{
  "$id": "https://context-guard.local/schemas/source-identity-v1.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "allOf": [
    {
      "if": {"properties": {"disposition": {"const": "exact_file"}}},
      "then": {
        "not": {"required": ["symbol"]},
        "properties": {
          "reason": {"const": "raw_file_identity"},
          "selection": {"properties": {"kind": {"const": "raw_file"}}}
        },
        "required": ["selection", "source"]
      }
    },
    {
      "if": {"properties": {"disposition": {"const": "range_candidate"}}},
      "then": {
        "not": {"required": ["symbol"]},
        "properties": {
          "reason": {
            "enum": [
              "raw_range_without_symbol_authority",
              "symbol_evidence_incomplete",
              "symbol_evidence_mismatch",
              "symbol_source_unsupported"
            ]
          },
          "selection": {"properties": {"kind": {"const": "raw_range"}}}
        },
        "required": ["selection", "source"]
      }
    },
    {
      "if": {"properties": {"disposition": {"const": "exact_symbol"}}},
      "then": {
        "properties": {
          "reason": {"const": "caller_complete_deterministic_symbol_evidence"},
          "selection": {"properties": {"kind": {"const": "raw_range"}}}
        },
        "required": ["selection", "source", "symbol"]
      }
    },
    {
      "if": {"properties": {"disposition": {"const": "pass_through"}}},
      "then": {
        "not": {"anyOf": [{"required": ["selection"]}, {"required": ["symbol"]}]},
        "properties": {
          "reason": {
            "enum": [
              "bare_repository",
              "git_index_unavailable",
              "repository_state_unresolved",
              "repository_state_changed",
              "source_changed_during_read",
              "source_missing",
              "source_not_regular",
              "source_symlink",
              "sparse_path",
              "symbol_evidence_incomplete",
              "symbol_evidence_mismatch",
              "symbol_source_unsupported",
              "unmerged_path"
            ]
          }
        }
      }
    }
  ],
  "properties": {
    "artifact_kind": {"const": "source_identity"},
    "disposition": {
      "enum": ["exact_file", "range_candidate", "exact_symbol", "pass_through"],
      "type": "string"
    },
    "evidence_boundary": {"$ref": "#/$defs/evidence_boundary"},
    "path_b64u": {
      "maxLength": 5462,
      "minLength": 1,
      "pattern": "^[A-Za-z0-9_-]+$",
      "type": "string"
    },
    "reason": {
      "enum": [
        "bare_repository",
        "caller_complete_deterministic_symbol_evidence",
        "git_index_unavailable",
        "raw_file_identity",
        "raw_range_without_symbol_authority",
        "repository_state_unresolved",
        "repository_state_changed",
        "source_changed_during_read",
        "source_missing",
        "source_not_regular",
        "source_symlink",
        "sparse_path",
        "symbol_evidence_incomplete",
        "symbol_evidence_mismatch",
        "symbol_source_unsupported",
        "unmerged_path"
      ],
      "type": "string"
    },
    "repository": {"$ref": "#/$defs/repository_snapshot"},
    "schema_version": {"const": "contextguard-receipt-source-identity/v1"},
    "selection": {"$ref": "#/$defs/selection"},
    "source": {"$ref": "#/$defs/source"},
    "symbol": {"$ref": "#/$defs/symbol"}
  },
  "required": [
    "artifact_kind",
    "disposition",
    "evidence_boundary",
    "path_b64u",
    "reason",
    "repository",
    "schema_version"
  ],
  "title": "Context Guard Receipt source identity",
  "type": "object",
  "$defs": {
    "evidence_boundary": {
      "additionalProperties": false,
      "properties": {
        "evidence_class": {"const": "companion_local_receipt_only"},
        "host_request_owned": {"const": false},
        "provider_claim_authority": {"const": false},
        "provider_join_status": {"const": "missing"},
        "runtime_observer_present": {"const": false},
        "schema_version": {"const": "contextguard-receipt-evidence-boundary/v1"},
        "selected_branch": {"const": "S2-UNSUPPORTED"},
        "selected_transport": {"const": "NONE"},
        "stage1_evidence": {"const": false},
        "stage2_evidence": {"const": false}
      },
      "required": [
        "evidence_class",
        "host_request_owned",
        "provider_claim_authority",
        "provider_join_status",
        "runtime_observer_present",
        "schema_version",
        "selected_branch",
        "selected_transport",
        "stage1_evidence",
        "stage2_evidence"
      ],
      "type": "object"
    },
    "repository_snapshot": {
      "additionalProperties": false,
      "properties": {
        "artifact_kind": {"const": "repository_snapshot"},
        "disposition": {"enum": ["captured", "pass_through"], "type": "string"},
        "evidence_boundary": {"$ref": "#/$defs/evidence_boundary"},
        "instance": {"$ref": "#/$defs/repository_instance"},
        "logical_state": {"$ref": "#/$defs/logical_state"},
        "reason": {
          "enum": [
            "git_bare_state",
            "git_command_failed",
            "git_output_limit",
            "git_state_malformed",
            "git_state_changed",
            "git_timeout",
            "git_unavailable",
            "git_unborn_worktree_state",
            "git_worktree_state",
            "non_git_directory"
          ],
          "type": "string"
        },
        "schema_version": {"const": "contextguard-receipt-repository-snapshot/v1"}
      },
      "required": [
        "artifact_kind",
        "disposition",
        "evidence_boundary",
        "instance",
        "logical_state",
        "reason",
        "schema_version"
      ],
      "type": "object"
    },
    "repository_instance": {
      "additionalProperties": false,
      "properties": {
        "identity_sha256": {"$ref": "#/$defs/sha256"},
        "kind": {
          "enum": ["bare_repository", "directory", "linked_worktree", "worktree"],
          "type": "string"
        }
      },
      "required": ["identity_sha256", "kind"],
      "type": "object"
    },
    "logical_state": {
      "additionalProperties": false,
      "allOf": [
        {
          "if": {"properties": {"kind": {"const": "non_git"}}},
          "then": {
            "not": {
              "anyOf": [
                {"required": ["head_oid_b64u"]},
                {"required": ["head_ref_b64u"]},
                {"required": ["head_state"]},
                {"required": ["index_format"]},
                {"required": ["index_nul_records"]},
                {"required": ["index_sha256"]},
                {"required": ["reason"]},
                {"required": ["status_format"]},
                {"required": ["status_nul_fields"]},
                {"required": ["status_sha256"]},
                {"required": ["worktree_diff_sha256"]}
              ]
            }
          }
        },
        {
          "if": {"properties": {"kind": {"const": "unresolved"}}},
          "then": {
            "not": {
              "anyOf": [
                {"required": ["head_oid_b64u"]},
                {"required": ["head_ref_b64u"]},
                {"required": ["head_state"]},
                {"required": ["index_format"]},
                {"required": ["index_nul_records"]},
                {"required": ["index_sha256"]},
                {"required": ["status_format"]},
                {"required": ["status_nul_fields"]},
                {"required": ["status_sha256"]},
                {"required": ["worktree_diff_sha256"]}
              ]
            },
            "required": ["reason"]
          }
        },
        {
          "if": {"properties": {"kind": {"const": "git_bare"}}},
          "then": {
            "not": {
              "anyOf": [
                {"required": ["reason"]},
                {"required": ["index_format"]},
                {"required": ["index_nul_records"]},
                {"required": ["index_sha256"]},
                {"required": ["status_format"]},
                {"required": ["status_nul_fields"]},
                {"required": ["status_sha256"]},
                {"required": ["worktree_diff_sha256"]}
              ]
            },
            "required": ["head_state"]
          }
        },
        {
          "if": {"properties": {"kind": {"const": "git_worktree"}}},
          "then": {
            "not": {"required": ["reason"]},
            "required": [
              "head_state",
              "index_format",
              "index_nul_records",
              "index_sha256",
              "status_format",
              "status_nul_fields",
              "status_sha256",
              "worktree_diff_sha256"
            ]
          }
        },
        {
          "if": {
            "properties": {"head_state": {"const": "attached"}},
            "required": ["head_state"]
          },
          "then": {"required": ["head_oid_b64u", "head_ref_b64u"]}
        },
        {
          "if": {
            "properties": {"head_state": {"const": "detached"}},
            "required": ["head_state"]
          },
          "then": {
            "not": {"required": ["head_ref_b64u"]},
            "required": ["head_oid_b64u"]
          }
        },
        {
          "if": {
            "properties": {"head_state": {"const": "unborn"}},
            "required": ["head_state"]
          },
          "then": {
            "not": {"required": ["head_oid_b64u"]},
            "required": ["head_ref_b64u"]
          }
        }
      ],
      "properties": {
        "head_oid_b64u": {
          "maxLength": 86,
          "minLength": 54,
          "pattern": "^[A-Za-z0-9_-]+$",
          "type": "string"
        },
        "head_ref_b64u": {
          "maxLength": 5462,
          "minLength": 1,
          "pattern": "^[A-Za-z0-9_-]+$",
          "type": "string"
        },
        "head_state": {
          "enum": ["attached", "detached", "unborn"],
          "type": "string"
        },
        "kind": {
          "enum": ["git_bare", "git_worktree", "non_git", "unresolved"],
          "type": "string"
        },
        "index_format": {"const": "git-ls-files-stage-z"},
        "index_nul_records": {"maximum": 4096, "minimum": 0, "type": "integer"},
        "index_sha256": {"$ref": "#/$defs/sha256"},
        "reason": {
          "enum": [
            "git_command_failed",
            "git_output_limit",
            "git_state_malformed",
            "git_state_changed",
            "git_timeout",
            "git_unavailable"
          ],
          "type": "string"
        },
        "state_sha256": {"$ref": "#/$defs/sha256"},
        "status_format": {"const": "git-status-porcelain-v1-z"},
        "status_nul_fields": {"maximum": 4096, "minimum": 0, "type": "integer"},
        "status_sha256": {"$ref": "#/$defs/sha256"},
        "worktree_diff_sha256": {"$ref": "#/$defs/sha256"}
      },
      "required": ["kind", "state_sha256"],
      "type": "object"
    },
    "selection": {
      "additionalProperties": false,
      "properties": {
        "byte_length": {"maximum": 1048576, "minimum": 0, "type": "integer"},
        "content_sha256": {"$ref": "#/$defs/sha256"},
        "end_byte": {"maximum": 1048576, "minimum": 0, "type": "integer"},
        "identity_sha256": {"$ref": "#/$defs/sha256"},
        "kind": {"enum": ["raw_file", "raw_range"], "type": "string"},
        "start_byte": {"maximum": 1048576, "minimum": 0, "type": "integer"}
      },
      "required": [
        "byte_length",
        "content_sha256",
        "end_byte",
        "identity_sha256",
        "kind",
        "start_byte"
      ],
      "type": "object"
    },
    "source": {
      "additionalProperties": false,
      "properties": {
        "byte_length": {"maximum": 1048576, "minimum": 0, "type": "integer"},
        "content_sha256": {"$ref": "#/$defs/sha256"},
        "file_type": {"const": "regular"},
        "git_index": {"$ref": "#/$defs/git_index"},
        "identity_sha256": {"$ref": "#/$defs/sha256"},
        "mode": {"pattern": "^[0-7]{4}$", "type": "string"}
      },
      "required": [
        "byte_length",
        "content_sha256",
        "file_type",
        "git_index",
        "identity_sha256",
        "mode"
      ],
      "type": "object"
    },
    "git_index": {
      "additionalProperties": false,
      "allOf": [
        {
          "if": {"properties": {"status": {"const": "tracked"}}},
          "then": {
            "required": ["index_mode", "object_id_b64u", "record_sha256", "stage"]
          }
        },
        {
          "if": {
            "properties": {"status": {"enum": ["not_applicable", "untracked"]}}
          },
          "then": {
            "not": {
              "anyOf": [
                {"required": ["index_mode"]},
                {"required": ["object_id_b64u"]},
                {"required": ["record_sha256"]},
                {"required": ["stage"]}
              ]
            }
          }
        }
      ],
      "properties": {
        "index_mode": {"enum": ["100644", "100755"], "type": "string"},
        "object_id_b64u": {
          "maxLength": 86,
          "minLength": 54,
          "pattern": "^[A-Za-z0-9_-]+$",
          "type": "string"
        },
        "record_sha256": {"$ref": "#/$defs/sha256"},
        "stage": {"const": 0},
        "status": {
          "enum": ["not_applicable", "tracked", "untracked"],
          "type": "string"
        }
      },
      "required": ["status"],
      "type": "object"
    },
    "symbol": {
      "additionalProperties": false,
      "properties": {
        "authority": {"const": "caller_supplied"},
        "evidence_sha256": {"$ref": "#/$defs/sha256"},
        "identity_sha256": {"$ref": "#/$defs/sha256"}
      },
      "required": ["authority", "evidence_sha256", "identity_sha256"],
      "type": "object"
    },
    "sha256": {
      "maxLength": 64,
      "minLength": 64,
      "pattern": "^[0-9a-f]{64}$",
      "type": "string"
    }
  }
}