package dashboard

import (
	"strings"

	"inbox/internal/domain/message"
	"inbox/internal/domain/topic"
)

func previewText(value string) string {
	value = strings.TrimSpace(value)
	if value == "" {
		return ""
	}
	lines := strings.Split(value, "\n")
	if len(lines) == 0 {
		return value
	}
	return strings.TrimSpace(lines[0])
}

func splitRecipients(value string) []string {
	parts := strings.Split(value, ",")
	out := make([]string, 0, len(parts))
	seen := make(map[string]struct{}, len(parts))
	for _, part := range parts {
		part = strings.TrimSpace(part)
		if part == "" {
			continue
		}
		if _, ok := seen[part]; ok {
			continue
		}
		seen[part] = struct{}{}
		out = append(out, part)
	}
	return out
}

func messageTargetsRole(expr, roleName string) bool {
	for _, item := range splitRecipients(expr) {
		if item == roleName {
			return true
		}
	}
	return false
}

func dashboardMessageItemFor(item message.Record, record topic.Record) dashboardMessageItem {
	out := dashboardMessageItem{
		MessageID:    item.ID,
		From:         item.FromRoleName,
		To:           item.ToExpr,
		Type:         string(item.Type),
		Topic:        record.Slug,
		Stage:        item.Stage,
		BodyMarkdown: item.BodyMarkdown,
	}
	if item.ReplyToMessageID != "" {
		out.ReplyTo = item.ReplyToMessageID
	}
	return out
}