import { h } from "../jsx";
import { FIRM } from "../branding";

// Reusable Project form body. Renders the field grid only — the surrounding
// <form>, submit/cancel buttons and the form-msg paragraph belong to the
// caller because /projects/new and the edit modal want different button
// labels and submit behaviour.
//
// Field IDs are intentionally identical to the ones used historically on
// /projects/new so the shared client module client/project-form.ts can read
// them via getElementById on either page (the two forms never coexist on a
// single page).
export function ProjectFormFields(): string {
  return (
    <div className="project-form-fields">
      <div className="form-field">
        <label htmlFor="project-type" data-i18n="projects.field.type">Typ</label>
        <select id="project-type" required>
          <option value="" disabled selected data-i18n="projects.field.type.choose">Bitte w&auml;hlen&hellip;</option>
          <option value="client" data-i18n="projects.type.client">Mandant (Wurzel)</option>
          <option value="litigation" data-i18n="projects.type.litigation">Streitsache</option>
          <option value="patent" data-i18n="projects.type.patent">Patent</option>
          <option value="case" data-i18n="projects.type.case">Verfahren</option>
          <option value="project" data-i18n="projects.type.project">Projekt (generisch)</option>
          <option value="other" data-i18n="projects.type.other">Sonstiges</option>
        </select>
      </div>

      <div className="form-field" id="projekt-parent-wrap" style="display:none">
        <label htmlFor="projekt-parent-input" data-i18n="projects.field.parent">&Uuml;bergeordnetes Projekt</label>
        <input
          type="text"
          id="projekt-parent-input"
          placeholder="Titel eingeben, um ein &Uuml;berprojekt zu suchen..."
          data-i18n-placeholder="projects.field.parent.placeholder"
          autocomplete="off"
        />
        <input type="hidden" id="projekt-parent-id" />
        <div id="projekt-parent-suggestions" className="collab-suggestions" />
        <p className="form-hint" data-i18n="projects.field.parent.hint">
          Leer lassen f&uuml;r ein Wurzel-Projekt (typisch: Mandant).
        </p>
      </div>

      <div className="form-field">
        <label htmlFor="project-title" data-i18n="projects.field.title">Titel</label>
        <input
          type="text"
          id="project-title"
          required
          placeholder="z.B. Siemens AG | Siemens v. Huawei | EP 1 234 567"
          data-i18n-placeholder="projects.field.title.placeholder"
        />
      </div>

      <div className="form-field">
        <label htmlFor="project-ref" data-i18n="projects.field.reference">Interne Referenz (optional)</label>
        <input
          type="text"
          id="project-ref"
          placeholder={`z.B. ${FIRM}-2026-0042`}
          data-i18n-placeholder="projects.field.reference.placeholder"
        />
      </div>

      <div className="form-field-row">
        <div className="form-field">
          <label htmlFor="project-client-number" data-i18n="projects.field.client_number">Client-Nr. (6 Ziffern)</label>
          <input
            type="text"
            id="project-client-number"
            pattern="[0-9]{6}"
            maxLength={6}
            placeholder="001234"
          />
        </div>
        <div className="form-field">
          <label htmlFor="project-matter-number" data-i18n="projects.field.matter_number">Matter-Nr. (6 Ziffern)</label>
          <input
            type="text"
            id="project-matter-number"
            pattern="[0-9]{6}"
            maxLength={6}
            placeholder="000567"
          />
        </div>
      </div>
      <p className="form-hint" data-i18n="projects.field.clientmatter.hint">
        {`${FIRM}-Billing-Nummern. Format CCCCCC.MMMMMM. Client-Nr. wird an Unterprojekte vererbt
        (überschreibbar).`}
      </p>

      <div className="form-field">
        <label htmlFor="project-billing-ref" data-i18n="projects.field.billing_reference">Billing-Referenz (optional)</label>
        <input
          type="text"
          id="project-billing-ref"
          placeholder="z.B. PO-2026-0815"
        />
      </div>

      <div className="form-field">
        <label htmlFor="project-netdocs" data-i18n="projects.field.netdocuments_url">netDocuments-URL (optional)</label>
        <input
          type="url"
          id="project-netdocs"
          placeholder="https://netdocs.example.com/..."
        />
      </div>

      {/* Client-specific */}
      <div className="projekt-fields projekt-fields-client" id="fields-client" style="display:none">
        <div className="form-field-row">
          <div className="form-field">
            <label htmlFor="project-industry" data-i18n="projects.field.industry">Branche</label>
            <input type="text" id="project-industry" placeholder="z.B. industrial" />
          </div>
          <div className="form-field">
            <label htmlFor="project-country" data-i18n="projects.field.country">Land (ISO-2)</label>
            <input type="text" id="project-country" maxLength={2} placeholder="DE" />
          </div>
        </div>
      </div>

      {/* Patent-specific */}
      <div className="projekt-fields projekt-fields-patent" id="fields-patent" style="display:none">
        <div className="form-field">
          <label htmlFor="project-patent-number" data-i18n="projects.field.patent_number">Patentnummer</label>
          <input type="text" id="project-patent-number" placeholder="EP 1 234 567" />
        </div>
        <div className="form-field-row">
          <div className="form-field">
            <label htmlFor="project-filing-date" data-i18n="projects.field.filing_date">Anmeldetag</label>
            <input type="date" id="project-filing-date" />
          </div>
          <div className="form-field">
            <label htmlFor="project-grant-date" data-i18n="projects.field.grant_date">Erteilungstag</label>
            <input type="date" id="project-grant-date" />
          </div>
        </div>
      </div>

      {/* Litigation-specific */}
      <div className="projekt-fields projekt-fields-litigation" id="fields-litigation" style="display:none">
        <div className="form-field">
          <label htmlFor="project-opponent-code" data-i18n="projects.field.opponent_code">Gegner-K&uuml;rzel</label>
          <input
            type="text"
            id="project-opponent-code"
            maxLength={16}
            pattern="[A-Z0-9-]{1,16}"
            placeholder="OPNT"
            data-i18n-placeholder="projects.field.opponent_code.placeholder"
          />
          <p className="form-hint" data-i18n="projects.field.opponent_code.hint">
            Kurzes K&uuml;rzel der Gegenseite (Grossbuchstaben, Ziffern, Bindestriche, max. 16 Zeichen). Wird als mittleres Segment in automatisch abgeleiteten Projekt-Codes verwendet (z.B. EXMPL.OPNT.567.INF.CFI).
          </p>
        </div>
      </div>

      {/* Case-specific */}
      <div className="projekt-fields projekt-fields-case" id="fields-case" style="display:none">
        <div className="form-field-row">
          <div className="form-field">
            <label htmlFor="project-court" data-i18n="projects.field.court">Gericht</label>
            <input type="text" id="project-court" placeholder="UPC_CFI_Munich" />
          </div>
          <div className="form-field">
            <label htmlFor="project-case-number" data-i18n="projects.field.case_number">Aktenzeichen (Gericht)</label>
            <input type="text" id="project-case-number" placeholder="UPC_CFI_123/2026" />
          </div>
        </div>

        <div className="form-field">
          <label htmlFor="project-proceeding-type-id" data-i18n="projects.field.proceeding_type">Verfahrenstyp</label>
          <select id="project-proceeding-type-id">
            <option value="" data-i18n="projects.field.proceeding_type.unset">(nicht gesetzt)</option>
          </select>
          <p className="form-hint" data-i18n="projects.field.proceeding_type.hint">
            Bestimmt, welche Schriftsätze-Vorlagen für dieses Verfahren angezeigt werden.
          </p>
        </div>

        <div className="form-field">
          <label htmlFor="project-our-side" data-i18n="projects.field.client_role">Mandantenrolle</label>
          <select id="project-our-side">
            <option value="" data-i18n="projects.field.client_role.unset">Unbekannt</option>
            <optgroup data-i18n-label="projects.field.client_role.group.active" label="Aktiv (wir greifen an)">
              <option value="claimant" data-i18n="projects.field.client_role.claimant">Kl&auml;gerseite</option>
              <option value="applicant" data-i18n="projects.field.client_role.applicant">Antragsteller</option>
              <option value="appellant" data-i18n="projects.field.client_role.appellant">Berufungsf&uuml;hrer</option>
            </optgroup>
            <optgroup data-i18n-label="projects.field.client_role.group.reactive" label="Reaktiv (wir verteidigen)">
              <option value="defendant" data-i18n="projects.field.client_role.defendant">Beklagtenseite</option>
              <option value="respondent" data-i18n="projects.field.client_role.respondent">Antragsgegner</option>
            </optgroup>
            <optgroup data-i18n-label="projects.field.client_role.group.other" label="Dritte / Sonstige">
              <option value="third_party" data-i18n="projects.field.client_role.third_party">Streithelfer / Dritter</option>
              <option value="other" data-i18n="projects.field.client_role.other">Sonstige Beteiligte</option>
            </optgroup>
          </select>
          <p className="form-hint" data-i18n="projects.field.client_role.hint">
            Bestimmt die Voreinstellung der Perspektive im Fristenrechner-Determinator: Aktiv &rarr; Kl&auml;gerseite, Reaktiv &rarr; Beklagtenseite. L&auml;sst sich dort jederzeit &uuml;berschreiben.
          </p>
        </div>
      </div>

      <div className="form-field">
        <label htmlFor="project-description" data-i18n="projects.field.description">Notizen</label>
        <textarea id="project-description" rows={4} placeholder="Kurznotizen zum Projekt (optional)..." data-i18n-placeholder="projects.field.description.placeholder" />
      </div>

      <div className="form-field">
        <label htmlFor="project-status" data-i18n="projects.field.status">Status</label>
        <select id="project-status">
          <option value="active" data-i18n="projects.filter.status.active">Aktiv</option>
          <option value="closed" data-i18n="projects.filter.status.closed">Abgeschlossen</option>
          <option value="archived" data-i18n="projects.filter.status.archived">Archiviert</option>
        </select>
      </div>
    </div>
  );
}