feat: implement save all

src/components/panel/Preview.svelte

@@ -1,60 +1,39 @@
 <script lang="ts">
-  import { PANEL_SETTINGS, type SlideDirectionType } from "$lib/constants";
+  import { PANEL_SETTINGS } from "$lib/constants";
   import { imageConfigState } from "$states/imageConfig.svelte";
   import { textConfigState } from "$states/textConfig.svelte";
   import { Image, Layer, Stage, Text } from "svelte-konva";
-  import { fly } from "svelte/transition";
 
   interface Props {
     text: string;
-    direction: SlideDirectionType;
+    stage: Stage | undefined;
   }
 
-  let { text, direction }: Props = $props();
-
-  let xDirection = $derived(direction == "next" ? PANEL_SETTINGS.PANEL_WIDTH : -PANEL_SETTINGS.PANEL_WIDTH);
+  let { text, stage = $bindable() }: Props = $props();
 
   let image: HTMLImageElement | undefined = imageConfigState.image;
 
-  let { align, fontSize, fontFamily, paddingX, offsetY, color } = textConfigState;
-
-  let x = $derived(paddingX);
-  let y = $derived(10 + offsetY);
-  let width = $derived(PANEL_SETTINGS.PANEL_WIDTH - 2 * paddingX);
+  let x = $derived(textConfigState.paddingX);
+  let y = $derived(10 + textConfigState.offsetY);
+  let width = $derived(PANEL_SETTINGS.PANEL_WIDTH - 2 * textConfigState.paddingX);
   let height = PANEL_SETTINGS.PANEL_HEIGHT_DEFAULT;
 </script>
 
-<div class="konva-wrapper" in:fly={{ x: xDirection, duration: 300 }} out:fly={{ x: -xDirection, duration: 300 }}>
-  <Stage width={320} height={100}>
-    <Layer>
-      <Image {image}></Image>
-      {$inspect(paddingX)}
-      <Text
-        {text}
-        {x}
-        {y}
-        {width}
-        {height}
-        fontSize={textConfigState.fontSize}
-        fill={textConfigState.color}
-        fontFamily={textConfigState.fontFamily}
-        align={textConfigState.align}
-        wrap="none"
-        ellipsis={true}
-      />
-    </Layer>
-  </Stage>
-</div>
-
-<style>
-  .konva-wrapper {
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-  }
-</style>
+<Stage width={320} height={100} bind:this={stage}>
+  <Layer>
+    <Image {image}></Image>
+    <Text
+      {text}
+      {x}
+      {y}
+      {width}
+      {height}
+      fontSize={textConfigState.fontSize}
+      fill={textConfigState.color}
+      fontFamily={textConfigState.fontFamily}
+      align={textConfigState.align}
+      wrap="none"
+      ellipsis={true}
+    />
+  </Layer>
+</Stage>

src/components/panel/PreviewAll.svelte

@@ -0,0 +1,22 @@
+<script lang="ts">
+  import { konvaAllStagesState } from "$states/konvaAllStages.svelte";
+  import { textsState } from "$states/texts.svelte";
+
+  import Preview from "./Preview.svelte";
+</script>
+
+<div class="outside-display">
+  {#each textsState.texts as { text, id }, idx (id)}
+    <Preview {text} bind:stage={konvaAllStagesState[idx]} />
+  {:else}
+    <p>No texts to preview</p>
+  {/each}
+</div>
+
+<style>
+  .outside-display {
+    position: fixed;
+    top: -1000px;
+    left: -1000px;
+  }
+</style>

src/components/panel/PreviewControls.svelte

@@ -3,6 +3,7 @@
   import IconArrowLeft from "$components/ui/Icons/IconArrowLeft.svelte";
   import IconArrowRight from "$components/ui/Icons/IconArrowRight.svelte";
   import type { SlideDirectionType } from "$lib/constants";
+  import { PANEL_SETTINGS } from "$lib/constants";
 
   interface Props {
     current: number;
@@ -24,6 +25,8 @@
     if (current < max - 1) current++;
     direction = "next";
   }
+
+  let xDirection = $derived(direction == "next" ? PANEL_SETTINGS.PANEL_WIDTH : -PANEL_SETTINGS.PANEL_WIDTH);
 </script>
 
 <Button icon={IconArrowLeft} type="mini" onclick={prev} disabled={isFirst} />

src/components/panel/PreviewManager.svelte

@@ -4,16 +4,22 @@
   import Button from "$components/ui/Button.svelte";
   import IconDownload from "$components/ui/Icons/IconDownload.svelte";
   import IconEmpty from "$components/ui/Icons/IconEmpty.svelte";
-  import type { SlideDirectionType } from "$lib/constants";
+  import { PANEL_SETTINGS, type SlideDirectionType } from "$lib/constants";
+  import { downloadService, type DownloadItem } from "$services/downloadService";
+  import { konvaAllStagesState } from "$states/konvaAllStages.svelte";
+  import { konvaStageState } from "$states/konvaStage.svelte";
   import { textsState } from "$states/texts.svelte";
+  import { fly } from "svelte/transition";
   import Preview from "./Preview.svelte";
+  import PreviewAll from "./PreviewAll.svelte";
   import PreviewControls from "./PreviewControls.svelte";
 
   let current: number = $state(0);
   let direction: SlideDirectionType = $state("next");
 
+  let xDirection = $derived(direction == "next" ? PANEL_SETTINGS.PANEL_WIDTH : -PANEL_SETTINGS.PANEL_WIDTH);
+
   $effect(() => {
-    $inspect(current, textsState.texts);
     if (textsState.texts.length === 0) {
       current = 0;
     } else {
@@ -22,6 +28,22 @@
       }
     }
   });
+
+  function downloadAll() {
+    let downloadItems: Array<DownloadItem> = textsState.texts.map((text, idx) => ({
+      filename: text.text,
+      stage: konvaAllStagesState[idx]?.node,
+    }));
+
+    downloadService.downloadAll(downloadItems);
+  }
+
+  function downloadCurrent() {
+    let node = konvaStageState.stage?.node;
+    if (node) {
+      downloadService.downloadPanel(node, textsState.texts[current].text);
+    }
+  }
 </script>
 
 {#snippet panelTitle()}
@@ -38,7 +60,13 @@
       {#if textsState.texts.length}
         {#key current}
           {@const text = textsState?.texts[current]?.text}
-          <Preview {text} {direction} />
+          <div
+            class="konva-wrapper"
+            in:fly={{ x: xDirection, duration: 300 }}
+            out:fly={{ x: -xDirection, duration: 300 }}
+          >
+            <Preview {text} bind:stage={konvaStageState.stage} />
+          </div>
         {/key}
       {:else}
         <div class="empty-state">
@@ -49,11 +77,12 @@
     </div>
 
     <div class="panel-actions">
-      <Button label="Скачать всё" icon={IconDownload} />
-      <Button label="Скачать" type="outline" icon={IconDownload} />
+      <Button label="Скачать всё" icon={IconDownload} onclick={downloadAll} />
+      <Button label="Скачать" type="outline" icon={IconDownload} onclick={downloadCurrent} />
     </div>
   </div>
 </Card>
+<PreviewAll />
 
 <style>
   .panel-viewer {
@@ -94,4 +123,15 @@
   .empty-state p {
     font-size: 14px;
   }
+
+  .konva-wrapper {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+  }
 </style>

src/lib/error.types.ts

@@ -0,0 +1,36 @@
+export class AppError extends Error {
+  constructor(
+    message: string,
+    public code: string,
+    public details?: unknown,
+  ) {
+    super(message);
+    this.name = "AppError";
+  }
+}
+
+export class ImageError extends AppError {
+  constructor(message: string) {
+    super(message, "IMAGE_ERROR");
+  }
+}
+
+export class TextError extends AppError {
+  constructor(message: string) {
+    super(message, "TEXT_ERROR");
+  }
+}
+
+export class CanvasError extends AppError {
+  constructor(message: string) {
+    super(message, "CANVAS_ERROR");
+  }
+}
+
+export class StorageError extends AppError {
+  constructor(message: string) {
+    super(message, "STORAGE_ERROR");
+  }
+}
+
+export type ErrorType = AppError | ImageError | TextError | CanvasError | StorageError;

src/lib/utils/errorUtils.ts

@@ -0,0 +1,26 @@
+import { AppError } from "$lib/error.types";
+
+export function formatError(error: unknown, defaultMessage: string = "Произошла ошибка"): string {
+  if (error instanceof AppError || error instanceof Error) {
+    return `${defaultMessage}: ${error.message}`;
+  }
+
+  if (typeof error === "string") {
+    return `${defaultMessage}: ${error}`;
+  }
+
+  return `${defaultMessage}: Произошла неизвестная ошибка`;
+}
+
+export function createError(message: string, code: string, recoverable: boolean = true, details?: unknown): AppError {
+  return new AppError(message, code, recoverable);
+}
+
+export function logError(error: unknown, context?: string): void {
+  console.error("Error occurred:", {
+    error,
+    context,
+    timestamp: new Date().toISOString(),
+    stack: error instanceof Error ? error.stack : undefined,
+  });
+}

src/services/downloadService.ts

@@ -0,0 +1,83 @@
+import { ImageError } from "$lib/error.types";
+import { formatError, logError } from "$lib/utils/errorUtils";
+import { saveAs } from "file-saver";
+import JSZip from "jszip";
+import { Stage } from "konva/lib/Stage";
+
+export type DownloadResult =
+  | {
+      success: true;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+
+export interface DownloadItem {
+  filename: string;
+  stage: Stage;
+}
+
+export class DownloadService {
+  async downloadPanel(konvaStage: Stage, label: string): Promise<DownloadResult> {
+    try {
+      const blob = await this.stageToBlob(konvaStage);
+
+      const filename = `${label}.png`;
+      saveAs(blob, filename);
+
+      return {
+        success: true,
+      };
+    } catch (error) {
+      logError(error, "Ошибка сохранения панели");
+      return {
+        success: false,
+        error: formatError(error, "Ошибка сохранения панели"),
+      };
+    }
+  }
+
+  async downloadAll(panels: Array<DownloadItem>): Promise<DownloadResult> {
+    try {
+      const zip = new JSZip();
+      for (let panel of panels) {
+        const blob = await this.stageToBlob(panel.stage);
+        zip.file(`${panel.filename}.png`, blob);
+      }
+
+      const zipBlob = await zip.generateAsync({ type: "blob" });
+      saveAs(zipBlob, "panels.zip");
+
+      return {
+        success: true,
+      };
+    } catch (error) {
+      logError(error, "Ошибка сохранения архива");
+      return {
+        success: false,
+        error: formatError(error, "Ошибка сохранения архива"),
+      };
+    }
+  }
+
+  private async stageToBlob(konvaStage: Stage): Promise<Blob> {
+    if (!konvaStage || typeof konvaStage.toBlob !== "function") {
+      throw new ImageError("Konva Stage не найден или не поддерживает toBlob");
+    }
+
+    return new Promise((resolve, reject) => {
+      konvaStage.toBlob({
+        callback: (blob: Blob | null) => {
+          if (blob) {
+            resolve(blob);
+          } else {
+            reject(new ImageError("Не удалось создать изображение из Konva Stage"));
+          }
+        },
+      });
+    });
+  }
+}
+
+export const downloadService = new DownloadService();

src/states/konvaAllStages.svelte.ts

@@ -0,0 +1,3 @@
+import type { Stage } from "svelte-konva";
+
+export const konvaAllStagesState: Array<Stage> = $state([]);

src/states/konvaStage.svelte.ts

@@ -0,0 +1,16 @@
+import type { Stage } from "svelte-konva";
+
+function createState() {
+  let stage: Stage | undefined = $state(undefined);
+
+  return {
+    get stage(): Stage | undefined {
+      return stage;
+    },
+    set stage(newStage: Stage) {
+      stage = newStage;
+    },
+  };
+}
+
+export const konvaStageState = createState();