{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/pgaqueduct/pg-aqueduct/docs/cli-events-schema.json",
  "title": "Aqueduct CLI Events Schema",
  "description": "JSON output schema for all structured events emitted by the aqueduct CLI (M-12 / v0.13).",
  "version": "1",
  "type": "object",
  "required": ["schema_version"],
  "properties": {
    "schema_version": {
      "type": "integer",
      "const": 1,
      "description": "Schema version for this event. Always 1 in v0.13."
    }
  },
  "oneOf": [
    {
      "title": "apply_complete",
      "description": "Emitted to stderr after a successful `aqueduct apply`.",
      "required": ["schema_version", "event", "migration_id", "dag_version", "from_version", "to_version", "project"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "event": { "type": "string", "const": "apply_complete" },
        "migration_id": { "type": ["integer", "null"] },
        "dag_version": { "type": "integer" },
        "from_version": { "type": ["integer", "null"] },
        "to_version": { "type": "integer" },
        "project": { "type": "string" }
      }
    },
    {
      "title": "plan",
      "description": "Output of `aqueduct plan --format json`.",
      "required": ["schema_version", "project", "from_version", "to_version", "is_empty"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "project": { "type": "string" },
        "from_version": { "type": ["integer", "null"] },
        "to_version": { "type": "integer" },
        "is_empty": { "type": "boolean" },
        "creates": { "type": "integer" },
        "drops": { "type": "integer" },
        "alters": { "type": "integer" }
      }
    },
    {
      "title": "diff",
      "description": "Output of `aqueduct diff --format json`.",
      "required": ["schema_version", "deltas", "changed", "total"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "deltas": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["name", "kind"],
            "properties": {
              "name": { "type": "string" },
              "kind": { "type": "string" }
            }
          }
        },
        "changed": { "type": "integer" },
        "total": { "type": "integer" }
      }
    },
    {
      "title": "lint",
      "description": "Output of `aqueduct lint --format json`.",
      "required": ["schema_version", "files", "diagnostics", "ok"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "files": { "type": "integer" },
        "diagnostics": { "type": "array" },
        "warnings": { "type": "integer" },
        "errors": { "type": "integer" },
        "ok": { "type": "boolean" }
      }
    },
    {
      "title": "validate",
      "description": "Output of `aqueduct validate --format json`.",
      "required": ["schema_version", "files", "ok"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "files": { "type": "integer" },
        "errors": { "type": "array" },
        "warnings": { "type": "array" },
        "ok": { "type": "boolean" }
      }
    },
    {
      "title": "fmt",
      "description": "Output of `aqueduct fmt --format json`.",
      "required": ["schema_version", "changed", "unchanged", "check_only"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "changed": { "type": "array", "items": { "type": "string" } },
        "unchanged": { "type": "array", "items": { "type": "string" } },
        "errors": { "type": "array" },
        "check_only": { "type": "boolean" }
      }
    },
    {
      "title": "status",
      "description": "Output of `aqueduct status --format json`.",
      "required": ["schema_version", "project", "version"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "project": { "type": "string" },
        "version": { "type": ["integer", "null"] },
        "stream_tables": { "type": "integer" },
        "drift": { "type": "integer" },
        "pgtrickle_version": { "type": ["string", "null"] },
        "polled_at": { "type": "string", "format": "date-time" }
      }
    },
    {
      "title": "step_start",
      "description": "Emitted to stderr when a migration step begins execution (v0.17 / B).",
      "required": ["schema_version", "event", "step_index", "step_type", "migration_id", "project"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "event": { "type": "string", "const": "step_start" },
        "step_index": { "type": "integer" },
        "step_type": { "type": "string" },
        "migration_id": { "type": ["integer", "null"] },
        "project": { "type": "string" }
      }
    },
    {
      "title": "step_complete",
      "description": "Emitted to stderr when a migration step completes successfully (v0.17 / B).",
      "required": ["schema_version", "event", "step_index", "step_type", "migration_id", "project", "duration_ms"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "event": { "type": "string", "const": "step_complete" },
        "step_index": { "type": "integer" },
        "step_type": { "type": "string" },
        "migration_id": { "type": ["integer", "null"] },
        "project": { "type": "string" },
        "duration_ms": { "type": "integer" }
      }
    },
    {
      "title": "step_failed",
      "description": "Emitted to stderr when a migration step fails (v0.17 / B).",
      "required": ["schema_version", "event", "step_index", "step_type", "migration_id", "project", "duration_ms", "error"],
      "properties": {
        "schema_version": { "type": "integer", "const": 1 },
        "event": { "type": "string", "const": "step_failed" },
        "step_index": { "type": "integer" },
        "step_type": { "type": "string" },
        "migration_id": { "type": ["integer", "null"] },
        "project": { "type": "string" },
        "duration_ms": { "type": "integer" },
        "error": { "type": "string" }
      }
    }
  ]
}