import { WORKSPACES, type UiSettings } from "../app/model";
import { Icon } from "../components/icons";
import { WorkspaceHeader } from "../components/states";

type SettingsViewProps = {
  settings: UiSettings;
  saveNotice: string;
  storageFailed: boolean;
  storageConfirmed: boolean;
  onChange: (patch: Partial<UiSettings>) => void;
  onReset: () => void;
};

type OptionCardProps = {
  checked: boolean;
  description: string;
  name: string;
  onChange: () => void;
  title: string;
};

function OptionCard({ checked, description, name, onChange, title }: OptionCardProps) {
  const inputId = `${name}-${title.toLowerCase().replace(/[^a-z0-9]+/g, "-")}`;
  return (
    <label className={`preference-option ${checked ? "selected" : ""}`} htmlFor={inputId}>
      <input className="sr-only" id={inputId} type="radio" name={name} checked={checked} onChange={onChange} />
      <span className="preference-option-indicator" aria-hidden="true" />
      <span>
        <strong>{title}</strong>
        <small>{description}</small>
      </span>
    </label>
  );
}

export function SettingsView({ settings, saveNotice, storageFailed, storageConfirmed, onChange, onReset }: SettingsViewProps) {
  const headerAction = (
    <div className="settings-header-status">
      {storageConfirmed && !storageFailed ? <span className="settings-saved-automatically"><Icon name="check" />Saved automatically in this browser</span> : null}
      <span className="settings-save-feedback" role="status" aria-live="polite">{saveNotice}</span>
    </div>
  );

  return (
    <>
      <WorkspaceHeader
        eyebrow="Workspace 05 · Local preferences"
        title="Settings"
        description="Browser-local display defaults for this device. Investigation evidence is never stored here."
        action={headerAction}
      />
      <div className="settings-layout">
        <div className="settings-preferences">
          <section className="settings-section panel" aria-labelledby="display-time-heading">
            <header>
              <Icon name="clock" />
              <div>
                <h2 id="display-time-heading">Display & time</h2>
                <p>Choose a stable forensic reference or a local reading context.</p>
              </div>
            </header>
            <fieldset>
              <legend>Timestamp display</legend>
              <div className="preference-option-grid">
                <OptionCard name="timestamp-display" title="UTC" description="Stable forensic reference time" checked={settings.timestampDisplay === "utc"} onChange={() => onChange({ timestampDisplay: "utc" })} />
                <OptionCard name="timestamp-display" title="Local browser time" description="Useful for local investigation context" checked={settings.timestampDisplay === "local"} onChange={() => onChange({ timestampDisplay: "local" })} />
              </div>
            </fieldset>
            <fieldset>
              <legend>Interface density</legend>
              <div className="preference-option-grid">
                <OptionCard name="density" title="Comfortable" description="More breathing room for review" checked={settings.density === "comfortable"} onChange={() => onChange({ density: "comfortable" })} />
                <OptionCard name="density" title="Compact" description="More evidence visible at once" checked={settings.density === "compact"} onChange={() => onChange({ density: "compact" })} />
              </div>
            </fieldset>
          </section>

          <section className="settings-section panel" aria-labelledby="investigation-defaults-heading">
            <header>
              <Icon name="analysis" />
              <div>
                <h2 id="investigation-defaults-heading">Investigation defaults</h2>
                <p>New investigations use these defaults; matching display/export controls update immediately.</p>
              </div>
            </header>
            <div className="preference-rows">
              <label className="preference-row">
                <span>
                  <strong>Informational noise</strong>
                  <small>Hide routine informational events by default and update the current Timeline filter.</small>
                </span>
                <select aria-label="Default noise mode" value={settings.defaultNoise} onChange={(event) => onChange({ defaultNoise: event.target.value as UiSettings["defaultNoise"] })}>
                  <option value="attention">Hide by default</option>
                  <option value="all">Show by default</option>
                </select>
              </label>
              <label className="preference-row">
                <span>
                  <strong>Default workspace</strong>
                  <small>Workspace opened when EventLens starts without a deep link.</small>
                </span>
                <select aria-label="Default workspace" value={settings.defaultWorkspace} onChange={(event) => onChange({ defaultWorkspace: event.target.value as UiSettings["defaultWorkspace"] })}>
                  {WORKSPACES.map((workspace) => <option key={workspace} value={workspace}>{workspace[0].toUpperCase() + workspace.slice(1)}</option>)}
                </select>
              </label>
              <label className="preference-row preference-switch-row">
                <span>
                  <strong>Export redaction</strong>
                  <small>Recommended · Redaction remains best effort and should be reviewed.</small>
                </span>
                <span className="preference-switch">
                  <input className="sr-only" type="checkbox" role="switch" aria-label="Export redaction by default" checked={settings.defaultRedaction} onChange={(event) => onChange({ defaultRedaction: event.target.checked })} />
                  <span className="preference-switch-track" aria-hidden="true"><span /></span>
                  <b aria-hidden="true">{settings.defaultRedaction ? "On" : "Off"}</b>
                </span>
              </label>
            </div>
          </section>
        </div>

        <aside className="settings-privacy-panel panel" aria-labelledby="local-privacy-heading">
          <header>
            <Icon name="privacy" />
            <div>
              <p className="eyebrow">{storageFailed ? "Session only" : "Browser-local only"}</p>
              <h2 id="local-privacy-heading">Local data & privacy</h2>
            </div>
          </header>
          <p className="privacy-lead">{storageFailed ? "Preferences are available for this session only because browser storage is unavailable." : "Only your interface preferences remain in this browser."}</p>
          <div className="privacy-facts">
            <section>
              <strong>{storageFailed ? "Not saved to browser storage" : "Stored locally"}</strong>
              <span>{storageFailed ? "UI preferences for this session only" : "UI preferences only"}</span>
            </section>
            <section>
              <strong>Never stored there</strong>
              <ul>
                <li>Event text</li>
                <li>Analysis results</li>
                <li>Uploaded EVTX files</li>
                <li>Incident evidence</li>
              </ul>
            </section>
          </div>
          <details className="settings-technical-details">
            <summary>Technical details</summary>
            <p>{storageFailed ? "When browser storage is available, preferences use this validated record:" : "The browser uses one validated preference record:"}</p>
            <code>eventlens.preferences.v1</code>
          </details>
          <button type="button" className="secondary-button settings-reset" onClick={onReset}>
            <Icon name="reset" />Reset all preferences
          </button>
        </aside>
      </div>
    </>
  );
}