{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://datenoio.github.io/undatum/schemas/undatum.diff.v1.json",
  "title": "Records added, removed and changed between two files",
  "description": "Printed by `undatum diff --json`.",
  "type": "object",
  "properties": {
    "schema": {
      "const": "undatum.diff/1",
      "description": "Result layout"
    },
    "file1": {
      "type": "string",
      "description": "Old file"
    },
    "file2": {
      "type": "string",
      "description": "New file"
    },
    "key": {
      "type": [
        "array",
        "null"
      ],
      "description": "Key fields (null: records compared whole)"
    },
    "summary": {
      "type": "object",
      "description": "file1_count, file2_count, added_count, removed_count, changed_count"
    },
    "added": {
      "type": "array",
      "description": "Records only in file2 (not with --summary-only)"
    },
    "removed": {
      "type": "array",
      "description": "Records only in file1 (not with --summary-only)"
    },
    "changed": {
      "type": "array",
      "description": "Changed records with key, old and new (not with --summary-only)"
    }
  },
  "required": [
    "schema",
    "file1",
    "file2",
    "summary"
  ]
}