feat(*): 创作工作台 - 完善画布生成、模型定价与创建流程

web/src/lib/image-pricing.ts

@@ -0,0 +1,38 @@
+import { buildImageResolutionOptions } from "./image-resolution-tiers";
+import { isImageResolutionTier } from "./image-quality";
+import type { ImageCapabilityConfig } from "./model-capabilities";
+
+/** 旧图片价格档把 1K/2K/4K 存在 quality；只在读取价格条件时转换。 */
+export function normalizeImagePriceSelector(input: Record<string, string>) {
+    const selector = { ...input };
+    for (const key of ["quality", "resolution", "size"] as const) {
+        if (selector[key]) selector[key] = selector[key].trim().toLowerCase();
+    }
+    if (isImageResolutionTier(selector.quality) && (!selector.resolution || selector.resolution === "*")) {
+        selector.resolution = selector.quality;
+        delete selector.quality;
+    }
+    return selector;
+}
+
+export function imagePriceSelector(quality: string, size: string, profile?: ImageCapabilityConfig): Record<string, string> {
+    quality = quality.trim().toLowerCase();
+    size = size.trim().toLowerCase();
+    const selector: Record<string, string> = {};
+    if (quality && quality !== "auto" && quality !== "any") selector.quality = quality;
+    if (size && size !== "auto" && size !== "any") selector.size = size;
+    const pixel = buildImageResolutionOptions([size])[0];
+    if (pixel) {
+        selector.resolution = profile?.size.presets?.find((preset) => preset.size.toLowerCase() === size)?.tier || pixel.tier;
+    } else if (isImageResolutionTier(quality)) {
+        selector.resolution = quality;
+    } else if (profile?.size.parameter === "aspect_ratio") {
+        const tier = ({ low: "1k", medium: "2k", high: "4k" } as Record<string, string>)[quality];
+        if (tier && profile.quality.supported) selector.resolution = tier;
+        else if (!profile.quality.supported) {
+            const tiers = new Set(profile.size.presets?.filter((preset) => preset.ratio === size).map((preset) => preset.tier));
+            if (tiers.size === 1) selector.resolution = [...tiers][0];
+        }
+    }
+    return selector;
+}