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import { AlertCircle, Check, CheckCheck, FileText, Mic } from "lucide-react";
import { useMemo, useState } from "react";
import type { WaMessage, WaTemplate } from "../../lib/api/whatsapp";
import { getWaMediaUrl } from "../../lib/api/whatsapp";
import { cn } from "../../lib/utils";
import {
getTemplateBodyText,
parseTemplateComponents,
renderPreviewText,
} from "./template-utils";
type MessageThreadProps = {
messages: WaMessage[];
templates?: WaTemplate[];
isLoading: boolean;
};
function formatTime(dateStr: string): string {
return new Date(dateStr).toLocaleTimeString("en-IN", {
hour: "2-digit",
minute: "2-digit",
});
}
function formatDate(dateStr: string): string {
const date = new Date(dateStr);
const today = new Date();
const yesterday = new Date(today);
yesterday.setDate(yesterday.getDate() - 1);
if (date.toDateString() === today.toDateString()) return "Today";
if (date.toDateString() === yesterday.toDateString()) return "Yesterday";
return date.toLocaleDateString("en-IN", {
day: "numeric",
month: "short",
year: "numeric",
});
}
/** Exported: the RRM referral screen renders the same ticks on its own thread. */
export function StatusIcon({ status }: { status: string }) {
switch (status) {
case "sent":
return <Check className="h-3 w-3 text-foreground-subtle" />;
case "delivered":
return <CheckCheck className="h-3 w-3 text-foreground-subtle" />;
case "read":
return <CheckCheck className="h-3 w-3 text-info" />;
case "failed":
return <AlertCircle className="h-3 w-3 text-error" />;
default:
return null;
}
}
type SentComponent = {
type?: string;
parameters?: Array<{ text?: string; type?: string }>;
};
function parseContent(
content: string | null,
type: string,
templateMap?: Map<string, WaTemplate>,
templateName?: string | null,
): string {
Iif (!content) return "";
try {
const parsed = JSON.parse(content);
if (typeof parsed === "string") return parsed;
// Text messages
if (parsed.body) return parsed.body;
if (parsed.text?.body) return parsed.text.body;
// Template messages — resolve body text with parameter values
if (type === "template") {
return resolveTemplateMessage(parsed, templateMap, templateName);
}
// Media (image/video/document/audio) never reaches here — MediaBubble
// renders those types with the real bytes.
// Location
if (type === "location") {
const parts = [parsed.name, parsed.address].filter(Boolean);
return parts.length > 0
? `[Location] ${parts.join(", ")}`
: `[Location] ${parsed.latitude}, ${parsed.longitude}`;
}
// Interactive (button/list replies)
Eif (type === "interactive") {
const title = parsed.buttonReply?.title ?? parsed.listReply?.title ?? "";
return title ? `[Reply] ${title}` : "[Interactive message]";
}
return parsed.body ?? content;
} catch {
return content;
}
}
/**
* Resolve a template message into the text the customer would see.
* Looks up the template definition to get the body text with {{N}} placeholders,
* then substitutes the parameter values that were sent with the message.
*/
function resolveTemplateMessage(
parsed: Record<string, unknown>,
templateMap?: Map<string, WaTemplate>,
templateName?: string | null,
): string {
// Extract sent parameters from the message content
// Format 1: { templateName, language, components: [...] }
const sentComponents = (parsed.components ?? []) as SentComponent[];
// Format 2: full payload { template: { name, components: [...] } }
const nestedTemplate = parsed.template as
| { name?: string; components?: SentComponent[] }
| undefined;
const msgComponents = nestedTemplate?.components ?? sentComponents;
const name =
templateName ??
(parsed.templateName as string) ??
nestedTemplate?.name ??
"";
// Build parameter values map from sent components
const values: Record<string, string> = {};
for (const comp of msgComponents) {
const compType = (comp.type ?? "").toUpperCase();
Iif (compType !== "BODY" && compType !== "HEADER") continue;
for (const [idx, param] of (comp.parameters ?? []).entries()) {
Eif (param.text) {
values[`${compType}_${idx + 1}`] = param.text;
}
}
}
// Look up the template definition to get the body text with placeholders
const template = name ? templateMap?.get(name) : undefined;
if (template?.components) {
const defComponents = parseTemplateComponents(template.components);
const bodyText = getTemplateBodyText(defComponents);
Eif (bodyText) {
return renderPreviewText(bodyText, "BODY", values);
}
}
// Fallback: show parameter values if template definition unavailable
const paramTexts = Object.values(values);
if (paramTexts.length > 0) {
return paramTexts.join(", ");
}
return name ? `[Template: ${name}]` : "[Template message]";
}
/** The four types whose payload is a file rather than text. */
const MEDIA_TYPES = new Set(["image", "video", "document", "audio"]);
type ParsedMedia = {
/** Where the bytes come from, or null when the row records none. */
src: string | null;
caption: string | null;
filename: string | null;
};
function parseMedia(msg: WaMessage): ParsedMedia {
let parsed: Record<string, unknown> = {};
try {
const raw: unknown = msg.content ? JSON.parse(msg.content) : {};
Eif (raw && typeof raw === "object") parsed = raw as Record<string, unknown>;
} catch {
// A malformed row still renders as "unavailable" rather than crashing.
}
const caption = typeof parsed.caption === "string" ? parsed.caption : null;
const filename = typeof parsed.filename === "string" ? parsed.filename : null;
// Inbound: Meta gave us a media id, and the API proxies the bytes — the
// lookaside URL needs our bearer token, so a browser cannot fetch it.
if (typeof parsed.mediaId === "string" && parsed.mediaId.length > 0) {
return { src: getWaMediaUrl(msg.id), caption, filename };
}
// Outbound: we handed Meta a public link and never held a media id, so the
// proxy has nothing to fetch — show the link we sent.
if (typeof parsed.link === "string" && parsed.link.length > 0) {
return { src: parsed.link, caption, filename };
}
return { src: null, caption, filename };
}
const MEDIA_LABEL: Record<string, string> = {
image: "Photo",
video: "Video",
document: "File",
audio: "Voice message",
};
/** Shown when the bytes are gone — Meta expires media, and old rows will 404. */
function MediaUnavailable({ type }: { type: string }) {
return (
<p className="text-sm italic text-foreground-muted">
{MEDIA_LABEL[type] ?? "Attachment"} is no longer available — WhatsApp
removes media after a while.
</p>
);
}
/**
* Render what the customer actually sent.
*
* Every source can fail: Meta expires media, the access token may be unset,
* and rows predating the media endpoint carry no bytes at all. Each branch
* degrades to readable text rather than a browser's broken-image glyph.
*/
function MediaBubble({ msg }: { msg: WaMessage }) {
const [failed, setFailed] = useState(false);
const { src, caption, filename } = parseMedia(msg);
const captionEl = caption ? (
<p className="mt-1 text-sm whitespace-pre-wrap break-words">{caption}</p>
) : null;
if (!src || failed) {
return (
<>
<MediaUnavailable type={msg.type} />
{captionEl}
</>
);
}
if (msg.type === "image") {
return (
<>
<img
src={src}
alt={caption ?? "Photo sent on WhatsApp"}
loading="lazy"
onError={() => setFailed(true)}
className="max-h-72 h-auto max-w-full rounded object-contain"
/>
{captionEl}
</>
);
}
if (msg.type === "video") {
return (
<>
{/* biome-ignore lint/a11y/useMediaCaption: a customer's clip has no caption track to offer */}
<video
src={src}
controls
preload="metadata"
onError={() => setFailed(true)}
className="max-h-72 max-w-full rounded"
/>
{captionEl}
</>
);
}
// Document and audio: a labelled link through the same endpoint. The API
// sets Content-Disposition, because a cross-origin `download` attribute is
// ignored by the browser.
const label =
msg.type === "document" ? (filename ?? "Document") : "Voice message";
const Icon = msg.type === "document" ? FileText : Mic;
return (
<>
<a
href={src}
target="_blank"
rel="noopener noreferrer"
className="flex items-center gap-2 text-sm underline break-all"
>
<Icon className="h-4 w-4 shrink-0" />
{label}
</a>
{captionEl}
</>
);
}
export function MessageThread({
messages,
templates,
isLoading,
}: MessageThreadProps) {
const templateMap = useMemo(() => {
const map = new Map<string, WaTemplate>();
for (const t of templates ?? []) {
map.set(t.name, t);
}
return map;
}, [templates]);
if (isLoading) {
return (
<div className="flex-1 flex items-center justify-center">
<div className="animate-spin rounded-full h-8 w-8 border-b-2 border-whatsapp-green" />
</div>
);
}
if (messages.length === 0) {
return (
<div className="flex-1 flex items-center justify-center text-foreground-muted">
<p className="text-sm">No messages yet</p>
</div>
);
}
// Group messages by date
const groupedMessages: { date: string; messages: WaMessage[] }[] = [];
let currentDate = "";
for (const msg of messages) {
const date = formatDate(msg.dateCreated);
if (date !== currentDate) {
currentDate = date;
groupedMessages.push({ date, messages: [msg] });
} else E{
groupedMessages[groupedMessages.length - 1].messages.push(msg);
}
}
return (
<div className="flex-1 overflow-y-auto p-4 space-y-4">
{groupedMessages.map((group) => (
<div key={group.date}>
{/* Date Separator */}
<div className="flex items-center justify-center my-4">
<span className="bg-background-muted text-foreground-muted text-xs px-3 py-1 rounded-full">
{group.date}
</span>
</div>
{/* Messages */}
<div className="space-y-2">
{group.messages.map((msg) => (
<div
key={msg.id}
className={cn(
"flex",
msg.direction === "outbound"
? "justify-end"
: "justify-start",
)}
>
<div
className={cn(
"max-w-[75%] rounded-lg px-3 py-2 shadow-sm",
msg.direction === "outbound"
? "bg-whatsapp-bubble-sent dark:bg-whatsapp-green/20 text-foreground-default"
: "bg-background-default border border-border-default text-foreground-default",
)}
>
{/* Template badge */}
{msg.templateName && (
<p className="text-xs font-medium text-whatsapp-green dark:text-whatsapp-green mb-1">
Template: {msg.templateName}
</p>
)}
{/* Message content */}
{MEDIA_TYPES.has(msg.type) ? (
<MediaBubble msg={msg} />
) : (
<p className="text-sm whitespace-pre-wrap break-words">
{parseContent(
msg.content,
msg.type,
templateMap,
msg.templateName,
)}
</p>
)}
{/* Time and status */}
<div className="flex items-center justify-end gap-1 mt-1">
<span className="text-xs text-foreground-subtle">
{formatTime(msg.dateCreated)}
</span>
{msg.direction === "outbound" && (
<StatusIcon status={msg.status} />
)}
</div>
{/* A red dot alone reads as "still sending". Say what
Meta actually did, so a failure is a fact rather
than a suspicion. */}
{msg.direction === "outbound" && msg.status === "failed" && (
<p className="mt-1 text-xs text-error">
{whatsAppErrorCopy(msg.errorCode)}
</p>
)}
</div>
</div>
))}
</div>
</div>
))}
</div>
);
}
|