eve
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Filesystem-first framework for durable backend AI agents that run anywhere.
1 lines • 2.66 kB
JavaScript
import{createLogger}from"#internal/logging.js";import{evaluateFilePart,formatUploadPolicyViolation,isUploadsDisabled}from"#public/channels/upload-policy.js";import{resolveSlackBotToken}from"#public/channels/slack/api.js";const log=createLogger(`slack.attachments`);function collectSlackFileParts(e,r){let i=[];for(let o of e??[]){let e=toSlackFilePart(o,i.length);if(e===null)continue;let s=evaluateFilePart(e,r);if(s!==null){log.warn(`dropped attachment — ${formatUploadPolicyViolation(s)}`,{name:o.name});continue}i.push(e)}return i}function toSlackFilePart(e,t){return e.type===`audio`||e.type===`video`?null:e.url?{type:`file`,mediaType:e.mimeType??`application/octet-stream`,filename:e.name??`attachment-${t}`,data:new URL(e.url)}:(log.warn(`dropped attachment — no url available`,{name:e.name}),null)}async function collectInboundFileParts(e){let t=collectSlackFileParts(e.mention.attachments,e.policy);if(t.length>0)return t;if(isUploadsDisabled(e.policy))return[];if(e.thread.recentMessages.length===0)try{await e.thread.refresh()}catch(e){return log.warn(`slack thread refresh failed for attachment collection`,{error:e}),[]}let n=e.thread.recentMessages;for(let t=n.length-1;t>=0;--t){let r=n[t];if(!r||r.isMe)continue;let i=r.raw,a=collectSlackFileParts(extractAttachmentsFromRaw(i?.files),e.policy);return a.length>0?a:[]}return[]}function extractAttachmentsFromRaw(e){return Array.isArray(e)?e.map(e=>{let t=typeof e.mimetype==`string`?e.mimetype:void 0;return{id:typeof e.id==`string`?e.id:``,type:inferAttachmentType(t),url:typeof e.url_private==`string`?e.url_private:void 0,name:typeof e.name==`string`?e.name:void 0,mimeType:t,size:typeof e.size==`number`?e.size:void 0}}):[]}function inferAttachmentType(e){return e===void 0?`file`:e.startsWith(`image/`)?`image`:e.startsWith(`video/`)?`video`:e.startsWith(`audio/`)?`audio`:`file`}function buildSlackTurnMessage(e,t){return t.length===0?e:e.trim().length===0?[...t]:[{type:`text`,text:e},...t]}function createSlackFetchFile(e){return async t=>{if(!isSlackFileUrl(t))return null;let n=await resolveSlackBotToken(e.botToken),r=await fetch(t,{headers:{authorization:`Bearer ${n}`}});if(!r.ok)throw Error(`Slack file fetch returned HTTP ${r.status} for ${t}.`);return{bytes:Buffer.from(await r.arrayBuffer()),mediaType:r.headers.get(`content-type`)??void 0}}}function isSlackFileUrl(e){let t=URL.parse(e);return t?.protocol===`https:`?t.hostname===`files.slack.com`?!0:(t.hostname===`enterprise.slack.com`||t.hostname.endsWith(`.enterprise.slack.com`))&&t.pathname.startsWith(`/files/`):!1}export{buildSlackTurnMessage,collectInboundFileParts,collectSlackFileParts,createSlackFetchFile};