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a2a-source-edit: write frontend/src/a2a.js

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a2a-cloud
2026-07-18 03:14:57 +00:00
parent 3d3a2f15ec
commit 7605d02523
1 changed files with 34 additions and 53 deletions
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87
frontend/src/a2a.js
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@@ -3,10 +3,17 @@ export const CONFIG_URL = import.meta.env.DEV ? "/config.json" : "./config.json"
export async function requestJson(url, init = {}) { export async function requestJson(url, init = {}) {
const response = await fetch(url, { credentials: "same-origin", ...init }); const response = await fetch(url, { credentials: "same-origin", ...init });
const text = await response.text(); const text = await response.text();
const data = text ? JSON.parse(text) : null; let data = null;
try {
data = text ? JSON.parse(text) : null;
} catch {
data = { message: text };
}
if (!response.ok) { if (!response.ok) {
const detail = data && (data.detail || data.message); const detail = data && (data.detail || data.message || data.error);
throw new Error(detail || `request failed: ${response.status}`); const err = new Error(detail || `request failed: ${response.status}`);
err.status = response.status;
throw err;
} }
return data; return data;
} }
@@ -20,10 +27,6 @@ export async function loadSession(config) {
} }
export function signInUrl(config) { export function signInUrl(config) {
// Always prefer authorizeUrl. The dashboard's login cookie is host-locked to
// the dashboard's own origin, so sending the browser straight to loginUrl
// signs the user in *there* and bounces back here still signed out.
// authorizeUrl hands this origin a code it trades for its own session.
const target = config.auth?.authorizeUrl || config.auth?.loginUrl; const target = config.auth?.authorizeUrl || config.auth?.loginUrl;
if (!target) return null; if (!target) return null;
const next = encodeURIComponent( const next = encodeURIComponent(
@@ -32,54 +35,32 @@ export function signInUrl(config) {
return `${target}${target.includes("?") ? "&" : "?"}next=${next}`; return `${target}${target.includes("?") ? "&" : "?"}next=${next}`;
} }
export async function requireSession(config) {
const session = await loadSession(config);
if (!session?.authenticated) {
const target = signInUrl(config);
if (target) window.location.assign(target);
throw new Error("sign in required");
}
return session;
}
export async function callSkill(config, skillName, args) { export async function callSkill(config, skillName, args) {
if (config.auth?.invokeRequiresSession) { return requestJson(`${config.endpoints.invoke}/${encodeURIComponent(skillName)}`, {
await requireSession(config); method: "POST",
} headers: { "content-type": "application/json" },
return requestJson( body: JSON.stringify({ arguments: args }),
`${config.endpoints.invoke}/${encodeURIComponent(skillName)}`, });
{
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ arguments: args }),
},
);
} }
export function sampleValue(schema) { export async function fileToBrowserDocument(file, maxBytes = 128000) {
if (!schema || typeof schema !== "object") return null; if (file.size > maxBytes) {
if ("default" in schema) return schema.default; throw new Error(`${file.name} is too large. Upload files up to ${Math.round(maxBytes / 1000)} KB.`);
if ("const" in schema) return schema.const;
if (Array.isArray(schema.enum) && schema.enum.length) return schema.enum[0];
const type = Array.isArray(schema.type)
? schema.type.find((item) => item !== "null") || schema.type[0]
: schema.type;
if (type === "array") return [];
if (type === "boolean") return false;
if (type === "integer" || type === "number") return 0;
if (type === "string") return "";
const props = schema.properties || {};
if (type === "object" || Object.keys(props).length) {
const required = Array.isArray(schema.required) ? schema.required : Object.keys(props);
return Object.fromEntries(
required.map((key) => [key, sampleValue(props[key])]),
);
} }
return null; const mediaType = file.type || (file.name.endsWith(".json") ? "application/json" : file.name.endsWith(".csv") ? "text/csv" : "text/plain");
} if (!["text/csv", "text/plain", "application/json"].includes(mediaType)) {
throw new Error(`${file.name} must be CSV, JSON, or plain text.`);
export function sampleArgs(skill) { }
const schema = skill?.input_schema || skill?.inputSchema || {}; const buffer = await file.arrayBuffer();
const value = sampleValue(schema); let binary = "";
return value && typeof value === "object" && !Array.isArray(value) ? value : {}; const bytes = new Uint8Array(buffer);
const chunkSize = 0x8000;
for (let i = 0; i < bytes.length; i += chunkSize) {
binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));
}
return {
filename: file.name,
media_type: mediaType,
data_base64: btoa(binary),
};
} }