import type { CaptureResult, KeyPressResult } from "../types/global";
import { validateLookupPackage, type LookupValidationStatus } from "./genshinLookup";

export type ScanEntryMode = "visible-inventory" | "direct-inventory" | "paimon-menu" | "auto-entry";

export interface AutoScanEntryAction {
  type: "key" | "click-artifact-tab" | "click-first-artifact" | "capture-preflight";
  key?: "ESC" | "B";
  label: string;
}

export interface AutoScanEntryPreflight {
  ok: boolean;
  reason: string;
}

export function buildAutoScanEntryPlan(mode: ScanEntryMode): AutoScanEntryAction[] {
  if (mode === "visible-inventory") {
    return [{ type: "capture-preflight", label: "Capture visible artifact inventory" }];
  }
  if (mode === "direct-inventory") {
    return [
      { type: "key", key: "B", label: "Open inventory from the current world state" },
      { type: "click-artifact-tab", label: "Select artifact inventory tab" },
      { type: "click-first-artifact", label: "Select first visible artifact so the detail card is open" },
      { type: "capture-preflight", label: "Verify artifact inventory grid and detail card" },
    ];
  }
  if (mode === "auto-entry") {
    return [
      { type: "key", key: "B", label: "Try direct inventory entry from world" },
      { type: "click-artifact-tab", label: "Select artifact inventory tab if inventory opened" },
      { type: "click-first-artifact", label: "Select first visible artifact so the detail card is open" },
      { type: "key", key: "ESC", label: "Fallback: Inventory Kamera step from already-open Paimon menu" },
      { type: "key", key: "ESC", label: "Fallback: close Paimon menu if ESC opened or left it visible" },
      { type: "key", key: "B", label: "Fallback: open inventory from world" },
      { type: "click-artifact-tab", label: "Fallback: select artifact inventory tab" },
      { type: "click-first-artifact", label: "Fallback: select first visible artifact" },
      { type: "capture-preflight", label: "Verify artifact inventory grid and detail card" },
    ];
  }
  return [
    { type: "key", key: "ESC", label: "Inventory Kamera step: leave the already-open Paimon menu" },
    { type: "key", key: "ESC", label: "If Paimon is still visible, close it before opening inventory" },
    { type: "key", key: "B", label: "Inventory Kamera step: open inventory from world" },
    { type: "click-artifact-tab", label: "Inventory Kamera step: select artifact inventory tab" },
    { type: "click-first-artifact", label: "Select first visible artifact so the detail card is open" },
    { type: "capture-preflight", label: "Verify artifact inventory grid and detail card" },
  ];
}

export function artifactTabClickTarget(capture: CaptureResult): { x: number; y: number } {
  return {
    x: Math.round(capture.width * (448 / 1280)),
    y: Math.round(capture.height * (31 / 720)),
  };
}

export function keyPressBlocked(result: KeyPressResult | null | undefined) {
  return !result?.ok || Boolean(result.inputBlocked);
}

export function validateAutoScanEntryPreflight(
  capture: CaptureResult | null,
  lookupStatus: LookupValidationStatus = validateLookupPackage(),
): AutoScanEntryPreflight {
  if (!lookupStatus.valid) {
    return {
      ok: false,
      reason: `Lookup invalid: ${lookupStatus.errors[0] ?? "unknown lookup error"}`,
    };
  }
  if (!capture) return { ok: false, reason: "Keine Capture-Daten fuer den Auto-Scan-Start." };
  if (capture.captureTarget === "primary-screen") {
    return { ok: false, reason: "Auto-Scan blockiert: Capture stammt vom Primary Screen statt vom Genshin-Client." };
  }
  if (capture.layout?.warning) return { ok: false, reason: capture.layout.warning };
  if (capture.paimonMenu?.present) {
    return { ok: false, reason: `Paimon-Menue erkannt (${capture.paimonMenu.confidence}%). Auto-Scan startet erst im Artifact-Inventar mit sichtbarer Detailkarte.` };
  }
  if (!capture.inventoryGrid || capture.inventoryGrid.source === "missing" || capture.inventoryGrid.centers.length === 0) {
    return { ok: false, reason: "Kein verlaessliches Artifact-Grid erkannt. Artifact-Inventar sichtbar lassen." };
  }
  if (!capture.artifactDetail?.present) {
    const confidence = capture.artifactDetail ? ` (${capture.artifactDetail.confidence}% Detail-Marker)` : "";
    return { ok: false, reason: `Keine Artifact-Detailansicht erkannt${confidence}. Artifact-Inventar mit sichtbarer Detailkarte oeffnen.` };
  }
  return { ok: true, reason: "" };
}