export function getPrinterImage(model: string | null | undefined): string {
  if (!model) return '/img/printers/default.png';
  const m = model.toLowerCase().replace(/\s+/g, '');
  if (m.includes('x1e')) return '/img/printers/x1e.png';
  if (m.includes('x1c') || m.includes('x1carbon')) return '/img/printers/x1c.png';
  if (m.includes('x1')) return '/img/printers/x1c.png';
  if (m.includes('x2d') || m === 'n6') return '/img/printers/x2d.png';
  if (m.includes('h2dpro') || m.includes('h2d-pro')) return '/img/printers/h2dpro.png';
  if (m.includes('h2d')) return '/img/printers/h2d.png';
  if (m.includes('h2c')) return '/img/printers/h2c.png';
  if (m.includes('h2s')) return '/img/printers/h2d.png';
  if (m.includes('p2s')) return '/img/printers/p1s.png';
  if (m.includes('p1s')) return '/img/printers/p1s.png';
  if (m.includes('p1p')) return '/img/printers/p1p.png';
  if (m.includes('a2l') || m === 'n9') return '/img/printers/a2l.png';
  if (m.includes('a1mini')) return '/img/printers/a1mini.png';
  if (m.includes('a1')) return '/img/printers/a1.png';
  return '/img/printers/default.png';
}

// G-code interchange families (#2578). Mirrors backend GCODE_COMPAT_FAMILIES
// in backend/app/utils/printer_models.py — keep the two in sync. A sliced 3MF
// may target a different model ONLY within its family; everything else is
// exact-match only.
const GCODE_COMPAT_FAMILIES: ReadonlyArray<ReadonlySet<string>> = [
  new Set(['X1', 'X1C', 'X1E', 'P1P', 'P1S']),
];

/** True when G-code sliced for one model may be dispatched to the other.
 *  Unknown/missing metadata on either side returns true (can't validate). */
export function isGcodeCompatible(
  slicedForModel: string | null | undefined,
  targetModel: string | null | undefined,
): boolean {
  if (!slicedForModel || !targetModel) return true;
  const norm = (m: string) => m.trim().toUpperCase().replace(/[\s-]/g, '');
  const a = norm(slicedForModel);
  const b = norm(targetModel);
  if (a === b) return true;
  return GCODE_COMPAT_FAMILIES.some((family) => family.has(a) && family.has(b));
}

export function getWifiStrength(rssi: number): { labelKey: string; color: string; bars: number } {
  if (rssi >= -50) return { labelKey: 'printers.wifiSignal.excellent', color: 'text-bambu-green', bars: 4 };
  if (rssi >= -60) return { labelKey: 'printers.wifiSignal.good', color: 'text-bambu-green', bars: 3 };
  if (rssi >= -70) return { labelKey: 'printers.wifiSignal.fair', color: 'text-yellow-400', bars: 2 };
  if (rssi >= -80) return { labelKey: 'printers.wifiSignal.weak', color: 'text-orange-400', bars: 1 };
  return { labelKey: 'printers.wifiSignal.veryWeak', color: 'text-red-400', bars: 1 };
}

import type { PrintQueueItem } from '../api/client';

/**
 * Filters queue items based on printer compatibility (filament types and colors).
 * Mirrors backend _find_idle_printer_for_model() logic.
 * @param items - Array of queue items to filter
 * @param loadedFilamentTypes - Set of loaded filament types (e.g., "PLA", "PETG")
 * @param loadedFilaments - Set of loaded filament type+color pairs (e.g., "PLA:ffffff", "PETG:ff0000")
 * @param loadedVariants - Set of loaded type+color+tray_info_idx triples
 *   (e.g., "PLA:ffffff:GFA01"; the idx is "" for custom/third-party spools). Used to
 *   distinguish Bambu PLA sub-variants (Basic GFA00 / Matte GFA01 / Silk GFA06) that
 *   share a base type+colour, mirroring the backend _get_missing_force_color_slots (#2650).
 *   When omitted, force matching falls back to type+colour so the hint is never stricter
 *   than the data available.
 * @returns Array of compatible queue items
 */
export function filterCompatibleQueueItems(
  items: PrintQueueItem[],
  loadedFilamentTypes?: Set<string>,
  loadedFilaments?: Set<string>,
  loadedVariants?: Set<string>
): PrintQueueItem[] {
  return items.filter(item => {
    // Type check: all required filament types must be loaded
    if (item.required_filament_types && item.required_filament_types.length > 0 && loadedFilamentTypes !== undefined) {
      if (!item.required_filament_types.every((t: string) => loadedFilamentTypes.has(t.toUpperCase()))) {
        return false;
      }
    }

    // Color check: evaluate force_color_match per slot
    // Only apply when loadedFilaments is provided (not undefined).
    // An empty Set means no filaments are loaded — force-matched slots cannot match.
    if (item.filament_overrides && item.filament_overrides.length > 0 && loadedFilaments !== undefined) {
      const forceOverrides = item.filament_overrides.filter(o => o.force_color_match === true);
      const prefOverrides = item.filament_overrides.filter(o => o.force_color_match !== true);

      // All force-matched slots must have an exact type+color match — and, when the
      // override carries a tray_info_idx, the same variant too (a loaded tray with a
      // blank idx still satisfies it, matching the backend's type+colour fallback).
      if (forceOverrides.length > 0) {
        const allForceMatch = forceOverrides.every(o => {
          const oType = (o.type || '').toUpperCase();
          const oColor = (o.color || '').replace('#', '').toLowerCase().slice(0, 6);
          const oIdx = o.tray_info_idx || '';
          // No variant on the override, or no variant data supplied → type+colour only.
          if (!oIdx || loadedVariants === undefined) {
            return loadedFilaments.has(`${oType}:${oColor}`);
          }
          // Variant-specific: same idx, or a same-colour tray that reports no idx.
          return loadedVariants.has(`${oType}:${oColor}:${oIdx}`) || loadedVariants.has(`${oType}:${oColor}:`);
        });
        if (!allForceMatch) return false;
      }

      // Preference-only overrides: at least one color must match (existing behaviour)
      if (prefOverrides.length > 0 && forceOverrides.length === 0) {
        const hasColorMatch = prefOverrides.some(o => {
          const oType = (o.type || '').toUpperCase();
          const oColor = (o.color || '').replace('#', '').toLowerCase().slice(0, 6);
          return loadedFilaments.has(`${oType}:${oColor}`);
        });
        if (!hasColorMatch) return false;
      }
    }

    return true;
  });
}