init claude-code

2026-04-01 17:32:37 +02:00
commit 73b208c009
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+import { queryHaiku } from '../../services/api/claude.js'
+import { logError } from '../log.js'
+import { extractTextContent } from '../messages.js'
+import { asSystemPrompt } from '../systemPromptType.js'
+
+export type DateTimeParseResult =
+  | { success: true; value: string }
+  | { success: false; error: string }
+
+/**
+ * Parse natural language date/time input into ISO 8601 format using Haiku.
+ *
+ * Examples:
+ * - "tomorrow at 3pm" → "2025-10-15T15:00:00-07:00"
+ * - "next Monday" → "2025-10-20"
+ * - "in 2 hours" → "2025-10-14T12:30:00-07:00"
+ *
+ * @param input The natural language date/time string from the user
+ * @param format Whether to parse as 'date' (YYYY-MM-DD) or 'date-time' (full ISO 8601 with time)
+ * @param signal AbortSignal for cancellation
+ * @returns Parsed ISO 8601 string or error message
+ */
+export async function parseNaturalLanguageDateTime(
+  input: string,
+  format: 'date' | 'date-time',
+  signal: AbortSignal,
+): Promise<DateTimeParseResult> {
+  // Get current datetime with timezone for context
+  const now = new Date()
+  const currentDateTime = now.toISOString()
+  const timezoneOffset = -now.getTimezoneOffset() // minutes, inverted sign
+  const tzHours = Math.floor(Math.abs(timezoneOffset) / 60)
+  const tzMinutes = Math.abs(timezoneOffset) % 60
+  const tzSign = timezoneOffset >= 0 ? '+' : '-'
+  const timezone = `${tzSign}${String(tzHours).padStart(2, '0')}:${String(tzMinutes).padStart(2, '0')}`
+  const dayOfWeek = now.toLocaleDateString('en-US', { weekday: 'long' })
+
+  // Build system prompt with context
+  const systemPrompt = asSystemPrompt([
+    'You are a date/time parser that converts natural language into ISO 8601 format.',
+    'You MUST respond with ONLY the ISO 8601 formatted string, with no explanation or additional text.',
+    'If the input is ambiguous, prefer future dates over past dates.',
+    "For times without dates, use today's date.",
+    'For dates without times, do not include a time component.',
+    'If the input is incomplete or you cannot confidently parse it into a valid date, respond with exactly "INVALID" (nothing else).',
+    'Examples of INVALID input: partial dates like "2025-01-", lone numbers like "13", gibberish.',
+    'Examples of valid natural language: "tomorrow", "next Monday", "jan 1st 2025", "in 2 hours", "yesterday".',
+  ])
+
+  // Build user prompt with rich context
+  const formatDescription =
+    format === 'date'
+      ? 'YYYY-MM-DD (date only, no time)'
+      : `YYYY-MM-DDTHH:MM:SS${timezone} (full date-time with timezone)`
+
+  const userPrompt = `Current context:
+- Current date and time: ${currentDateTime} (UTC)
+- Local timezone: ${timezone}
+- Day of week: ${dayOfWeek}
+
+User input: "${input}"
+
+Output format: ${formatDescription}
+
+Parse the user's input into ISO 8601 format. Return ONLY the formatted string, or "INVALID" if the input is incomplete or unparseable.`
+
+  try {
+    const result = await queryHaiku({
+      systemPrompt,
+      userPrompt,
+      signal,
+      options: {
+        querySource: 'mcp_datetime_parse',
+        agents: [],
+        isNonInteractiveSession: false,
+        hasAppendSystemPrompt: false,
+        mcpTools: [],
+        enablePromptCaching: false,
+      },
+    })
+
+    // Extract text from result
+    const parsedText = extractTextContent(result.message.content).trim()
+
+    // Validate that we got something usable
+    if (!parsedText || parsedText === 'INVALID') {
+      return {
+        success: false,
+        error: 'Unable to parse date/time from input',
+      }
+    }
+
+    // Basic sanity check - should start with a digit (year)
+    if (!/^\d{4}/.test(parsedText)) {
+      return {
+        success: false,
+        error: 'Unable to parse date/time from input',
+      }
+    }
+
+    return { success: true, value: parsedText }
+  } catch (error) {
+    // Log error but don't expose details to user
+    logError(error)
+    return {
+      success: false,
+      error:
+        'Unable to parse date/time. Please enter in ISO 8601 format manually.',
+    }
+  }
+}
+
+/**
+ * Check if a string looks like it might be an ISO 8601 date/time.
+ * Used to decide whether to attempt NL parsing.
+ */
+export function looksLikeISO8601(input: string): boolean {
+  // ISO 8601 date: YYYY-MM-DD
+  // ISO 8601 datetime: YYYY-MM-DDTHH:MM:SS...
+  return /^\d{4}-\d{2}-\d{2}(T|$)/.test(input.trim())
+}
@@ -0,0 +1,336 @@
+import type {
+  EnumSchema,
+  MultiSelectEnumSchema,
+  PrimitiveSchemaDefinition,
+  StringSchema,
+} from '@modelcontextprotocol/sdk/types.js'
+import { z } from 'zod/v4'
+import { jsonStringify } from '../slowOperations.js'
+import { plural } from '../stringUtils.js'
+import {
+  looksLikeISO8601,
+  parseNaturalLanguageDateTime,
+} from './dateTimeParser.js'
+
+export type ValidationResult = {
+  value?: string | number | boolean
+  isValid: boolean
+  error?: string
+}
+
+const STRING_FORMATS = {
+  email: {
+    description: 'email address',
+    example: 'user@example.com',
+  },
+  uri: {
+    description: 'URI',
+    example: 'https://example.com',
+  },
+  date: {
+    description: 'date',
+    example: '2024-03-15',
+  },
+  'date-time': {
+    description: 'date-time',
+    example: '2024-03-15T14:30:00Z',
+  },
+}
+
+/**
+ * Check if schema is a single-select enum (either legacy `enum` format or new `oneOf` format)
+ */
+export const isEnumSchema = (
+  schema: PrimitiveSchemaDefinition,
+): schema is EnumSchema => {
+  return schema.type === 'string' && ('enum' in schema || 'oneOf' in schema)
+}
+
+/**
+ * Check if schema is a multi-select enum (`type: "array"` with `items.enum` or `items.anyOf`)
+ */
+export function isMultiSelectEnumSchema(
+  schema: PrimitiveSchemaDefinition,
+): schema is MultiSelectEnumSchema {
+  return (
+    schema.type === 'array' &&
+    'items' in schema &&
+    typeof schema.items === 'object' &&
+    schema.items !== null &&
+    ('enum' in schema.items || 'anyOf' in schema.items)
+  )
+}
+
+/**
+ * Get values from a multi-select enum schema
+ */
+export function getMultiSelectValues(schema: MultiSelectEnumSchema): string[] {
+  if ('anyOf' in schema.items) {
+    return schema.items.anyOf.map(item => item.const)
+  }
+  if ('enum' in schema.items) {
+    return schema.items.enum
+  }
+  return []
+}
+
+/**
+ * Get display labels from a multi-select enum schema
+ */
+export function getMultiSelectLabels(schema: MultiSelectEnumSchema): string[] {
+  if ('anyOf' in schema.items) {
+    return schema.items.anyOf.map(item => item.title)
+  }
+  if ('enum' in schema.items) {
+    return schema.items.enum
+  }
+  return []
+}
+
+/**
+ * Get label for a specific value in a multi-select enum
+ */
+export function getMultiSelectLabel(
+  schema: MultiSelectEnumSchema,
+  value: string,
+): string {
+  const index = getMultiSelectValues(schema).indexOf(value)
+  return index >= 0 ? (getMultiSelectLabels(schema)[index] ?? value) : value
+}
+
+/**
+ * Get enum values from EnumSchema (handles both legacy `enum` and new `oneOf` formats)
+ */
+export function getEnumValues(schema: EnumSchema): string[] {
+  if ('oneOf' in schema) {
+    return schema.oneOf.map(item => item.const)
+  }
+  if ('enum' in schema) {
+    return schema.enum
+  }
+  return []
+}
+
+/**
+ * Get enum display labels from EnumSchema
+ */
+export function getEnumLabels(schema: EnumSchema): string[] {
+  if ('oneOf' in schema) {
+    return schema.oneOf.map(item => item.title)
+  }
+  if ('enum' in schema) {
+    return ('enumNames' in schema ? schema.enumNames : undefined) ?? schema.enum
+  }
+  return []
+}
+
+/**
+ * Get label for a specific enum value
+ */
+export function getEnumLabel(schema: EnumSchema, value: string): string {
+  const index = getEnumValues(schema).indexOf(value)
+  return index >= 0 ? (getEnumLabels(schema)[index] ?? value) : value
+}
+
+function getZodSchema(schema: PrimitiveSchemaDefinition): z.ZodTypeAny {
+  if (isEnumSchema(schema)) {
+    const [first, ...rest] = getEnumValues(schema)
+    if (!first) {
+      return z.never()
+    }
+    return z.enum([first, ...rest])
+  }
+  if (schema.type === 'string') {
+    let stringSchema = z.string()
+    if (schema.minLength !== undefined) {
+      stringSchema = stringSchema.min(schema.minLength, {
+        message: `Must be at least ${schema.minLength} ${plural(schema.minLength, 'character')}`,
+      })
+    }
+    if (schema.maxLength !== undefined) {
+      stringSchema = stringSchema.max(schema.maxLength, {
+        message: `Must be at most ${schema.maxLength} ${plural(schema.maxLength, 'character')}`,
+      })
+    }
+    switch (schema.format) {
+      case 'email':
+        stringSchema = stringSchema.email({
+          message: 'Must be a valid email address, e.g. user@example.com',
+        })
+        break
+      case 'uri':
+        stringSchema = stringSchema.url({
+          message: 'Must be a valid URI, e.g. https://example.com',
+        })
+        break
+      case 'date':
+        stringSchema = stringSchema.date(
+          'Must be a valid date, e.g. 2024-03-15, today, next Monday',
+        )
+        break
+      case 'date-time':
+        stringSchema = stringSchema.datetime({
+          offset: true,
+          message:
+            'Must be a valid date-time, e.g. 2024-03-15T14:30:00Z, tomorrow at 3pm',
+        })
+        break
+      default:
+        // No specific format validation
+        break
+    }
+    return stringSchema
+  }
+  if (schema.type === 'number' || schema.type === 'integer') {
+    const typeLabel = schema.type === 'integer' ? 'an integer' : 'a number'
+    const isInteger = schema.type === 'integer'
+    const formatNum = (n: number) =>
+      Number.isInteger(n) && !isInteger ? `${n}.0` : String(n)
+
+    // Build a single descriptive error message for range violations
+    const rangeMsg =
+      schema.minimum !== undefined && schema.maximum !== undefined
+        ? `Must be ${typeLabel} between ${formatNum(schema.minimum)} and ${formatNum(schema.maximum)}`
+        : schema.minimum !== undefined
+          ? `Must be ${typeLabel} >= ${formatNum(schema.minimum)}`
+          : schema.maximum !== undefined
+            ? `Must be ${typeLabel} <= ${formatNum(schema.maximum)}`
+            : `Must be ${typeLabel}`
+
+    let numberSchema = z.coerce.number({
+      error: rangeMsg,
+    })
+    if (schema.type === 'integer') {
+      numberSchema = numberSchema.int({ message: rangeMsg })
+    }
+    if (schema.minimum !== undefined) {
+      numberSchema = numberSchema.min(schema.minimum, {
+        message: rangeMsg,
+      })
+    }
+    if (schema.maximum !== undefined) {
+      numberSchema = numberSchema.max(schema.maximum, {
+        message: rangeMsg,
+      })
+    }
+    return numberSchema
+  }
+  if (schema.type === 'boolean') {
+    return z.coerce.boolean()
+  }
+
+  throw new Error(`Unsupported schema: ${jsonStringify(schema)}`)
+}
+
+export function validateElicitationInput(
+  stringValue: string,
+  schema: PrimitiveSchemaDefinition,
+): ValidationResult {
+  const zodSchema = getZodSchema(schema)
+  const parseResult = zodSchema.safeParse(stringValue)
+
+  if (parseResult.success) {
+    // zodSchema always produces primitive types for elicitation
+    return {
+      value: parseResult.data as string | number | boolean,
+      isValid: true,
+    }
+  }
+  return {
+    isValid: false,
+    error: parseResult.error.issues.map(e => e.message).join('; '),
+  }
+}
+
+const hasStringFormat = (
+  schema: PrimitiveSchemaDefinition,
+): schema is StringSchema & { format: string } => {
+  return (
+    schema.type === 'string' &&
+    'format' in schema &&
+    typeof schema.format === 'string'
+  )
+}
+
+/**
+ * Returns a helpful placeholder/hint for a given format
+ */
+export function getFormatHint(
+  schema: PrimitiveSchemaDefinition,
+): string | undefined {
+  if (schema.type === 'string') {
+    if (!hasStringFormat(schema)) {
+      return undefined
+    }
+
+    const { description, example } = STRING_FORMATS[schema.format] || {}
+    return `${description}, e.g. ${example}`
+  }
+
+  if (schema.type === 'number' || schema.type === 'integer') {
+    const isInteger = schema.type === 'integer'
+    const formatNum = (n: number) =>
+      Number.isInteger(n) && !isInteger ? `${n}.0` : String(n)
+
+    if (schema.minimum !== undefined && schema.maximum !== undefined) {
+      return `(${schema.type} between ${formatNum(schema.minimum!)} and ${formatNum(schema.maximum!)})`
+    } else if (schema.minimum !== undefined) {
+      return `(${schema.type} >= ${formatNum(schema.minimum!)})`
+    } else if (schema.maximum !== undefined) {
+      return `(${schema.type} <= ${formatNum(schema.maximum!)})`
+    } else {
+      const example = schema.type === 'integer' ? '42' : '3.14'
+      return `(${schema.type}, e.g. ${example})`
+    }
+  }
+
+  return undefined
+}
+
+/**
+ * Check if a schema is a date or date-time format that supports NL parsing
+ */
+export function isDateTimeSchema(
+  schema: PrimitiveSchemaDefinition,
+): schema is StringSchema & { format: 'date' | 'date-time' } {
+  return (
+    schema.type === 'string' &&
+    'format' in schema &&
+    (schema.format === 'date' || schema.format === 'date-time')
+  )
+}
+
+/**
+ * Async validation that attempts NL date/time parsing via Haiku
+ * when the input doesn't look like ISO 8601.
+ */
+export async function validateElicitationInputAsync(
+  stringValue: string,
+  schema: PrimitiveSchemaDefinition,
+  signal: AbortSignal,
+): Promise<ValidationResult> {
+  const syncResult = validateElicitationInput(stringValue, schema)
+  if (syncResult.isValid) {
+    return syncResult
+  }
+
+  if (isDateTimeSchema(schema) && !looksLikeISO8601(stringValue)) {
+    const parseResult = await parseNaturalLanguageDateTime(
+      stringValue,
+      schema.format,
+      signal,
+    )
+
+    if (parseResult.success) {
+      const validatedParsed = validateElicitationInput(
+        parseResult.value,
+        schema,
+      )
+      if (validatedParsed.isValid) {
+        return validatedParsed
+      }
+    }
+  }
+
+  return syncResult
+}