{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/schemas/github/commit.json",
  "title": "GitHub Commit",
  "description": "A Git commit in a GitHub repository, including metadata about the author, committer, tree, parents, and verification status.",
  "type": "object",
  "required": ["sha", "commit"],
  "properties": {
    "sha": {
      "type": "string",
      "pattern": "^[0-9a-f]{40}$",
      "description": "The SHA-1 hash of the commit."
    },
    "node_id": {
      "type": "string",
      "description": "The GraphQL node ID for the commit."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The API URL for the commit."
    },
    "html_url": {
      "type": "string",
      "format": "uri",
      "description": "The URL of the commit on GitHub."
    },
    "comments_url": {
      "type": "string",
      "format": "uri",
      "description": "The API URL for the commit's comments."
    },
    "commit": {
      "$ref": "#/$defs/GitCommit"
    },
    "author": {
      "oneOf": [
        { "$ref": "#/$defs/SimpleUser" },
        { "type": "null" }
      ],
      "description": "The GitHub user who authored the commit."
    },
    "committer": {
      "oneOf": [
        { "$ref": "#/$defs/SimpleUser" },
        { "type": "null" }
      ],
      "description": "The GitHub user who committed the changes."
    },
    "parents": {
      "type": "array",
      "description": "The parent commits of this commit.",
      "items": {
        "$ref": "#/$defs/ParentCommit"
      }
    },
    "stats": {
      "type": "object",
      "description": "Statistics about the commit changes.",
      "properties": {
        "additions": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of lines added."
        },
        "deletions": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of lines deleted."
        },
        "total": {
          "type": "integer",
          "minimum": 0,
          "description": "The total number of lines changed."
        }
      }
    },
    "files": {
      "type": "array",
      "description": "The files changed in the commit.",
      "items": {
        "$ref": "#/$defs/CommitFile"
      }
    }
  },
  "$defs": {
    "GitCommit": {
      "type": "object",
      "description": "The underlying Git commit object data.",
      "required": ["message", "tree", "author", "committer"],
      "properties": {
        "message": {
          "type": "string",
          "description": "The commit message."
        },
        "tree": {
          "type": "object",
          "description": "The tree object the commit points to.",
          "properties": {
            "sha": {
              "type": "string",
              "pattern": "^[0-9a-f]{40}$",
              "description": "The SHA of the tree."
            },
            "url": {
              "type": "string",
              "format": "uri",
              "description": "The API URL for the tree."
            }
          }
        },
        "author": {
          "$ref": "#/$defs/GitUser"
        },
        "committer": {
          "$ref": "#/$defs/GitUser"
        },
        "verification": {
          "$ref": "#/$defs/Verification"
        },
        "comment_count": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of comments on the commit."
        }
      }
    },
    "GitUser": {
      "type": "object",
      "description": "A Git user (author or committer) with name, email, and timestamp.",
      "properties": {
        "name": {
          "type": "string",
          "description": "The name of the Git user."
        },
        "email": {
          "type": "string",
          "format": "email",
          "description": "The email address of the Git user."
        },
        "date": {
          "type": "string",
          "format": "date-time",
          "description": "The timestamp of the action."
        }
      }
    },
    "SimpleUser": {
      "type": "object",
      "description": "A simplified representation of a GitHub user.",
      "required": ["login", "id"],
      "properties": {
        "login": {
          "type": "string",
          "description": "The username of the user."
        },
        "id": {
          "type": "integer",
          "description": "The unique identifier for the user."
        },
        "node_id": {
          "type": "string",
          "description": "The GraphQL node ID."
        },
        "avatar_url": {
          "type": "string",
          "format": "uri",
          "description": "URL to the user's avatar image."
        },
        "html_url": {
          "type": "string",
          "format": "uri",
          "description": "URL to the user's GitHub profile."
        },
        "type": {
          "type": "string",
          "enum": ["User", "Organization", "Bot"],
          "description": "The type of account."
        }
      }
    },
    "ParentCommit": {
      "type": "object",
      "description": "A reference to a parent commit.",
      "required": ["sha", "url"],
      "properties": {
        "sha": {
          "type": "string",
          "pattern": "^[0-9a-f]{40}$",
          "description": "The SHA of the parent commit."
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "The API URL for the parent commit."
        },
        "html_url": {
          "type": "string",
          "format": "uri",
          "description": "The URL of the parent commit on GitHub."
        }
      }
    },
    "CommitFile": {
      "type": "object",
      "description": "A file changed in a commit.",
      "properties": {
        "sha": {
          "type": "string",
          "description": "The SHA of the file blob."
        },
        "filename": {
          "type": "string",
          "description": "The path and name of the file."
        },
        "status": {
          "type": "string",
          "enum": ["added", "removed", "modified", "renamed", "copied", "changed", "unchanged"],
          "description": "The status of the file change."
        },
        "additions": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of lines added."
        },
        "deletions": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of lines deleted."
        },
        "changes": {
          "type": "integer",
          "minimum": 0,
          "description": "The total number of changes."
        },
        "patch": {
          "type": "string",
          "description": "The unified diff patch for the file."
        },
        "previous_filename": {
          "type": "string",
          "description": "The previous filename if the file was renamed."
        }
      }
    },
    "Verification": {
      "type": "object",
      "description": "Commit signature verification status.",
      "properties": {
        "verified": {
          "type": "boolean",
          "description": "Whether the signature was verified."
        },
        "reason": {
          "type": "string",
          "enum": ["expired_key", "not_signing_key", "gpgverify_error", "gpgverify_unavailable", "unsigned", "unknown_signature_type", "no_user", "unverified_email", "bad_email", "unknown_key", "malformed_signature", "invalid", "valid", "bad_cert", "ocsp_pending"],
          "description": "The reason for the verification result."
        },
        "signature": {
          "type": ["string", "null"],
          "description": "The signature that was extracted from the commit."
        },
        "payload": {
          "type": ["string", "null"],
          "description": "The payload that was signed."
        }
      }
    }
  }
}