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eve

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

github.com/vercel/eve

vercel/eve

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import{parseInputResponse}from"#shared/input.js";import{SLACK_SECTION_TEXT_MAX_LENGTH,truncateCardBodyText,truncateModalTitle,truncatePlainText,truncateSectionText}from"#public/channels/slack/limits.js";const HITL_ACTION_PREFIX=`eve_input:`,HITL_FREEFORM_ACTION_PREFIX=`eve_input_freeform:`,HITL_FREEFORM_MODAL_CALLBACK_ID=`eve_input_freeform_submit`,HITL_FREEFORM_MODAL_BLOCK_ID=`eve_freeform_block`,HITL_FREEFORM_MODAL_ACTION_ID=`eve_freeform_text`,BUTTON_ACTION_ID_RE=/^(?:(?<kind>tool-approval):)?(?<requestId>.+):button:\d+$/u,TOOL_INPUT_SUFFIX="\n```";function deriveHitlResponse(e){if(!e.actionId.startsWith(`eve_input:`))return null;let t=e.actionId.slice(10);if(e.selectedOptionValue!==void 0){let{kind:n,requestId:r}=splitEncodedRequest(t);return r?n===`tool-approval`?{kind:n,response:parseInputResponse({optionId:e.selectedOptionValue,requestId:r})}:{response:parseInputResponse({optionId:e.selectedOptionValue,requestId:r})}:null}if(e.value!==void 0){let n=BUTTON_ACTION_ID_RE.exec(t),r=n?.groups?.requestId;return r?n.groups?.kind===`tool-approval`?{kind:`tool-approval`,response:parseInputResponse({optionId:e.value,requestId:r})}:{response:parseInputResponse({optionId:e.value,requestId:r})}:null}return null}function splitEncodedRequest(e){return e.startsWith(`tool-approval:`)?{kind:`tool-approval`,requestId:e.slice(14)}:{requestId:e}}function isHitlAction(e){return e.startsWith(HITL_ACTION_PREFIX)}function renderInputRequestBlocks(e){let t={text:{text:truncateSectionText(e.prompt),type:`mrkdwn`},type:`section`},n=renderInputRequestDetailBlocks(e),r=`${HITL_ACTION_PREFIX}${e.kind===`tool-approval`?`tool-approval:`:``}${e.requestId}`,i=e.options,a=e.allowFreeform===!0||!i||i.length===0;if(i&&i.length>0&&e.display===`select`){let e=i.length<=6?{type:`radio_buttons`,action_id:r,options:i.map(buildOption)}:{type:`static_select`,action_id:r,options:i.map(buildOption),placeholder:{type:`plain_text`,text:`Choose an option`}};return[t,...n,{type:`actions`,elements:[e]}]}if(i&&i.length>0){let t=renderInputRequestCardBlock(e,r),n=renderToolInputContainerBlock(e);return n===void 0?[t]:[t,n]}return a?[t,...n,{type:`actions`,elements:[{type:`button`,action_id:`${HITL_FREEFORM_ACTION_PREFIX}${e.requestId}`,text:{type:`plain_text`,text:`Type your answer`},style:`primary`,value:e.requestId}]}]:[t]}function renderInputRequestPostParts(e){let t=renderInputRequestBlocks(e),n=t[0];return!isApprovalRequest(e)||!isBlockType(n,`card`)||t.length===1?{controls:{blocks:t,text:formatInputRequestFallbackText(e)}}:{controls:{blocks:[n],text:e.prompt},details:{blocks:t.slice(1),text:formatInputRequestFallbackText(e)}}}function formatInputRequestFallbackText(e){let t=formatToolInputDetails(e);return t===void 0?e.prompt:`${e.prompt}\n${t}`}function buildFreeformModalView(e){let t=e.prompt?truncateModalTitle(e.prompt):`Your answer`,n=e.prompt?[{type:`section`,text:{type:`mrkdwn`,text:truncateSectionText(e.prompt)}}]:[];return{type:`modal`,callback_id:HITL_FREEFORM_MODAL_CALLBACK_ID,private_metadata:JSON.stringify(e.metadata),title:{type:`plain_text`,text:t},submit:{type:`plain_text`,text:`Submit`},close:{type:`plain_text`,text:`Cancel`},blocks:[...n,{type:`input`,block_id:HITL_FREEFORM_MODAL_BLOCK_ID,element:{type:`plain_text_input`,action_id:HITL_FREEFORM_MODAL_ACTION_ID,multiline:!0,placeholder:{type:`plain_text`,text:`Type your answer here...`}},label:{type:`plain_text`,text:`Answer`}}]}}function isFreeformAction(e){return e.startsWith(HITL_FREEFORM_ACTION_PREFIX)}function freeformRequestIdFromActionId(e){if(!isFreeformAction(e))return;let t=e.slice(19);return t.length>0?t:void 0}function buildCardButton(e,t,n){let r={type:`button`,text:{type:`plain_text`,text:truncatePlainText(e.label),emoji:!1},action_id:`${t}:button:${n}`,value:e.id};return(e.style===`primary`||e.style===`danger`)&&(r.style=e.style),r}function buildOption(e){let t={text:{text:truncatePlainText(e.label),type:`plain_text`},value:e.id},n=truncatePlainText(e.description);return n&&n.length>0&&(t.description={text:n,type:`plain_text`}),t}function renderInputRequestCardBlock(e,t){return{type:`card`,body:{type:`mrkdwn`,text:truncateCardBodyText(`*${e.prompt}*`),verbatim:!1},actions:cardButtonOptions(e).map((e,n)=>buildCardButton(e,t,n))}}function cardButtonOptions(e){let t=e.options??[];if(!isApprovalRequest(e))return t.map(toCardButtonOption);let n=t.find(e=>e.id===`approve`),r=t.find(e=>e.id===`cancel`);return!n||!r?t.map(toCardButtonOption):[{id:r.id,label:`Cancel`},{id:n.id,label:`Approve`,style:`primary`}]}function toCardButtonOption(e){let t={id:e.id,label:e.label};return e.style===`primary`||e.style===`danger`?{...t,style:e.style}:t}function buildAnsweredBlocks(e){let t=[];for(let n of e.promptBlocks)n!=null&&t.push(n);let n=truncateWithEllipsis(e.answerLabel,SLACK_SECTION_TEXT_MAX_LENGTH-20-1);return t.push({type:`section`,text:{type:`mrkdwn`,text:`:white_check_mark: *${n}*`}}),e.userId&&e.userId.length>0&&t.push({type:`context`,elements:[{type:`mrkdwn`,text:`Answered by <@${e.userId}>`}]}),t}function renderInputRequestDetailBlocks(e){let t=formatToolInputDetails(e);return t===void 0?[]:[{type:`section`,text:{type:`mrkdwn`,text:t}}]}function renderToolInputContainerBlock(e){let t=formatToolInputContainerText(e);if(t!==void 0)return{type:`container`,title:{type:`plain_text`,text:`Tool input`},is_collapsible:!0,default_collapsed:!1,child_blocks:[{type:`section`,text:{type:`mrkdwn`,text:t}}]}}function formatToolInputContainerText(e){if(!isApprovalRequest(e))return;let t=JSON.stringify(e.action.input,null,2);return t===`{}`?void 0:`\`\`\` ${truncateWithEllipsis(t,SLACK_SECTION_TEXT_MAX_LENGTH-4-4)}${TOOL_INPUT_SUFFIX}`}function formatToolInputDetails(e){if(!isApprovalRequest(e))return;let t=JSON.stringify(e.action.input,null,2);return t===`{}`?void 0:`*Tool input* \`\`\` ${truncateWithEllipsis(t,SLACK_SECTION_TEXT_MAX_LENGTH-17-4)}${TOOL_INPUT_SUFFIX}`}function truncateWithEllipsis(e,t){if(e.length<=t)return e;let n=Math.max(0,t-3);return`${e.slice(0,n).trimEnd()}...`}function isBlockType(e,t){return typeof e==`object`&&!!e&&e.type===t}function isApprovalRequest(e){return e.kind===`tool-approval`}export{HITL_ACTION_PREFIX,HITL_FREEFORM_ACTION_PREFIX,HITL_FREEFORM_MODAL_ACTION_ID,HITL_FREEFORM_MODAL_BLOCK_ID,HITL_FREEFORM_MODAL_CALLBACK_ID,buildAnsweredBlocks,buildFreeformModalView,deriveHitlResponse,formatInputRequestFallbackText,freeformRequestIdFromActionId,isFreeformAction,isHitlAction,renderInputRequestBlocks,renderInputRequestPostParts};