package loop

import (
	"fmt"
	"time"
)

type Agent interface {
	Run(todo *ToDo) error
}

type UserAgent struct {
	pr PromptReader
}

func (a *UserAgent) Run(todo *ToDo) error {
	for {
		unlocked := false
		todo.Lock()
		items := findActionableItems(todo, "user")
		if len(items) == 0 {
			fmt.Println("## USER NO ITEMS")
			todo.Unlock()
			time.Sleep(30 * time.Second)
			continue
		}
		fmt.Println(todo.String())
		fmt.Printf("-- YOU START WORKING %d\n", len(items))
		for _, i := range items {
			fmt.Printf("YOU %s %s: ", i.ID, i.Title)
			comment, err := a.pr.Read()
			if err != nil {
				return err
			}
			if comment == "DONE" {
				i.Done = true
				continue
			}
			if comment == "BREAK" {
				unlocked = true
				todo.Unlock()
				time.Sleep(30 * time.Second)
				break
			}
			if comment == "ASSIGN" {
				i.AssignedTo = "assistant"
				continue
			}
			i.Discussion = append(i.Discussion, Comment{
				Author:  "user",
				Comment: comment,
			})
			i.AssignedTo = "assistant"
		}
		fmt.Println("-- YOU END WORKING")
		if !unlocked {
			todo.Unlock()
		}
	}
}

func findActionableItems(todo *ToDo, assignedTo string) []*ToDo {
	if todo.Done {
		return nil
	}
	var ret []*ToDo
	for _, i := range todo.Items {
		ret = append(ret, findActionableItems(i, assignedTo)...)
		if len(ret) > 0 && !todo.Parallel {
			return ret
		}
	}
	if len(ret) == 0 && todo.AssignedTo == assignedTo && !todo.Done {
		for _, i := range todo.Items {
			if !i.Done {
				return nil
			}
		}
		return []*ToDo{todo}
	}
	return ret
}