feat: add react-i18next with English and Hindi locale support.

- Add i18next + react-i18next + i18next-browser-languagedetector.
- EN/HI translation files covering all UI strings across every page and component.
- Language switcher button in Navbar; choice persisted to localStorage.
- document.documentElement.lang synced to active language in App.
- Skip-nav link and #main-content anchor for keyboard accessibility.
- aria-describedby on modal dialog; page title and meta description in index.html.
- Secure page title set to 'BIS SP-21 Standards.'
This commit is contained in:
K
2026-05-03 00:01:14 +05:30
parent 0d8b2cdb3f
commit 8e1348fb63
19 changed files with 781 additions and 272 deletions
+28 -25
View File
@@ -1,14 +1,16 @@
import { useEffect, useRef, useState } from "react";
import { useTranslation } from "react-i18next";
import { askQuestion } from "../api/standards";
import "./StandardModal.css";
export default function StandardModal({ standard, onClose }) {
const { t } = useTranslation();
const modalRef = useRef(null);
const closeBtnRef = useRef(null);
const inputRef = useRef(null);
const [question, setQuestion] = useState("");
const [messages, setMessages] = useState([]); // [{role, text}]
const [messages, setMessages] = useState([]);
const [asking, setAsking] = useState(false);
const [aiError, setAiError] = useState(null);
const chatEndRef = useRef(null);
@@ -46,7 +48,7 @@ export default function StandardModal({ standard, onClose }) {
const { answer } = await askQuestion({ standard_id: standard.standard_id, question: q });
setMessages((prev) => [...prev, { role: "ai", text: answer }]);
} catch (err) {
setAiError(err.message || "Something went wrong. Please try again.");
setAiError(err.message || t("common.serverError"));
} finally {
setAsking(false);
setTimeout(() => inputRef.current?.focus(), 50);
@@ -69,6 +71,7 @@ export default function StandardModal({ standard, onClose }) {
role="dialog"
aria-modal="true"
aria-labelledby="modal-title"
aria-describedby="modal-summary"
tabIndex={-1}
>
{/* Header */}
@@ -82,7 +85,7 @@ export default function StandardModal({ standard, onClose }) {
className="modal-close"
ref={closeBtnRef}
onClick={onClose}
aria-label="Close standard detail"
aria-label={t("modal.closeLabel")}
>
</button>
@@ -91,15 +94,15 @@ export default function StandardModal({ standard, onClose }) {
{/* Standard detail */}
<div className="modal-body">
{standard.summary && (
<div className="modal-section">
<p className="modal-section-title">Summary</p>
<div className="modal-section" id="modal-summary">
<p className="modal-section-title">{t("modal.summary")}</p>
<p className="modal-section-body">{standard.summary}</p>
</div>
)}
{standard.keywords?.length > 0 && (
<div className="modal-section">
<p className="modal-section-title">Keywords</p>
<p className="modal-section-title">{t("modal.keywords")}</p>
<div className="modal-keywords">
{standard.keywords.map((kw) => (
<span className="modal-keyword" key={kw}>{kw}</span>
@@ -110,7 +113,7 @@ export default function StandardModal({ standard, onClose }) {
{sections.length > 0 && (
<div className="modal-section">
<p className="modal-section-title">Key Sections</p>
<p className="modal-section-title">{t("modal.keySections")}</p>
<div className="modal-key-sections">
{sections.map(([name, text]) => (
<div className="key-section-item" key={name}>
@@ -123,24 +126,24 @@ export default function StandardModal({ standard, onClose }) {
)}
{/* AI chat panel */}
<div className="modal-section ai-panel" aria-label="Ask AI about this standard">
<div className="modal-section ai-panel" aria-label={t("modal.askAI")}>
<p className="modal-section-title">
<span className="ai-label-icon" aria-hidden="true"></span>
Ask AI about this standard
{t("modal.askAI")}
</p>
{messages.length > 0 && (
<div className="chat-log" aria-live="polite" aria-label="Conversation">
<div className="chat-log" aria-live="polite" aria-label={t("modal.conversation")}>
{messages.map((m, i) => (
<div key={i} className={`chat-bubble chat-bubble--${m.role}`}>
{m.role === "ai" && (
<span className="bubble-label" aria-label="AI response"></span>
<span className="bubble-label" aria-label={t("modal.aiResponse")}></span>
)}
<p className="bubble-text">{m.text}</p>
</div>
))}
{asking && (
<div className="chat-bubble chat-bubble--ai chat-bubble--loading" aria-label="AI is thinking">
<div className="chat-bubble chat-bubble--ai chat-bubble--loading" aria-label={t("modal.aiThinking")}>
<span className="bubble-label" aria-hidden="true"></span>
<span className="typing-dots">
<span /><span /><span />
@@ -155,8 +158,8 @@ export default function StandardModal({ standard, onClose }) {
)}
{messages.length === 0 && !asking && (
<div className="chat-suggestions" aria-label="Suggested questions">
{getSuggestions(standard).map((s) => (
<div className="chat-suggestions" aria-label={t("modal.suggestionsLabel")}>
{getSuggestions(standard, t).map((s) => (
<button
key={s}
className="suggestion-chip"
@@ -171,25 +174,25 @@ export default function StandardModal({ standard, onClose }) {
</div>
)}
<form className="chat-form" onSubmit={handleAsk} aria-label="Ask a question">
<form className="chat-form" onSubmit={handleAsk} aria-label={t("modal.askAI")}>
<input
ref={inputRef}
className="chat-input"
type="text"
value={question}
onChange={(e) => setQuestion(e.target.value)}
placeholder="Ask a question about this standard…"
placeholder={t("modal.chatPlaceholder")}
maxLength={500}
disabled={asking}
aria-label="Your question"
aria-label={t("modal.questionLabel")}
/>
<button
className="chat-send"
type="submit"
disabled={!question.trim() || asking}
aria-label="Send question"
aria-label={t("modal.sendLabel")}
>
{asking ? "…" : "Ask"}
{asking ? t("modal.sending") : t("modal.askBtn")}
</button>
</form>
</div>
@@ -199,17 +202,17 @@ export default function StandardModal({ standard, onClose }) {
);
}
function getSuggestions(standard) {
function getSuggestions(standard, t) {
const base = [
`What are the key requirements of ${standard.standard_id}?`,
"What materials or tests are specified?",
"What are the delivery or packaging specifications?",
t("modal.suggestion_keyReq", { id: standard.standard_id }),
t("modal.suggestion_materials"),
t("modal.suggestion_delivery"),
];
if (standard.key_sections?.["Chemical Requirements"]) {
base.splice(1, 0, "Summarise the chemical requirements.");
base.splice(1, 0, t("modal.suggestion_chemical"));
}
if (standard.key_sections?.["Physical Requirements"] || standard.key_sections?.["Physical Requirement"]) {
base.splice(1, 0, "What are the physical requirements?");
base.splice(1, 0, t("modal.suggestion_physical"));
}
return base.slice(0, 3);
}