{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://missionweaveprotocol.dev/schemas/0.1/work-item.schema.json",
  "title": "MissionWeaveProtocol 0.1 WorkItem",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "workItemId",
    "missionId",
    "groupId",
    "conversationId",
    "revision",
    "state",
    "exclusive",
    "contract",
    "createdBy",
    "createdAt"
  ],
  "properties": {
    "workItemId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "missionId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "groupId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "conversationId": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "revision": {
      "$ref": "common.schema.json#/$defs/safeInteger"
    },
    "state": {
      "enum": [
        "open",
        "offered",
        "queued",
        "active",
        "blocked",
        "submitted",
        "verified",
        "failed",
        "cancelled"
      ]
    },
    "exclusive": {
      "type": "boolean"
    },
    "contract": {
      "$ref": "work-contract.schema.json"
    },
    "offers": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["offerId", "agentId", "agentCardVersion", "expiresAt", "status"],
        "properties": {
          "offerId": {
            "$ref": "common.schema.json#/$defs/id"
          },
          "agentId": {
            "$ref": "common.schema.json#/$defs/id"
          },
          "agentCardVersion": {
            "$ref": "common.schema.json#/$defs/positiveInteger"
          },
          "expiresAt": {
            "$ref": "common.schema.json#/$defs/timestamp"
          },
          "status": {
            "enum": ["pending", "accepted", "declined", "withdrawn", "expired", "lost_race"]
          },
          "declineReason": {
            "enum": ["capacity", "deadline", "capability", "authorization", "dependency", "budget", "other"]
          }
        }
      }
    },
    "owner": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "agentId",
        "agentCardVersion",
        "capabilityPins",
        "ownershipEpoch",
        "ownershipLeaseId",
        "acceptedAt"
      ],
      "properties": {
        "agentId": {
          "$ref": "common.schema.json#/$defs/id"
        },
        "agentCardVersion": {
          "$ref": "common.schema.json#/$defs/positiveInteger"
        },
        "capabilityPins": {
          "type": "array",
          "items": {
            "$ref": "common.schema.json#/$defs/capabilityRef"
          },
          "minItems": 1
        },
        "ownershipEpoch": {
          "$ref": "common.schema.json#/$defs/positiveInteger"
        },
        "ownershipLeaseId": {
          "$ref": "common.schema.json#/$defs/id"
        },
        "acceptedAt": {
          "$ref": "common.schema.json#/$defs/timestamp"
        }
      }
    },
    "selectionBasis": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "requiredCapabilities",
        "verifiedMatches",
        "authorizationEligible",
        "availabilityEstimate",
        "expectedCost",
        "reliabilityEvidence",
        "policyRulesApplied"
      ],
      "properties": {
        "requiredCapabilities": {
          "type": "array",
          "items": {
            "$ref": "common.schema.json#/$defs/capabilityRef"
          },
          "minItems": 1
        },
        "verifiedMatches": {
          "type": "array",
          "items": {
            "$ref": "common.schema.json#/$defs/capabilityRef"
          },
          "minItems": 1
        },
        "authorizationEligible": {
          "type": "boolean"
        },
        "availabilityEstimate": {
          "$ref": "common.schema.json#/$defs/timestamp"
        },
        "expectedCost": {
          "type": "number",
          "minimum": 0
        },
        "reliabilityEvidence": {
          "type": "array",
          "items": {
            "$ref": "common.schema.json#/$defs/id"
          }
        },
        "policyRulesApplied": {
          "type": "array",
          "items": {
            "type": "string",
            "minLength": 1,
            "maxLength": 200
          },
          "minItems": 1
        }
      }
    },
    "scheduleEstimate": {
      "type": "object",
      "additionalProperties": false,
      "required": ["estimatedStart", "estimatedCompletion", "confidence", "capacityStatus", "lastCalculatedAt"],
      "properties": {
        "estimatedStart": {
          "$ref": "common.schema.json#/$defs/timestamp"
        },
        "estimatedCompletion": {
          "$ref": "common.schema.json#/$defs/timestamp"
        },
        "confidence": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "capacityStatus": {
          "enum": ["available", "queued", "constrained", "blocked"]
        },
        "lastCalculatedAt": {
          "$ref": "common.schema.json#/$defs/timestamp"
        }
      }
    },
    "progress": {
      "type": "object",
      "additionalProperties": false,
      "required": ["currentPhase", "completedMilestones", "nextCheckpoint", "blockers", "updatedCompletionEstimate", "evidenceIds"],
      "properties": {
        "currentPhase": {"type": "string", "minLength": 1, "maxLength": 500},
        "completedMilestones": {
          "type": "array",
          "items": {"type": "string", "minLength": 1, "maxLength": 500}
        },
        "nextCheckpoint": {"type": "string", "minLength": 1, "maxLength": 500},
        "blockers": {
          "type": "array",
          "items": {"type": "string", "minLength": 1, "maxLength": 2000}
        },
        "updatedCompletionEstimate": {
          "$ref": "common.schema.json#/$defs/timestamp"
        },
        "evidenceIds": {
          "type": "array",
          "items": {"$ref": "common.schema.json#/$defs/id"},
          "uniqueItems": true
        }
      }
    },
    "submission": {
      "type": "object",
      "additionalProperties": false,
      "required": ["artifactHashes", "evidenceIds", "submittedAt"],
      "properties": {
        "artifactHashes": {
          "type": "array",
          "items": {"$ref": "common.schema.json#/$defs/sha256"},
          "minItems": 1,
          "uniqueItems": true
        },
        "evidenceIds": {
          "type": "array",
          "items": {"$ref": "common.schema.json#/$defs/id"},
          "minItems": 1,
          "uniqueItems": true
        },
        "submittedAt": {
          "$ref": "common.schema.json#/$defs/timestamp"
        }
      }
    },
    "createdBy": {
      "$ref": "common.schema.json#/$defs/actor"
    },
    "authorizedBy": {
      "$ref": "common.schema.json#/$defs/actor"
    },
    "createdAt": {
      "$ref": "common.schema.json#/$defs/timestamp"
    },
    "updatedAt": {
      "$ref": "common.schema.json#/$defs/timestamp"
    },
    "extensions": {
      "$ref": "common.schema.json#/$defs/extensions"
    }
  },
  "allOf": [
    {
      "if": {
        "properties": {
          "state": {
            "enum": [
              "queued",
              "active",
              "blocked",
              "submitted",
              "verified"
            ]
          }
        },
        "required": ["state"]
      },
      "then": {
        "required": ["owner", "selectionBasis"]
      }
    },
    {
      "if": {
        "properties": {"state": {"enum": ["submitted", "verified"]}},
        "required": ["state"]
      },
      "then": {
        "required": ["submission"]
      }
    }
  ]
}