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import type { MigrationResult, ProjectRecord } from "./types";
import { getProjectId, isRecord } from "./utils";
export function transformProjectV13ToV14({
project,
}: {
project: ProjectRecord;
}): MigrationResult<ProjectRecord> {
if (!getProjectId({ project })) {
return { project, skipped: true, reason: "no project id" };
}
if (typeof project.version === "number" && project.version >= 14) {
return { project, skipped: true, reason: "already v14" };
}
const migratedProject = migrateProjectSplitMasks({ project });
return {
project: { ...migratedProject, version: 14 },
skipped: false,
};
}
function migrateProjectSplitMasks({
project,
}: {
project: ProjectRecord;
}): ProjectRecord {
const scenesValue = project.scenes;
if (!Array.isArray(scenesValue)) return project;
const migratedScenes = scenesValue.map((scene) =>
migrateSceneSplitMasks({ scene }),
);
return { ...project, scenes: migratedScenes };
}
function migrateSceneSplitMasks({ scene }: { scene: unknown }): unknown {
if (!isRecord(scene)) return scene;
const tracksValue = scene.tracks;
if (!Array.isArray(tracksValue)) return scene;
const migratedTracks = tracksValue.map((track) =>
migrateTrackSplitMasks({ track }),
);
return { ...scene, tracks: migratedTracks };
}
function migrateTrackSplitMasks({ track }: { track: unknown }): unknown {
if (!isRecord(track)) return track;
const elementsValue = track.elements;
if (!Array.isArray(elementsValue)) return track;
const migratedElements = elementsValue.map((element) =>
migrateElementSplitMasks({ element }),
);
return { ...track, elements: migratedElements };
}
function migrateElementSplitMasks({ element }: { element: unknown }): unknown {
if (!isRecord(element)) return element;
const masksValue = element.masks;
if (!Array.isArray(masksValue)) return element;
const migratedMasks = masksValue.map((mask) => migrateSplitMask({ mask }));
return { ...element, masks: migratedMasks };
}
/**
* Converts split mask params from position-along-normal to explicit (x, y) anchor.
*
* Old: center = (cx + (position-0.5)*W*cos(rot), cy + (position-0.5)*W*sin(rot))
* New: center = (cx + x*W, cy + y*W)
*
* Conversion: x = (position-0.5)*cos(rot), y = (position-0.5)*sin(rot)
*/
function migrateSplitMask({ mask }: { mask: unknown }): unknown {
if (!isRecord(mask)) return mask;
if (mask.type !== "split") return mask;
const params = isRecord(mask.params) ? mask.params : {};
const position = typeof params.position === "number" ? params.position : 0.5;
const rotation = typeof params.rotation === "number" ? params.rotation : 0;
const angleRad = (rotation * Math.PI) / 180;
const x = (position - 0.5) * Math.cos(angleRad);
const y = (position - 0.5) * Math.sin(angleRad);
const { position: _removed, ...restParams } = params as Record<
string,
unknown
> & { position: unknown };
return {
...mask,
params: { ...restParams, x, y },
};
}
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