package loop

import (
	"fmt"
	"strings"
	"sync"

	"github.com/invopop/jsonschema"
)

type Comment struct {
	Author  string `json:"author"`
	Comment string `json:"comment"`
}

func (c Comment) String() string {
	return fmt.Sprintf("%s: %s", c.Author, c.Comment)
}

type ToDo struct {
	ID          string    `json:"id"`
	Title       string    `json:"title"`
	Description string    `json:"description"`
	Items       []*ToDo   `json:"items"`
	Done        bool      `json:"done"`
	AssignedTo  string    `json:"assignedTo"`
	Discussion  []Comment `json:"discussion"`
	lock        sync.Locker
}

const tmpl = `%s: %s
%s
%s
%s`

func (t ToDo) String() string {
	var comments []string
	for _, c := range t.Discussion {
		comments = append(comments, fmt.Sprintf("\t - %s", c.String()))
	}
	var items []string
	for _, i := range t.Items {
		items = append(items, fmt.Sprintf("\t%s", i.String()))
	}
	return fmt.Sprintf(tmpl, t.ID, t.Title, t.Description, strings.Join(comments, "\n"), strings.Join(items, "\n"))
}

func ToDoJSONSchema() string {
	reflector := jsonschema.Reflector{
		AllowAdditionalProperties:  false,
		RequiredFromJSONSchemaTags: true,
		DoNotReference:             false,
	}
	var v ToDo
	s := reflector.Reflect(v)
	b, err := s.MarshalJSON()
	if err != nil {
		panic(err)
	}
	return string(b)
}