Review opaque sRGB pairs against a supplied target — Slack plain text review draft

{
  "label": "Supplied agency job and review metadata"
}

{
  "label": "Review opaque sRGB pairs against a supplied target",
  "code": "return (function(context){\n\nfunction fail(reason){throw new Error('input: '+reason);}\nfunction check(schema,value,where){\n if(value===null){if(schema.type==='null'||Array.isArray(schema.type)&&schema.type.includes('null'))return;fail(where+' wrong_type');}\n const type=Array.isArray(schema.type)?schema.type[0]:schema.type;\n if(type==='object'){\n  if(!value||typeof value!=='object'||Array.isArray(value))fail(where+' wrong_type');\n  for(const name of Object.keys(value))if(!Object.hasOwn(schema.properties,name))fail(where+' unknown_field');\n  for(const name of schema.required)if(!Object.hasOwn(value,name))fail(where+' missing_field');\n  for(const [name,shape]of Object.entries(schema.properties))check(shape,value[name],where+'.'+name);\n }else if(type==='array'){\n  if(!Array.isArray(value)||value.length>schema.maxItems)fail(where+' array_bound');\n  for(const item of value)check(schema.items,item,where+'[]');\n }else if(type==='string'){if(typeof value!=='string'||value.length>schema.maxLength)fail(where+' string_bound');}\n else if(type==='integer'){if(!Number.isSafeInteger(value)||value<schema.minimum||value>schema.maximum)fail(where+' integer_bound');}\n else if(type==='boolean'){if(typeof value!=='boolean')fail(where+' wrong_type');}\n else fail(where+' unsupported_type');\n}\nfunction id(value){if(typeof value!=='string'||!value||value.trim()!==value)fail('noncanonical_identity');return value;}\nfunction unique(values,reason){if(new Set(values).size!==values.length)fail(reason);}\nfunction safeAdd(a,b){if(a>Number.MAX_SAFE_INTEGER-b)fail('unsafe_sum');return a+b;}\nfunction day(value){if(!/^\\d{4}-\\d{2}-\\d{2}$/.test(value))fail('invalid_calendar_day');const ms=Date.parse(value+'T00:00:00Z');if(!Number.isFinite(ms)||new Date(ms).toISOString().slice(0,10)!==value)fail('invalid_calendar_day');return ms;}\nfunction refKey(ref){id(ref.assetId);if(ref.version<1)fail('positive_version_required');return JSON.stringify([ref.assetId,ref.version]);}\nfunction refValue(key){const pair=JSON.parse(key);return {assetId:pair[0],version:pair[1]};}\nfunction sortedRefs(keys){return [...keys].sort().map(refValue);}\n\nfunction lexIds(a,b){for(let i=0;i<Math.min(a.length,b.length);i++){if(a[i]<b[i])return -1;if(a[i]>b[i])return 1;}return a.length-b.length;}\nfunction maxSubset(rows,idField,feasible){let best=-1,ids=[],ties=0;for(let mask=0;mask<2**rows.length;mask++){const chosen=rows.filter((_,i)=>mask&(1<<i));if(!feasible(chosen))continue;const value=chosen.reduce((n,r)=>n+r.valuePoints,0),current=chosen.map(r=>r[idField]).sort();if(value>best){best=value;ids=current;ties=1;}else if(value===best){ties++;if(lexIds(current,ids)<0)ids=current;}}return {ids,value:best,ties};}\nfunction rat(n,d){if(d===0n)fail('zero_denominator');if(d<0n){n=-n;d=-d;}let a=n<0n?-n:n,b=d;while(b){const next=a%b;a=b;b=next;}return [n/a,d/a];}\nfunction ratAdd(a,b){return rat(a[0]*b[1]+b[0]*a[1],a[1]*b[1]);}\nfunction ratSub(a,b){return rat(a[0]*b[1]-b[0]*a[1],a[1]*b[1]);}\nfunction ratMul(a,b){return rat(a[0]*b[0],a[1]*b[1]);}\nfunction ratText(a){return a[0].toString()+'/'+a[1].toString();}\n\n\ncheck({\"type\":\"object\",\"properties\":{\"scopeId\":{\"type\":\"string\",\"maxLength\":128},\"pairs\":{\"type\":\"array\",\"items\":{\"type\":\"object\",\"properties\":{\"pairId\":{\"type\":\"string\",\"maxLength\":128},\"foreground\":{\"type\":\"string\",\"maxLength\":7},\"background\":{\"type\":\"string\",\"maxLength\":7},\"targetRatioBps\":{\"type\":\"integer\",\"minimum\":10000,\"maximum\":210000}},\"required\":[\"pairId\",\"foreground\",\"background\",\"targetRatioBps\"],\"additionalProperties\":false},\"maxItems\":30}},\"required\":[\"scopeId\",\"pairs\"],\"additionalProperties\":false},context.input,\"input\");\nconst result=(function contrast(x){\n id(x.scopeId);unique(x.pairs.map(p=>id(p.pairId)),'duplicate_pair_id');\n const luminance=hex=>{if(!/^#[0-9a-fA-F]{6}$/.test(hex))fail('invalid_opaque_hex');const c=[1,3,5].map(at=>parseInt(hex.slice(at,at+2),16)/255).map(v=>v<=0.04045?v/12.92:((v+0.055)/1.055)**2.4);return c[0]*0.2126+c[1]*0.7152+c[2]*0.0722;};\n return {rows:x.pairs.map(p=>{const a=luminance(p.foreground),b=luminance(p.background),ratio=(Math.max(a,b)+0.05)/(Math.min(a,b)+0.05);return {pairId:p.pairId,ratioBpsRounded:Math.round(ratio*10000),meetsSuppliedTarget:ratio>=p.targetRatioBps/10000};}).sort((a,b)=>a.pairId<b.pairId?-1:a.pairId>b.pairId?1:0)};\n})(context.input);\ncheck({\"type\":\"object\",\"properties\":{\"rows\":{\"type\":\"array\",\"items\":{\"type\":\"object\",\"properties\":{\"pairId\":{\"type\":\"string\",\"maxLength\":128},\"ratioBpsRounded\":{\"type\":\"integer\",\"minimum\":10000,\"maximum\":210000},\"meetsSuppliedTarget\":{\"type\":\"boolean\"}},\"required\":[\"pairId\",\"ratioBpsRounded\",\"meetsSuppliedTarget\"],\"additionalProperties\":false},\"maxItems\":30}},\"required\":[\"rows\"],\"additionalProperties\":false},result,\"output\");\nreturn result;\n})({input:context.input.jobInput});\n",
  "outputVar": "jobResult",
  "timeout": 3000,
  "memoryLimit": 64
}

{
  "label": "Slack plain text review draft",
  "code": "const jobResult=context.jobResult;\nconst delivery=(function(context){\nreturn ((function(originalResult,metadata,destination){\nfunction stableResult(value,depth=0){\n  if(depth>64)throw new Error('Result nesting exceeds 64');\n  if(value===null||typeof value==='string'||typeof value==='boolean')return JSON.stringify(value);\n  if(typeof value==='number'&&Number.isFinite(value))return JSON.stringify(value);\n  if(Array.isArray(value)){\n    if(Object.keys(value).length!==value.length||Array.from({length:value.length},(_,i)=>i).some(i=>!Object.hasOwn(value,i)))throw new Error('Result contains sparse data');\n    return '['+value.map(item=>stableResult(item,depth+1)).join(',')+']';\n  }\n  if(value&&typeof value==='object')return '{'+Object.keys(value).sort().map(key=>JSON.stringify(key)+':'+stableResult(value[key],depth+1)).join(',')+'}';\n  throw new Error('Result is not JSON data');\n}\nfunction utf8Length(text){\n  let bytes=0;\n  for(let i=0;i<text.length;i++){\n    const code=text.charCodeAt(i);\n    if(code<128)bytes++;else if(code<2048)bytes+=2;\n    else if(code>=55296&&code<=56319&&i+1<text.length&&text.charCodeAt(i+1)>=56320&&text.charCodeAt(i+1)<=57343){bytes+=4;i++;}\n    else bytes+=3;\n  }\n  return bytes;\n}\nfunction chunkText(text,maximum){\n  const chunks=[];\n  for(let start=0;start<text.length;){let end=Math.min(start+maximum,text.length);const last=text.charCodeAt(end-1),next=text.charCodeAt(end);if(end<text.length&&last>=55296&&last<=56319&&next>=56320&&next<=57343)end--;chunks.push(text.slice(start,end));start=end;}\n  return chunks;\n}\nfunction deliveryState(rendererId,originalResult,metadata,destination,destinationKeys){\n  const output={rendererId,status:'HELD',originalResult,drafts:[],holds:[],escapeReport:[]};\n  const hold=(code,message)=>{output.holds.push({code,message});return {output,json:''};};\n  const object=value=>value&&typeof value==='object'&&!Array.isArray(value);\n  const exact=(value,keys)=>object(value)&&Object.keys(value).length===keys.length&&keys.every(key=>Object.hasOwn(value,key));\n  const keys=['workflowId','canonicalIntentId','title','reviewUrl'],maxima=[128,200,200,1000];\n  if(!exact(metadata,keys)||keys.some((key,i)=>typeof metadata[key]!=='string'||!metadata[key].length||metadata[key].length>maxima[i]||/[\\u0000-\\u001f\\u007f]/.test(metadata[key]))||!/^https?:\\/\\/[^\\s<>\"']+$/.test(metadata.reviewUrl))return hold('INVALID_METADATA','Metadata must provide bounded workflowId, canonicalIntentId, title and an HTTP(S) reviewUrl.');\n  if(!exact(destination,destinationKeys)||destinationKeys.some(key=>typeof destination[key]!=='string'||!destination[key].length||destination[key].length>200||destination[key]!==destination[key].trim()||/[\\u0000-\\u001f\\u007f]/.test(destination[key])))return hold('INVALID_DESTINATION','Destination fields must be exactly: '+destinationKeys.join(', ')+'.');\n  let json;\n  try{if(!object(originalResult))throw new Error('Primary result must be a JSON object');json=stableResult(originalResult);}catch(error){return hold('INVALID_RESULT',error.message);}\n  if(json.length>32768||utf8Length(json)>65536)return hold('RESULT_BOUND_EXCEEDED','Original result exceeds this renderer profile; full original result is retained.');\n  return {output,json};\n}\nreturn (function slackBlockKitReview(originalResult,metadata,destination){\n  const state=deliveryState('slack-block-kit-review',originalResult,metadata,destination,['channelId']);\n  if(state.output.holds.length)return state.output;\n  const section=text=>({type:'section',text:{type:'plain_text',text}});\n  const blocks=[section(metadata.title),section('Workflow: '+metadata.workflowId+'\\nCanonical job: '+metadata.canonicalIntentId),section('Review: '+metadata.reviewUrl),...chunkText(state.json,3000).map(section)];\n  const draft={channel:destination.channelId,blocks};\n  if(blocks.length>50||blocks.some(block=>!block.text.text.length||block.text.text.length>3000)||utf8Length(JSON.stringify(draft))>131072){state.output.holds.push({code:'TARGET_BOUND_EXCEEDED',message:'Slack draft exceeds the block/text or Vora payload profile bound; no draft is emitted.'});return state.output;}\n  state.output.status='PREPARED';state.output.drafts=[draft];return state.output;\n})(originalResult,metadata,destination);\n}))(context.input.jobResult,context.input.deliveryMetadata.metadata,context.input.deliveryMetadata.destination);\n\n})({input:{jobResult,deliveryMetadata:context.input.deliveryMetadata}});\nreturn {jobResult,delivery};\n",
  "outputVar": "result",
  "timeout": 3000,
  "memoryLimit": 64
}