1 files changed, 189 insertions, 0 deletions
diff --git a/apps/web/src/services/storage/migrations/transformers/v3-to-v4.ts b/apps/web/src/services/storage/migrations/transformers/v3-to-v4.ts
new file mode 100644
index 00000000..d6e1efee
--- /dev/null
+++ b/apps/web/src/services/storage/migrations/transformers/v3-to-v4.ts
@@ -0,0 +1,189 @@
+import type { MigrationResult, ProjectRecord } from "./types";
+import { getProjectId, isRecord } from "./utils";
+
+const LEGACY_FONT_WEIGHT_MAP = {
+	normal: "400",
+	bold: "700",
+} as const;
+
+const VALID_NUMERIC_FONT_WEIGHTS = new Set([
+	"100",
+	"200",
+	"300",
+	"400",
+	"500",
+	"600",
+	"700",
+	"800",
+	"900",
+]);
+
+export function transformProjectV3ToV4({
+	project,
+}: {
+	project: ProjectRecord;
+}): MigrationResult<ProjectRecord> {
+	const projectId = getProjectId({ project });
+	if (!projectId) {
+		return { project, skipped: true, reason: "no project id" };
+	}
+
+	if (isV4Project({ project })) {
+		return { project, skipped: true, reason: "already v4" };
+	}
+
+	const migratedProject = normalizeProjectTextFontWeights({ project });
+
+	return {
+		project: {
+			...migratedProject,
+			version: 4,
+		},
+		skipped: false,
+	};
+}
+
+function normalizeProjectTextFontWeights({
+	project,
+}: {
+	project: ProjectRecord;
+}): ProjectRecord {
+	const scenesValue = project.scenes;
+	if (!Array.isArray(scenesValue)) {
+		return project;
+	}
+
+	let hasSceneChanges = false;
+	const normalizedScenes = scenesValue.map((scene) => {
+		const normalizedScene = normalizeSceneTextFontWeights({ scene });
+		if (normalizedScene !== scene) {
+			hasSceneChanges = true;
+		}
+		return normalizedScene;
+	});
+
+	if (!hasSceneChanges) {
+		return project;
+	}
+
+	return {
+		...project,
+		scenes: normalizedScenes,
+	};
+}
+
+function normalizeSceneTextFontWeights({ scene }: { scene: unknown }): unknown {
+	if (!isRecord(scene)) {
+		return scene;
+	}
+
+	const tracksValue = scene.tracks;
+	if (!Array.isArray(tracksValue)) {
+		return scene;
+	}
+
+	let hasTrackChanges = false;
+	const normalizedTracks = tracksValue.map((track) => {
+		const normalizedTrack = normalizeTrackTextFontWeights({ track });
+		if (normalizedTrack !== track) {
+			hasTrackChanges = true;
+		}
+		return normalizedTrack;
+	});
+
+	if (!hasTrackChanges) {
+		return scene;
+	}
+
+	return {
+		...scene,
+		tracks: normalizedTracks,
+	};
+}
+
+function normalizeTrackTextFontWeights({ track }: { track: unknown }): unknown {
+	if (!isRecord(track)) {
+		return track;
+	}
+
+	if (track.type !== "text") {
+		return track;
+	}
+
+	const elementsValue = track.elements;
+	if (!Array.isArray(elementsValue)) {
+		return track;
+	}
+
+	let hasElementChanges = false;
+	const normalizedElements = elementsValue.map((element) => {
+		const normalizedElement = normalizeTextElementFontWeight({ element });
+		if (normalizedElement !== element) {
+			hasElementChanges = true;
+		}
+		return normalizedElement;
+	});
+
+	if (!hasElementChanges) {
+		return track;
+	}
+
+	return {
+		...track,
+		elements: normalizedElements,
+	};
+}
+
+function normalizeTextElementFontWeight({
+	element,
+}: {
+	element: unknown;
+}): unknown {
+	if (!isRecord(element) || element.type !== "text") {
+		return element;
+	}
+
+	const normalizedWeight = normalizeFontWeight({ value: element.fontWeight });
+	if (normalizedWeight === element.fontWeight) {
+		return element;
+	}
+
+	return {
+		...element,
+		fontWeight: normalizedWeight,
+	};
+}
+
+function normalizeFontWeight({ value }: { value: unknown }): unknown {
+	if (typeof value === "number") {
+		const numericWeight = String(value);
+		if (VALID_NUMERIC_FONT_WEIGHTS.has(numericWeight)) {
+			return numericWeight;
+		}
+		return value;
+	}
+
+	if (typeof value !== "string") {
+		return value;
+	}
+
+	const normalized = value.trim().toLowerCase();
+	if (normalized in LEGACY_FONT_WEIGHT_MAP) {
+		return LEGACY_FONT_WEIGHT_MAP[
+			normalized as keyof typeof LEGACY_FONT_WEIGHT_MAP
+		];
+	}
+
+	if (VALID_NUMERIC_FONT_WEIGHTS.has(normalized)) {
+		return normalized;
+	}
+
+	return value;
+}
+
+export { getProjectId } from "./utils";
+
+function isV4Project({ project }: { project: ProjectRecord }): boolean {
+	const versionValue = project.version;
+	return typeof versionValue === "number" && versionValue >= 4;
+}