{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://lpkg.dev/schemas/package-metadata.json",
  "title": "LPKG Package Metadata",
  "type": "object",
  "required": ["schema_version", "package", "source", "build", "provenance", "status"],
  "additionalProperties": false,
  "properties": {
    "schema_version": {
      "type": "string",
      "pattern": "^v\\d+\\.\\d+\\.\\d+$"
    },
    "package": {
      "type": "object",
      "required": ["id", "name", "version", "book"],
      "additionalProperties": false,
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[a-z0-9][a-z0-9-/]*$"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "upstream": {
          "type": "string"
        },
        "version": {
          "type": "string",
          "minLength": 1
        },
        "book": {
          "type": "string",
          "enum": ["lfs", "mlfs", "blfs", "glfs"]
        },
        "chapter": {
          "type": ["integer", "null"],
          "minimum": 0
        },
        "section": {
          "type": ["string", "null"],
          "pattern": "^\\d+\\.\\d+$"
        },
        "stage": {
          "type": ["string", "null"],
          "enum": [
            "cross-toolchain",
            "temporary-tools",
            "system",
            "system-configuration",
            "system-finalization",
            "desktop",
            "server",
            "multilib",
            "kernel",
            "boot",
            null
          ]
        },
        "variant": {
          "type": ["string", "null"],
          "minLength": 1
        },
        "anchors": {
          "type": "object",
          "additionalProperties": {
            "type": "string",
            "format": "uri"
          }
        }
      }
    },
    "source": {
      "type": "object",
      "required": ["urls"],
      "additionalProperties": false,
      "properties": {
        "urls": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["url"],
            "additionalProperties": false,
            "properties": {
              "url": {
                "type": "string",
                "format": "uri"
              },
              "kind": {
                "type": "string",
                "enum": ["primary", "mirror", "patch", "signature"]
              }
            }
          }
        },
        "archive": {
          "type": ["string", "null"]
        },
        "checksums": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["alg", "value"],
            "additionalProperties": false,
            "properties": {
              "alg": {
                "type": "string",
                "enum": ["md5", "sha1", "sha256", "sha512"]
              },
              "value": {
                "type": "string",
                "pattern": "^[A-Fa-f0-9]{16,128}$"
              }
            }
          }
        }
      }
    },
    "artifacts": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "sbu": {
          "type": ["number", "null"],
          "minimum": 0
        },
        "disk": {
          "type": ["integer", "null"],
          "minimum": 0,
          "description": "Approximate disk usage in MB"
        },
        "install_prefix": {
          "type": ["string", "null"],
          "minLength": 1
        }
      }
    },
    "dependencies": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "build": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["name"],
            "additionalProperties": false,
            "properties": {
              "name": {
                "type": "string",
                "minLength": 1
              },
              "optional": {
                "type": "boolean",
                "default": false
              }
            }
          }
        },
        "runtime": {
          "type": "array",
          "items": {
            "type": "string",
            "minLength": 1
          }
        }
      }
    },
    "environment": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "variables": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["name"],
            "additionalProperties": false,
            "properties": {
              "name": {
                "type": "string",
                "pattern": "^[A-Z0-9_]+$"
              },
              "required": {
                "type": "boolean",
                "default": true
              },
              "description": {
                "type": "string"
              }
            }
          }
        },
        "users": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["name"],
            "additionalProperties": false,
            "properties": {
              "name": {
                "type": "string",
                "minLength": 1
              },
              "purpose": {
                "type": "string"
              }
            }
          }
        }
      }
    },
    "build": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["phase", "commands"],
        "additionalProperties": false,
        "properties": {
          "phase": {
            "type": "string",
            "enum": ["setup", "configure", "build", "test", "install", "post"]
          },
          "commands": {
            "type": "array",
            "items": {
              "type": "string",
              "minLength": 1
            }
          },
          "cwd": {
            "type": ["string", "null"],
            "minLength": 1
          },
          "requires_root": {
            "type": "boolean",
            "default": false
          },
          "notes": {
            "type": ["string", "null"],
            "minLength": 1
          }
        }
      }
    },
    "optimizations": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "enable_lto": {
          "type": "boolean"
        },
        "enable_pgo": {
          "type": "boolean"
        },
        "cflags": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "ldflags": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "profdata": {
          "type": ["string", "null"],
          "minLength": 1
        }
      }
    },
    "tests": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["commands"],
        "additionalProperties": false,
        "properties": {
          "commands": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "optional": {
            "type": "boolean"
          },
          "expected_failures": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    },
    "post_install": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["commands"],
        "additionalProperties": false,
        "properties": {
          "commands": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "description": {
            "type": ["string", "null"]
          }
        }
      }
    },
    "notes": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["text"],
        "additionalProperties": false,
        "properties": {
          "severity": {
            "type": "string",
            "enum": ["info", "warning", "error"]
          },
          "text": {
            "type": "string"
          }
        }
      }
    },
    "provenance": {
      "type": "object",
      "required": ["book_release", "page_url", "retrieved_at"],
      "additionalProperties": false,
      "properties": {
        "book_release": {
          "type": "string"
        },
        "page_url": {
          "type": "string",
          "format": "uri"
        },
        "retrieved_at": {
          "type": "string",
          "format": "date-time"
        },
        "content_hash": {
          "type": "string",
          "pattern": "^[A-Fa-f0-9]{64}$"
        }
      }
    },
    "status": {
      "type": "object",
      "required": ["state"],
      "additionalProperties": false,
      "properties": {
        "state": {
          "type": "string",
          "enum": ["draft", "review", "imported", "stale"]
        },
        "issues": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      }
    }
  }
}