import { html } from "lit";
import { customElement, query, state } from "lit/decorators.js";
import Countries from "resources/countries.json" with { type: "json" };
import { translateText } from "./Utils";
import { BaseModal } from "./components/BaseModal";
import { modalHeader } from "./components/ui/ModalHeader";

@customElement("flag-input-modal")
export class FlagInputModal extends BaseModal {
  @query("#flag-input-modal") private modalRef!: HTMLElement;

  @state() private search = "";
  public returnTo = "";

  updated(changedProperties: Map<string | number | symbol, unknown>) {
    super.updated(changedProperties);
  }

  render() {
    const content = html`
      <div class="${this.modalContainerClass}">
        <div
          class="relative flex flex-col border-b border-white/10 pb-4 shrink-0"
        >
          ${modalHeader({
            title: translateText("flag_input.title"),
            onBack: () => this.close(),
            ariaLabel: translateText("common.back"),
          })}

          <div class="md:flex items-center gap-2 justify-center mt-4">
            <input
              class="h-12 w-full max-w-md border border-white/10 bg-black/60
              rounded-xl shadow-inner text-xl text-center focus:outline-none
              focus:ring-2 focus:ring-blue-500/50 focus:border-blue-500 text-white placeholder-white/30 transition-all"
              type="text"
              placeholder=${translateText("flag_input.search_flag")}
              @change=${this.handleSearch}
              @keyup=${this.handleSearch}
            />
          </div>
        </div>

        <div
          class="flex-1 overflow-y-auto px-6 pb-6 scrollbar-thin scrollbar-thumb-white/20 scrollbar-track-transparent mr-1"
        >
          <div class="pt-2 flex flex-wrap justify-center gap-4 min-h-min">
            ${Countries.filter(
              (country) =>
                !country.restricted && this.includedInSearch(country),
            ).map(
              (country) => html`
                <button
                  @click=${() => {
                    this.setFlag(country.code);
                    this.close();
                  }}
                  class="group relative flex flex-col items-center gap-2 p-3 rounded-xl border border-white/5 bg-white/5 hover:bg-white/10 hover:border-white/20 transition-all cursor-pointer
                      w-[100px] sm:w-[120px]"
                >
                  <img
                    class="w-full h-auto rounded shadow-sm group-hover:scale-105 transition-transform duration-200"
                    src="/flags/${country.code}.svg"
                    loading="lazy"
                    @error=${(e: Event) => {
                      const img = e.currentTarget as HTMLImageElement;
                      const fallback = "/flags/xx.svg";
                      if (img.src && !img.src.endsWith(fallback)) {
                        img.src = fallback;
                      }
                    }}
                  />
                  <span
                    class="text-xs font-bold text-gray-300 group-hover:text-white text-center leading-tight w-full whitespace-normal break-words"
                    >${country.name}</span
                  >
                </button>
              `,
            )}
          </div>
        </div>
      </div>
    `;

    if (this.inline) {
      return content;
    }

    return html`
      <o-modal
        id="flag-input-modal"
        title=${translateText("flag_input.title")}
        ?inline=${this.inline}
        hideHeader
        hideCloseButton
      >
        ${content}
      </o-modal>
    `;
  }

  private includedInSearch(country: { name: string; code: string }): boolean {
    return (
      country.name.toLowerCase().includes(this.search.toLowerCase()) ||
      country.code.toLowerCase().includes(this.search.toLowerCase())
    );
  }

  private handleSearch(event: Event) {
    this.search = (event.target as HTMLInputElement).value;
  }

  private setFlag(flag: string) {
    localStorage.setItem("flag", flag);
    this.dispatchEvent(
      new CustomEvent("flag-change", {
        detail: { flag },
        bubbles: true,
        composed: true,
      }),
    );
  }

  protected onOpen(): void {
    // No custom logic needed
  }

  protected onClose(): void {
    if (this.returnTo) {
      const returnEl = document.querySelector(this.returnTo) as any;
      if (returnEl?.open) {
        returnEl.open();
      }
      this.returnTo = "";
    }
  }
}