nomina/ui/src/components/rules/ExtensionTab.tsx

import { useRuleStore } from "../../stores/ruleStore";
import type { ExtensionConfig, StepMode } from "../../types/rules";

const extModes = ["Same", "Lower", "Upper", "Title", "Extra", "Remove", "Fixed"] as const;

export function ExtensionTab() {
  const rule = useRuleStore((s) => s.rules.extension) as ExtensionConfig;
  const updateRule = useRuleStore((s) => s.updateRule);

  const update = (changes: Partial<ExtensionConfig>) => updateRule("extension", changes);

  return (
    <div className="flex flex-col gap-3 text-xs">
      <div className="flex gap-3 items-end">
        <label className="flex flex-col gap-1 w-40">
          <span style={{ color: "var(--text-secondary)" }}>Extension mode</span>
          <select
            value={rule.mode}
            onChange={(e) => update({ mode: e.target.value as ExtensionConfig["mode"] })}
            className="px-2 py-1.5 rounded border"
            style={{
              background: "var(--bg-primary)",
              borderColor: "var(--border)",
              color: "var(--text-primary)",
            }}
          >
            {extModes.map((m) => (
              <option key={m} value={m}>{m}</option>
            ))}
          </select>
        </label>

        {(rule.mode === "Fixed" || rule.mode === "Extra") && (
          <label className="flex flex-col flex-1 gap-1">
            <span style={{ color: "var(--text-secondary)" }}>
              {rule.mode === "Extra" ? "Extra extension" : "New extension"}
            </span>
            <input
              type="text"
              value={rule.fixed_value}
              onChange={(e) => update({ fixed_value: e.target.value })}
              className="px-2 py-1.5 rounded border"
              style={{
                background: "var(--bg-primary)",
                borderColor: "var(--border)",
                color: "var(--text-primary)",
              }}
              placeholder="e.g. bak, txt..."
            />
          </label>
        )}
      </div>

      <div className="flex items-center gap-2">
        <div className="flex-1" />
        <span style={{ color: "var(--text-secondary)" }}>Mode:</span>
        {(["Simultaneous", "Sequential"] as StepMode[]).map((mode) => (
          <label key={mode} className="flex items-center gap-1 cursor-pointer">
            <input
              type="radio"
              name="ext-mode"
              checked={rule.step_mode === mode}
              onChange={() => update({ step_mode: mode })}
            />
            <span>{mode}</span>
          </label>
        ))}
      </div>
    </div>
  );
}