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import type { MigrationResult, ProjectRecord } from "./types";
import { getProjectId, isRecord } from "./utils";
export function transformProjectV25ToV26({
project,
}: {
project: ProjectRecord;
}): MigrationResult<ProjectRecord> {
if (!getProjectId({ project })) {
return { project, skipped: true, reason: "no project id" };
}
const version = project.version;
if (typeof version !== "number") {
return { project, skipped: true, reason: "invalid version" };
}
if (version >= 26) {
return { project, skipped: true, reason: "already v26" };
}
if (version !== 25) {
return { project, skipped: true, reason: "not v25" };
}
return {
project: {
...migrateProject({ project }),
version: 26,
},
skipped: false,
};
}
function migrateProject({
project,
}: {
project: ProjectRecord;
}): ProjectRecord {
if (!Array.isArray(project.scenes)) {
return project;
}
return {
...project,
scenes: project.scenes.map((scene) => migrateScene({ scene })),
};
}
function migrateScene({ scene }: { scene: unknown }): unknown {
if (!isRecord(scene)) {
return scene;
}
const tracks = scene.tracks;
// Already in the correct shape — nothing to repair
if (isRecord(tracks) && Array.isArray(tracks.overlay) && Array.isArray(tracks.audio)) {
return scene;
}
// Reconstruct the flat track array from whatever broken state it's in.
// v24-to-v25 spread a flat array into a numeric-keyed object, so
// Object.values recovers the original elements. A true flat array is
// also handled for safety.
let trackArray: unknown[];
if (Array.isArray(tracks)) {
trackArray = tracks;
} else if (isRecord(tracks)) {
trackArray = Object.values(tracks);
} else {
trackArray = [];
}
const mainTrack = findMainTrack({ tracks: trackArray });
const finalMainTrack = mainTrack ?? buildEmptyMainTrack();
return {
...scene,
tracks: {
main: migrateTrack({ track: finalMainTrack }),
overlay: trackArray
.filter((track) => track !== mainTrack)
.map((track) => migrateTrack({ track }))
.filter(
(track): track is ProjectRecord =>
isRecord(track) && track.type !== "audio",
),
audio: trackArray
.map((track) => migrateTrack({ track }))
.filter(
(track): track is ProjectRecord =>
isRecord(track) && track.type === "audio",
),
},
};
}
function findMainTrack({
tracks,
}: {
tracks: unknown[];
}): ProjectRecord | null {
for (const track of tracks) {
if (!isRecord(track)) continue;
if (track.type === "video" && track.isMain === true) return track;
}
for (const track of tracks) {
if (!isRecord(track)) continue;
if (track.type === "video") return track;
}
return null;
}
function migrateTrack({ track }: { track: unknown }): unknown {
if (!isRecord(track)) return track;
const nextTrack = { ...track };
delete nextTrack.isMain;
return nextTrack;
}
function buildEmptyMainTrack(): ProjectRecord {
return {
id: crypto.randomUUID(),
name: "Main",
type: "video",
elements: [],
muted: false,
hidden: false,
};
}
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