import { customElement, noShadowDOM } from "solid-element";
import { onMount, onCleanup } from "solid-js";
import { useCommander } from "./hooks";
import { CommanderInput } from "./CommanderInput";
import { CommanderEntries } from "./CommanderEntries";
import type { MdCommanderProps } from "./types";

export { CommanderInput } from './CommanderInput';
export type { CommanderInputProps } from './CommanderInput';
export { CommanderEntries } from './CommanderEntries';
export type { CommanderEntriesProps } from './CommanderEntries';
export type {
    MdCommanderProps,
    MdCommanderCommand,
    MdCommanderOption,
    MdCommanderOptionType,
    CommanderEntry,
    CompletionItem,
} from './types';

customElement<MdCommanderProps>(
  "md-commander",
  { placeholder: "", class: "", height: "" },
  (props, { element }) => {
    noShadowDOM();

    const commander = useCommander(props.commands);

    const handleKeyDown = (e: KeyboardEvent) => {
      if (commander.showCompletions() && commander.completions().length > 0) {
        if (e.key === "ArrowDown") {
          e.preventDefault();
          commander.setSelectedCompletion(
            (prev) => (prev + 1) % commander.completions().length,
          );
          return;
        }
        if (e.key === "ArrowUp") {
          e.preventDefault();
          commander.setSelectedCompletion(
            (prev) => (prev - 1 + commander.completions().length) % commander.completions().length,
          );
          return;
        }
        if (e.key === "Tab") {
          e.preventDefault();
          commander.acceptCompletion();
          return;
        }
        if (e.key === "Escape") {
          commander.setShowCompletions(false);
          return;
        }
      }

      if (e.key === "Enter" && !e.shiftKey) {
        e.preventDefault();
        commander.handleCommand();
      }
    };

    const heightStyle = () => props.height || "400px";

    onMount(() => {
      const handleClickOutside = (e: MouseEvent) => {
        if (!element?.contains(e.target as Node)) {
          commander.setShowCompletions(false);
        }
      };
      document.addEventListener("click", handleClickOutside);
      onCleanup(() => document.removeEventListener("click", handleClickOutside));
    });

    return (
      <div
        class={`md-commander flex flex-col border border-gray-300 rounded-lg overflow-visible ${props.class || ""}`}
        style={{ height: heightStyle() }}
      >
          {/* 命令执行结果 */}
          <CommanderEntries entries={commander.entries} />

        {/* 命令输入框 */}
        <div class="relative">
          <CommanderInput
            placeholder={props.placeholder}
            inputValue={commander.inputValue}
            onInput={(e) => {
              commander.setInputValue((e.target as HTMLInputElement).value);
              commander.updateCompletions();
            }}
            onKeyDown={handleKeyDown}
            onFocus={() => {
              commander.setIsFocused(true);
              commander.updateCompletions();
            }}
            onBlur={() => commander.setIsFocused(false)}
            onSubmit={commander.handleCommand}
            showCompletions={commander.showCompletions}
            completions={commander.completions}
            selectedCompletion={commander.selectedCompletion}
            onSelectCompletion={commander.setSelectedCompletion}
            onAcceptCompletion={commander.acceptCompletion}
          />
        </div>
      </div>
    );
  },
);