import{buildSessionHandle}from"#channel/session.js";import{getAdapterKind}from"#channel/adapter.js";import{deserializeUrlFilePart,isSerializedUrlFilePart}from"#internal/attachments/url-refs.js";import{SandboxKey}from"#context/keys.js";import{basename}from"node:path";import{toErrorMessage}from"#shared/errors.js";import{createHash}from"node:crypto";import{loadContext}from"#context/container.js";import{ChannelKey}from"#runtime/sessions/runtime-context-keys.js";import{buildAdapterContext}from"#channel/adapter-context.js";import{fileDataToBytes}from"#internal/attachments/data.js";import{EveAttachmentError}from"#internal/attachments/errors.js";import{decodeSandboxRef,encodeSandboxRef,isSandboxRefUrl}from"#internal/attachments/sandbox-refs.js";const ATTACHMENTS_ROOT=`/workspace/attachments`,UNSAFE_FILENAME_CHARS=/[^\w.-]+/g;async function stageAttachmentsForAdapter(e,t,n){if(typeof e==`string`)return e;let r=reconstitueFilePartUrls(e);return Promise.all(r.map(async e=>e.type===`file`?stageFilePart(e,t,n):e))}async function stageAttachmentsToSandbox(t){if(typeof t==`string`||!Array.isArray(t)||!hasFileParts(t))return t;let n=loadContext(),r=n.get(SandboxKey);if(r===void 0)return t;let a=await r.get();if(a===null)return t;let o=n.get(ChannelKey);return stageAttachmentsForAdapter(t,a,o?buildAdapterContext(o,n):{ctx:n,state:{},session:buildSessionHandle(n)})}async function hydrateSandboxAttachments(e){if(!messagesContainSandboxRef(e))return e;let t=loadContext().get(SandboxKey);if(t===void 0)throw Error(`Cannot hydrate sandbox-ref FilePart: no SandboxKey is bound on the active Eve context. Hydration must run inside a step scope with the framework sandbox provider installed.`);let n=await t.get();if(n===null)throw Error(`Cannot hydrate sandbox-ref FilePart: SandboxKey is bound but no active sandbox session is available.`);return Promise.all(e.map(async e=>{if(!messageContainsSandboxRef(e))return e;let t=await hydrateMessageContent(e.content,n);return{...e,content:t}}))}function hasFileParts(e){for(let t of e)if(t.type===`file`)return!0;return!1}function messagesContainSandboxRef(e){for(let t of e)if(messageContainsSandboxRef(t))return!0;return!1}function messageContainsSandboxRef(e){let t=e.content;if(!Array.isArray(t))return!1;for(let e of t)if(isSandboxRefFilePart(e))return!0;return!1}function isSandboxRefFilePart(e){return typeof e==`object`&&!!e&&e.type===`file`&&isSandboxRefUrl(e.data)}async function hydrateMessageContent(e,t){return Array.isArray(e)?Promise.all(e.map(async e=>{if(!isSandboxRefFilePart(e))return e;let n=e,r=decodeSandboxRef(n.data);if(!shouldInlineSandboxRefAsBytes(r))return renderSandboxRefAsTextPart(r);let i=await t.readBinaryFile({path:r.path});if(i===null)throw Error(`Sandbox-ref FilePart references missing file: "${r.path}". The staging pipeline invariant (every eve-sandbox: ref has bytes on disk) was violated.`);return{...n,data:i,mediaType:r.mediaType}})):e}function shouldInlineSandboxRefAsBytes(e){return e.mediaType.startsWith(`image/`)?e.size<=3145728:e.mediaType===`application/pdf`?e.size<=20971520:!1}function renderSandboxRefAsTextPart(e){return{text:`Attached file ${e.path} (${e.mediaType})`,type:`text`}}async function stageFilePart(e,t,n){if(isSandboxRefUrl(e.data))return e;if(e.data instanceof URL&&e.data.protocol!==`data:`){let r=await tryFetchFile(e.data.href,n);return r===null?e:stageResolvedBytes(e,r,t)}let r=await fileDataToBytes(e.data);return r===null?e:stageResolvedBytes(e,{bytes:r},t)}async function stageResolvedBytes(e,t,n){let r=t.bytes,i=sha256Prefix(r),a=t.mediaType??e.mediaType??`application/octet-stream`,o=`${ATTACHMENTS_ROOT}/${i}/${safeFilename(t.filename??e.filename,i)}`;await n.writeBinaryFile({content:r,path:o});let s=n.resolvePath(o);return{...e,data:encodeSandboxRef({mediaType:a,path:s,size:r.byteLength}),filename:s,mediaType:a}}async function tryFetchFile(e,n){let r=n.ctx.get(ChannelKey);if(r?.fetchFile===void 0)return null;let i=getAdapterKind(r);try{let t=await r.fetchFile(e);return t===null?null:Buffer.isBuffer(t)?{bytes:t}:t}catch(e){throw e instanceof EveAttachmentError?e:new EveAttachmentError({adapterKind:i,cause:e,kind:`resolver-threw`,message:`fetchFile for adapter kind="${i}" threw: ${toErrorMessage(e)}`})}}function reconstitueFilePartUrls(e){let t=!1,i=e.map(e=>e.type===`file`&&isSerializedUrlFilePart(e.data)?(t=!0,{...e,data:deserializeUrlFilePart(e.data)}):e);return t?i:e}function sha256Prefix(e){return createHash(`sha256`).update(e).digest(`hex`).slice(0,16)}function safeFilename(e,t){if(e===void 0)return`file-${t}`;let n=basename(e).replace(UNSAFE_FILENAME_CHARS,`_`);return n.length>0?n:`file-${t}`}export{ATTACHMENTS_ROOT,hydrateSandboxAttachments,stageAttachmentsForAdapter,stageAttachmentsToSandbox};