{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "mdbase durable runtime workflow",
  "type": "object",
  "required": [
    "type",
    "id",
    "version",
    "name",
    "enabled",
    "triggers",
    "steps"
  ],
  "properties": {
    "type": {
      "const": "runtime_workflow"
    },
    "id": {
      "type": "string",
      "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
    },
    "version": {
      "type": "string",
      "pattern": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(?:0|[1-9][0-9]*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
    },
    "name": {
      "type": "string",
      "minLength": 1
    },
    "description": {
      "type": "string"
    },
    "enabled": {
      "type": "boolean"
    },
    "requires": {
      "$ref": "#/$defs/requires"
    },
    "vars": {
      "type": "object",
      "additionalProperties": {}
    },
    "triggers": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/trigger"
      }
    },
    "steps": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/step"
      }
    },
    "run": {
      "$ref": "#/$defs/runPolicy"
    }
  },
  "patternProperties": {
    "^x-[A-Za-z0-9._:-]+$": true
  },
  "additionalProperties": false,
  "$defs": {
    "identifier": {
      "type": "string",
      "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
    },
    "semanticVersion": {
      "type": "string",
      "pattern": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(?:0|[1-9][0-9]*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
    },
    "digest": {
      "type": "string",
      "pattern": "^sha256:[0-9a-f]{64}$"
    },
    "dateTime": {
      "type": "string",
      "format": "date-time"
    },
    "contractRequirement": {
      "type": "object",
      "required": [
        "id",
        "version"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "version": {
          "type": "string",
          "minLength": 1
        },
        "digest": {
          "type": "string",
          "pattern": "^sha256:[0-9a-f]{64}$"
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "exactContractReference": {
      "type": "object",
      "required": [
        "id",
        "version",
        "digest"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "version": {
          "type": "string",
          "pattern": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(?:0|[1-9][0-9]*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
        },
        "digest": {
          "type": "string",
          "pattern": "^sha256:[0-9a-f]{64}$"
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "identity": {
      "type": "object",
      "required": [
        "application",
        "implementation",
        "version"
      ],
      "properties": {
        "application": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "implementation": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "version": {
          "type": "string",
          "pattern": "^(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(?:0|[1-9][0-9]*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
        },
        "instance_id": {
          "type": "string",
          "minLength": 1
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "providerSelector": {
      "type": "object",
      "required": [],
      "properties": {
        "application": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "implementation": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "instance_id": {
          "type": "string",
          "minLength": 1
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false,
      "minProperties": 1
    },
    "expression": {
      "type": "object",
      "required": [
        "$expr"
      ],
      "properties": {
        "$expr": {
          "type": "string",
          "minLength": 1
        }
      },
      "additionalProperties": false
    },
    "requires": {
      "type": "object",
      "required": [],
      "properties": {
        "capabilities": {
          "type": "array",
          "uniqueItems": true,
          "items": {
            "type": "string",
            "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
          }
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "trigger": {
      "type": "object",
      "required": [
        "id",
        "event"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "event": {
          "$ref": "#/$defs/contractRequirement"
        },
        "if": {
          "type": "object",
          "required": [
            "$expr"
          ],
          "properties": {
            "$expr": {
              "type": "string",
              "minLength": 1
            }
          },
          "additionalProperties": false
        },
        "debounce": {
          "$ref": "#/$defs/duration"
        },
        "minimum_interval": {
          "$ref": "#/$defs/duration"
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "step": {
      "type": "object",
      "required": [
        "id",
        "action"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[A-Za-z][A-Za-z0-9._:-]*$"
        },
        "name": {
          "type": "string"
        },
        "action": {
          "$ref": "#/$defs/contractRequirement"
        },
        "provider": {
          "$ref": "#/$defs/providerSelector"
        },
        "requires": {
          "$ref": "#/$defs/requires"
        },
        "if": {
          "type": "object",
          "required": [
            "$expr"
          ],
          "properties": {
            "$expr": {
              "type": "string",
              "minLength": 1
            }
          },
          "additionalProperties": false
        },
        "input": {
          "type": "object",
          "additionalProperties": {}
        },
        "for_each": {
          "type": "object",
          "required": [
            "items"
          ],
          "properties": {
            "items": {},
            "as": {
              "type": "string",
              "pattern": "^[A-Za-z_][A-Za-z0-9_]*$"
            }
          },
          "patternProperties": {
            "^x-[A-Za-z0-9._:-]+$": true
          },
          "additionalProperties": false
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    },
    "duration": {
      "type": "string",
      "pattern": "^(0|[1-9][0-9]*)(ms|s|m|h|d)$"
    },
    "runPolicy": {
      "type": "object",
      "required": [],
      "properties": {
        "idempotency": {
          "type": "object",
          "required": [
            "key"
          ],
          "properties": {
            "key": {}
          },
          "patternProperties": {
            "^x-[A-Za-z0-9._:-]+$": true
          },
          "additionalProperties": false
        },
        "concurrency": {
          "type": "object",
          "required": [
            "policy"
          ],
          "properties": {
            "group": {},
            "policy": {
              "enum": [
                "skip",
                "queue",
                "replace",
                "allow"
              ]
            }
          },
          "patternProperties": {
            "^x-[A-Za-z0-9._:-]+$": true
          },
          "additionalProperties": false
        },
        "limits": {
          "type": "object",
          "required": [],
          "properties": {
            "timeout": {
              "$ref": "#/$defs/duration"
            },
            "max_items": {
              "type": "integer",
              "minimum": 1
            }
          },
          "patternProperties": {
            "^x-[A-Za-z0-9._:-]+$": true
          },
          "additionalProperties": false
        },
        "on_error": {
          "enum": [
            "stop",
            "continue"
          ]
        }
      },
      "patternProperties": {
        "^x-[A-Za-z0-9._:-]+$": true
      },
      "additionalProperties": false
    }
  },
  "$id": "https://mdbase.dev/schemas/runtime/v0.2/mdbase.runtime.workflow/1.0.0.schema.json"
}