eve/dist/src/public/channels/slack/attachments.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{createLogger}from"#internal/logging.js";import{evaluateFilePart,formatUploadPolicyViolation,isUploadsDisabled}from"#public/channels/upload-policy.js";import{EveAttachmentError}from"#internal/attachments/errors.js";import{resolveSlackBotToken}from"#public/channels/slack/api.js";const log=createLogger(`slack.attachments`);function collectSlackFileParts(e,t){let n=[];for(let r of e??[]){let e=toSlackFilePart(r,n.length);if(e===null)continue;let i=evaluateFilePart(e,t);if(i!==null){log.warn(`dropped attachment — ${formatUploadPolicyViolation(i)}`,{name:r.name});continue}n.push(e)}return n}function toSlackFilePart(e,t){return e.type===`audio`||e.type===`video`?null:e.url?{type:`file`,mediaType:e.mimeType??`application/octet-stream`,filename:e.name??`attachment-${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,n)=>{if(!isSlackFileUrl(t))return null;let r=n?.state.installationTeamId,i=await resolveSlackBotToken(e.botToken,{teamId:typeof r==`string`?r:void 0}),a=await fetch(t,{headers:{authorization:`Bearer ${i}`}});if(!a.ok)throw new EveAttachmentError({adapterKind:`slack`,kind:`resolver-threw`,message:`Slack file fetch returned HTTP ${a.status}.`});let o=a.headers.get(`content-type`)??void 0;if(o?.split(`;`,1)[0]?.trim().toLowerCase()===`text/html`)throw new EveAttachmentError({adapterKind:`slack`,kind:`resolver-threw`,message:`Slack returned an HTML sign-in page instead of file bytes. The bot token may be missing the files:read scope. Add the scope, reinstall the Slack app, and retry.`});return{bytes:Buffer.from(await a.arrayBuffer()),mediaType:o}}}function isSlackFileUrl(e){let t=URL.parse(e);return t?.protocol===`https:`?t.hostname===`files.slack.com`||(t.hostname===`enterprise.slack.com`||t.hostname.endsWith(`.enterprise.slack.com`))&&t.pathname.startsWith(`/files/`):!1}export{buildSlackTurnMessage,collectInboundFileParts,collectSlackFileParts,createSlackFetchFile};