package templates

import (
	"strconv"
	"time"

	"backend/internal/db/sqlc"

	"github.com/google/uuid"
)

const DiscussionMaxBodyLength = 10000

type DiscussionForm struct {
	Body string
}

type DiscussionErrors struct {
	Body    string
	General string
}

type DiscussionMessageView struct {
	ID          uuid.UUID
	AuthorEmail string
	Body        string
	CreatedAt   time.Time
}

type DiscussionTabData struct {
	Messages []DiscussionMessageView
}

func DiscussionPostURL(tabloID uuid.UUID) string {
	return "/tablos/" + tabloID.String() + "/discussion/messages"
}

func DiscussionMaxBodyLengthString() string {
	return strconv.Itoa(DiscussionMaxBodyLength)
}

func DiscussionURL(tabloID uuid.UUID) string {
	return "/tablos/" + tabloID.String() + "/discussion"
}

func DiscussionMessagesFromRows(rows []sqlc.ListDiscussionMessagesByTabloRow) []DiscussionMessageView {
	messages := make([]DiscussionMessageView, 0, len(rows))
	for _, row := range rows {
		messages = append(messages, DiscussionMessageView{
			ID:          row.ID,
			AuthorEmail: row.AuthorEmail,
			Body:        row.Body,
			CreatedAt:   row.CreatedAt.Time,
		})
	}
	return messages
}

func DiscussionMessageFromRow(row sqlc.GetDiscussionMessageWithAuthorRow) DiscussionMessageView {
	return DiscussionMessageView{
		ID:          row.ID,
		AuthorEmail: row.AuthorEmail,
		Body:        row.Body,
		CreatedAt:   row.CreatedAt.Time,
	}
}

func DiscussionDateLabel(t time.Time) string {
	return t.Local().Format("January 2, 2006")
}

func DiscussionTimestampLabel(t time.Time) string {
	return t.Local().Format("January 2, 2006 15:04")
}

func DiscussionShowDaySeparator(messages []DiscussionMessageView, index int) bool {
	if index == 0 {
		return true
	}
	current := messages[index].CreatedAt.Local()
	previous := messages[index-1].CreatedAt.Local()
	return current.Year() != previous.Year() || current.YearDay() != previous.YearDay()
}