Function buildAgentSelectScript

src/agent-backend.ts:201–251

(
  selector: string,
  indexValue: number,
  value: string | undefined,
  label: string | undefined,
  optionIndex: number | undefined
)

}

function buildAgentSelectScript(
  selector: string,
  indexValue: number,
  value: string | undefined,
  label: string | undefined,
  optionIndex: number | undefined
): string {
  const payload = {
    selector,
    index: indexValue,
    value: value ?? null,
    label: label ?? null,
    optionIndex: Number.isFinite(optionIndex) ? optionIndex : null,
  };
  return buildEvalScript(`
    const payload = ${JSON.stringify(payload)};
    let matches = [];
    try {
      matches = Array.from(document.querySelectorAll(payload.selector));
    } catch {
      return { ok: false, error: "Invalid selector" };
    }
    const element = matches[payload.index];
    if (!element) return { ok: false, error: "Element not found" };
    if (!element.tagName || element.tagName.toUpperCase() !== "SELECT") {
      return { ok: false, error: "Element is not a select" };
    }
    const options = Array.from(element.options || []);
    let chosen = null;
    if (payload.value !== null) {
      chosen = options.find((option) => option.value === payload.value) || null;
    }
    if (!chosen && payload.label !== null) {
      const target = payload.label.trim();
      chosen = options.find((option) => (option.label || option.textContent || "").trim() === target) || null;
    }
    if (!chosen && payload.optionIndex !== null) {
      chosen = options[payload.optionIndex] || null;
    }
    if (!chosen) return { ok: false, error: "Option not found" };
    element.value = chosen.value;
    chosen.selected = true;
    element.dispatchEvent(new Event("input", { bubbles: true }));
    element.dispatchEvent(new Event("change", { bubbles: true }));
    return {
      ok: true,
      value: element.value,
      label: (chosen.label || chosen.textContent || "").trim(),
    };
  `);
}

function buildAgentPageTextScript(limit: number, pattern: string | null, flags: string): string {
  const payload = { limit, pattern, flags };