/**
 * Artifact Tools - Artifact creation and reading
 *
 * Implements T-210: artifact.create, artifact.read
 *
 * @module packages/runtime/src/tools/artifact
 */

import type { ToolDefinition, ToolCall, ToolResultEnvelope, ISOTimeString } from '@aircoding/contracts'

export const artifact_create: ToolDefinition = {
  name: 'artifact.create',
  category: 'artifact',
  description: 'Create an artifact (wraps ArtifactStore)',
  input_schema: {
    type: 'object',
    properties: {
      name: { type: 'string', description: 'Artifact name' },
      type: { type: 'string', enum: ['code', 'text', 'image', 'data', 'document'], description: 'Artifact type' },
      content: { type: 'string', description: 'Artifact content' },
      metadata: { type: 'object', description: 'Additional metadata' }
    },
    required: ['name', 'type', 'content']
  },
  permissions: { read: false, write: true, network: false },
  streaming: false
}

export const artifact_read: ToolDefinition = {
  name: 'artifact.read',
  category: 'artifact',
  description: 'Read an artifact by ID or name',
  input_schema: {
    type: 'object',
    properties: {
      id: { type: 'string', description: 'Artifact ID (art_xxx)' },
      name: { type: 'string', description: 'Artifact name' }
    }
  },
  permissions: { read: true, write: false, network: false },
  streaming: false
}

// Stub executor - actual implementation would wrap ArtifactStore
export function createArtifactExecutor() {
  return {
    'artifact.create': async (call: ToolCall): Promise<ToolResultEnvelope> => {
      const { name, type, content, metadata } = call.arguments as {
        name: string
        type: string
        content: string
        metadata?: Record<string, unknown>
      }
      // Stub: would call ArtifactStore.create()
      return create_result(call.id, 'artifact.create', 'text', {
        id: `art_${Date.now()}`,
        name,
        type,
        size: content.length,
        message: 'Artifact created (stub)'
      })
    },

    'artifact.read': async (call: ToolCall): Promise<ToolResultEnvelope> => {
      const { id, name } = call.arguments as { id?: string; name?: string }
      // Stub: would call ArtifactStore.get()
      if (!id && !name) {
        return create_result(call.id, 'artifact.read', 'error', { message: 'Either id or name required' })
      }
      return create_result(call.id, 'artifact.read', 'text', {
        id: id || `art_${name}`,
        content: '// Artifact content (stub)',
        message: 'Artifact read (stub)'
      })
    }
  }
}

function create_result(call_id: string, tool_name: string, type: 'text' | 'error', content: Record<string, unknown>): ToolResultEnvelope {
  return { call_id, tool_name, type, content, metadata: { timestamp: new Date().toISOString() as ISOTimeString } }
}