil
				continue
			}

			return nil, err

		case function, ok := <-functions:
			if !ok {
				functions = nil
				continue
			}

			wg.Add(1)

			go func() {
				defer wg.Done()
				function.Compile()
			}()

			allFunctions[function.Name] = function
		}
	}

	wg.Wait()
	return allFunctions, nil
}