{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cityresourcegraph.com/schemas/facilitator.json",
  "title": "Facilitator Entity",
  "description": "External engineers and consultants available as paid intermediaries for industrial symbiosis implementation",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "description": "Unique facilitator identifier"
    },
    "user_id": {
      "type": "string",
      "format": "uuid",
      "description": "Associated user account ID"
    },
    "type": {
      "type": "string",
      "enum": ["engineer", "consultant", "legal", "financial", "technical"],
      "description": "Type of facilitator"
    },
    "company_name": {
      "type": "string",
      "maxLength": 255,
      "description": "Company or individual business name"
    },
    "contact_person": {
      "type": "string",
      "maxLength": 255,
      "description": "Primary contact name"
    },
    "email": {
      "type": "string",
      "format": "email",
      "description": "Contact email"
    },
    "phone": {
      "type": "string",
      "pattern": "^\\+?[1-9]\\d{1,14}$",
      "description": "Contact phone (E.164 format)"
    },
    "specialties": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": ["heat_exchange", "pipe_installation", "electrical", "plumbing", "permits", "contracts", "feasibility_studies", "project_management", "environmental_assessment", "energy_auditing", "waste_management", "process_optimization"]
      },
      "uniqueItems": true,
      "description": "Areas of technical expertise"
    },
    "service_area_km": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000,
      "description": "Maximum distance willing to travel for on-site work"
    },
    "hourly_rate": {
      "type": "number",
      "minimum": 0,
      "description": "Hourly rate in €"
    },
    "daily_rate": {
      "type": "number",
      "minimum": 0,
      "description": "Daily rate in € (for full-day engagements)"
    },
    "certifications": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 100
      },
      "description": "Professional certifications and qualifications"
    },
    "experience_years": {
      "type": "integer",
      "minimum": 0,
      "maximum": 50,
      "description": "Years of relevant experience"
    },
    "completed_matches": {
      "type": "integer",
      "minimum": 0,
      "default": 0,
      "description": "Number of successfully completed facilitation projects"
    },
    "rating": {
      "type": "number",
      "minimum": 0,
      "maximum": 5,
      "description": "Average rating from clients (0-5 scale)"
    },
    "rating_count": {
      "type": "integer",
      "minimum": 0,
      "default": 0,
      "description": "Number of ratings received"
    },
    "portfolio_url": {
      "type": "string",
      "format": "uri",
      "description": "Link to portfolio or case studies"
    },
    "availability": {
      "type": "string",
      "enum": ["available", "busy", "unavailable"],
      "default": "available",
      "description": "Current availability status"
    },
    "languages": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": ["en", "de", "fr", "es", "it", "nl"]
      },
      "default": ["en"],
      "description": "Languages spoken"
    },
    "insurance_coverage": {
      "type": "boolean",
      "description": "Has professional liability insurance"
    },
    "nda_signed": {
      "type": "boolean",
      "default": false,
      "description": "Has signed platform NDA"
    },
    "verification_status": {
      "type": "string",
      "enum": ["pending", "verified", "rejected"],
      "default": "pending",
      "description": "Background verification status"
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "updated_at": {
      "type": "string",
      "format": "date-time"
    }
  },
  "required": ["id", "type", "email", "specialties", "service_area_km", "hourly_rate"],
  "additionalProperties": false
}