{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/api-evangelist/six-sigma/blob/main/json-schema/six-sigma-project-schema.json",
  "title": "Six Sigma Project",
  "description": "Schema representing a Six Sigma improvement project following the DMAIC (Define-Measure-Analyze-Improve-Control) methodology",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique identifier for the Six Sigma project"
    },
    "name": {
      "type": "string",
      "description": "Name or title of the project"
    },
    "description": {
      "type": "string",
      "description": "Project description and scope statement"
    },
    "methodology": {
      "type": "string",
      "description": "The Six Sigma methodology framework used",
      "enum": ["DMAIC", "DMADV", "DFSS", "LEAN", "LEAN_SIX_SIGMA"]
    },
    "phase": {
      "type": "string",
      "description": "Current phase of the DMAIC project",
      "enum": ["Define", "Measure", "Analyze", "Improve", "Control", "Closed"]
    },
    "champion": {
      "type": "string",
      "description": "Executive sponsor / champion of the project"
    },
    "blackBelt": {
      "type": "string",
      "description": "Six Sigma Black Belt leading the project"
    },
    "greenBelt": {
      "type": "string",
      "description": "Six Sigma Green Belt supporting the project"
    },
    "processOwner": {
      "type": "string",
      "description": "Owner of the business process being improved"
    },
    "startDate": {
      "type": "string",
      "format": "date",
      "description": "Project start date"
    },
    "targetCompletionDate": {
      "type": "string",
      "format": "date",
      "description": "Target completion date"
    },
    "businessCase": {
      "type": "string",
      "description": "Business justification and expected financial benefit"
    },
    "problemStatement": {
      "type": "string",
      "description": "Clear statement of the problem being addressed"
    },
    "goalStatement": {
      "type": "string",
      "description": "Measurable goal and target improvement level"
    },
    "metrics": {
      "type": "object",
      "description": "Key project metrics",
      "properties": {
        "baselineSigmaLevel": {
          "type": "number",
          "description": "Baseline process sigma level before improvement"
        },
        "targetSigmaLevel": {
          "type": "number",
          "description": "Target sigma level after improvement"
        },
        "baselineDPMO": {
          "type": "number",
          "description": "Baseline defects per million opportunities"
        },
        "targetDPMO": {
          "type": "number",
          "description": "Target defects per million opportunities"
        },
        "baselineCapabilityIndex": {
          "type": "number",
          "description": "Baseline process capability (Cpk)"
        },
        "targetCapabilityIndex": {
          "type": "number",
          "description": "Target process capability (Cpk)"
        },
        "estimatedAnnualSavings": {
          "type": "number",
          "description": "Estimated annual cost savings in currency"
        }
      }
    },
    "deliverables": {
      "type": "array",
      "description": "Project deliverables and gate review artifacts",
      "items": {
        "type": "object",
        "properties": {
          "phase": { "type": "string" },
          "artifact": { "type": "string" },
          "completed": { "type": "boolean" },
          "completedDate": { "type": "string", "format": "date" }
        }
      }
    },
    "status": {
      "type": "string",
      "description": "Current project status",
      "enum": ["Active", "On Hold", "Completed", "Cancelled"]
    }
  },
  "required": ["id", "name", "methodology", "phase"],
  "additionalProperties": false
}