harn-stdlib 0.10.2

/**
 * `harn provider tool-scorecard` render layer — see harn#4192.
 *
 * The scorecard aggregator stays in Rust because it consumes typed
 * `ToolConformanceReport` fixtures and will later compare those observations
 * with provider catalog rows. This script only renders the JSON envelope.
 *
 * Inputs (from the dispatch shim):
 *   HARN_PROVIDER_TOOL_SCORECARD_PAYLOAD_JSON — JSON envelope matching the
 *     `ToolScorecardReport` shape.
 *   HARN_PROVIDER_TOOL_SCORECARD_PAYLOAD_PRETTY — pretty-printed companion,
 *     forwarded verbatim in JSON mode to preserve serde float fidelity.
 *   HARN_OUTPUT_JSON — "1" for the JSON envelope, else the human summary.
 */
fn __safe_string(value, fallback: string) -> string {
  if type_of(value) == "string" {
    return value
  }
  return fallback
}

fn __safe_dict(value) -> dict {
  if type_of(value) == "dict" {
    return value
  }
  return {}
}

fn __safe_list(value) -> list {
  if type_of(value) == "list" {
    return value
  }
  return []
}

fn __safe_int(value, fallback: int) -> int {
  if type_of(value) == "int" {
    return value
  }
  return fallback
}

fn __join_strings(values: list, fallback: string) -> string {
  let out = ""
  let first = true
  for value in values {
    if type_of(value) != "string" {
      continue
    }
    if !first {
      out = out + ","
    }
    out = out + value
    first = false
  }
  if out == "" {
    return fallback
  }
  return out
}

fn __render_human(report: dict) -> string {
  const summary = __safe_dict(report["summary"])
  let out = "provider tool-call scorecard: routes="
    + to_string(__safe_int(report["route_count"], 0))
    + " pass="
    + to_string(__safe_int(summary["pass"], 0))
    + " warn="
    + to_string(__safe_int(summary["warn"], 0))
    + " fail="
    + to_string(__safe_int(summary["fail"], 0))
    + "\n"
  const best = __safe_dict(summary["best_route"])
  const best_provider = __safe_string(best["provider"], "")
  if best_provider != "" {
    out = out + "best="
      + best_provider
      + " "
      + __safe_string(best["model"], "")
      + " score="
      + to_string(__safe_int(best["quality_score"], 0))
      + "\n"
  }
  const routes = __safe_list(report["routes"])
  for route in routes {
    if type_of(route) != "dict" {
      continue
    }
    const cases = __safe_int(route["case_count"], 0)
    const passed = __safe_int(route["successful_cases"], 0)
    out = out + "  "
      + __safe_string(route["provider"], "")
      + " "
      + __safe_string(route["model"], "")
      + " score="
      + to_string(__safe_int(route["quality_score"], 0))
      + " status="
      + __safe_string(route["status"], "")
      + " mode="
      + __safe_string(route["recommended_tool_mode"], "")
      + " pass="
      + to_string(passed)
      + "/"
      + to_string(cases)
      + " parseable="
      + to_string(__safe_int(route["parseable_tool_call_cases"], 0))
      + "/"
      + to_string(cases)
      + " actionless="
      + to_string(__safe_int(route["actionless_cases"], 0))
      + " issues="
      + __join_strings(__safe_list(route["issues"]), "-")
      + "\n"
  }
  return out
}

fn main(harness: Harness) -> int {
  const raw = harness.env.get_or("HARN_PROVIDER_TOOL_SCORECARD_PAYLOAD_JSON", "")
  if raw == "" {
    harness.stdio
      .eprintln(
      "internal error: HARN_PROVIDER_TOOL_SCORECARD_PAYLOAD_JSON not set by dispatch shim",
    )
    return 70
  }
  const json_mode = harness.env.get_or("HARN_OUTPUT_JSON", "0") == "1"
  if json_mode {
    const pretty = harness.env.get_or("HARN_PROVIDER_TOOL_SCORECARD_PAYLOAD_PRETTY", raw)
    harness.stdio.println(pretty)
  } else {
    const report = try {
      json_parse(raw)
    } catch (e) {
      harness.stdio
        .eprintln(
        "internal error: failed to parse provider-tool-scorecard payload: " + to_string(e),
      )
      return 70
    }
    const text = __render_human(report)
    const trimmed = if len(text) > 0 && text[len(text) - 1] == "\n" {
      text[0:len(text) - 1]
    } else {
      text
    }
    harness.stdio.println(trimmed)
  }
  return 0
}