import { useEffect, useState } from "react";
import { get } from "../../api/client";
import type { Project } from "../../api/types";
import type { ItemFilters } from "../../hooks/useItems";

interface ItemsToolbarProps {
  filters: ItemFilters;
  onFilterChange: (partial: Partial<ItemFilters>) => void;
  layout: "horizontal" | "vertical";
  onLayoutChange: (layout: "horizontal" | "vertical") => void;
  onExport: () => void;
  onImport: () => void;
  onCreate: () => void;
  isEditor: boolean;
}

export function ItemsToolbar({
  filters,
  onFilterChange,
  layout,
  onLayoutChange,
  onExport,
  onImport,
  onCreate,
  isEditor,
}: ItemsToolbarProps) {
  const [projects, setProjects] = useState<Project[]>([]);

  useEffect(() => {
    get<Project[]>("/api/projects")
      .then(setProjects)
      .catch(() => {});
  }, []);

  const scopeBtn = (scope: ItemFilters["searchScope"], label: string) => (
    <button
      onClick={() => onFilterChange({ searchScope: scope })}
      style={{
        padding: "var(--d-input-py) var(--d-input-px)",
        fontSize: "var(--d-input-font)",
        border: "none",
        borderRadius: "0.3rem",
        cursor: "pointer",
        backgroundColor:
          filters.searchScope === scope
            ? "var(--ctp-mauve)"
            : "var(--ctp-surface1)",
        color:
          filters.searchScope === scope
            ? "var(--ctp-crust)"
            : "var(--ctp-subtext1)",
      }}
    >
      {label}
    </button>
  );

  return (
    <div
      style={{
        display: "flex",
        flexWrap: "wrap",
        gap: "var(--d-toolbar-gap)",
        alignItems: "center",
        padding: "var(--d-toolbar-py) 0",
        borderBottom: "1px solid var(--ctp-surface0)",
        marginBottom: "var(--d-toolbar-mb)",
      }}
    >
      {/* Search */}
      <input
        type="text"
        placeholder="Search items... (Ctrl+F)"
        value={filters.search}
        onChange={(e) => onFilterChange({ search: e.target.value })}
        style={{
          flex: 1,
          minWidth: 200,
          padding: "var(--d-input-py) var(--d-input-px)",
          backgroundColor: "var(--ctp-surface0)",
          border: "1px solid var(--ctp-surface1)",
          borderRadius: "0.4rem",
          color: "var(--ctp-text)",
          fontSize: "var(--d-input-font)",
        }}
      />

      {/* Search scope */}
      <div style={{ display: "flex", gap: "0.25rem" }}>
        {scopeBtn("all", "All")}
        {scopeBtn("part_number", "PN")}
        {scopeBtn("description", "Desc")}
      </div>

      {/* Type filter */}
      <select
        value={filters.type}
        onChange={(e) => onFilterChange({ type: e.target.value })}
        style={selectStyle}
      >
        <option value="">All Types</option>
        <option value="part">Part</option>
        <option value="assembly">Assembly</option>
        <option value="document">Document</option>
        <option value="tooling">Tooling</option>
      </select>

      {/* Project filter */}
      <select
        value={filters.project}
        onChange={(e) => onFilterChange({ project: e.target.value })}
        style={selectStyle}
      >
        <option value="">All Projects</option>
        {projects.map((p) => (
          <option key={p.code} value={p.code}>
            {p.code}
            {p.name ? ` — ${p.name}` : ""}
          </option>
        ))}
      </select>

      {/* Layout toggle */}
      <button
        onClick={() =>
          onLayoutChange(layout === "horizontal" ? "vertical" : "horizontal")
        }
        title={`Switch to ${layout === "horizontal" ? "vertical" : "horizontal"} layout`}
        style={toolBtnStyle}
      >
        {layout === "horizontal" ? "⬌" : "⬍"}
      </button>

      {/* Export */}
      <button onClick={onExport} style={toolBtnStyle} title="Export CSV">
        Export
      </button>

      {/* Import (editor only) */}
      {isEditor && (
        <button onClick={onImport} style={toolBtnStyle} title="Import CSV">
          Import
        </button>
      )}

      {/* Create (editor only) */}
      {isEditor && (
        <button
          onClick={onCreate}
          style={{
            ...toolBtnStyle,
            backgroundColor: "var(--ctp-mauve)",
            color: "var(--ctp-crust)",
          }}
        >
          + New
        </button>
      )}
    </div>
  );
}

const selectStyle: React.CSSProperties = {
  padding: "var(--d-input-py) var(--d-input-px)",
  backgroundColor: "var(--ctp-surface0)",
  border: "1px solid var(--ctp-surface1)",
  borderRadius: "0.4rem",
  color: "var(--ctp-text)",
  fontSize: "var(--d-input-font)",
};

const toolBtnStyle: React.CSSProperties = {
  padding: "var(--d-input-py) var(--d-input-px)",
  backgroundColor: "var(--ctp-surface1)",
  border: "none",
  borderRadius: "0.4rem",
  color: "var(--ctp-text)",
  fontSize: "var(--d-input-font)",
  cursor: "pointer",
};