Merge branch 'feature/plus-button-timeline' into staging

1 files changed, 117 insertions, 0 deletions

diff --git a/apps/web/src/lib/timeline-utils.ts b/apps/web/src/lib/timeline-utils.ts
new file mode 100644
index 00000000..994cb314
--- /dev/null
+++ b/apps/web/src/lib/timeline-utils.ts
@@ -0,0 +1,117 @@
+import { useTimelineStore } from "@/stores/timeline-store";
+import { type MediaItem } from "@/stores/media-store";
+import { toast } from "sonner";
+import { TIMELINE_CONSTANTS } from "@/constants/timeline-constants";
+import { DragData, TextElement } from "@/types/timeline";
+
+
+const findOrCreateTrack = (trackType: "media" | "audio" | "text") => {
+  const timelineStore = useTimelineStore.getState();
+  
+  // Always create new text track to allow multiple text elements
+  if (trackType === "text") {
+    return timelineStore.addTrack(trackType);
+  }
+  
+  const existingTrack = timelineStore.tracks.find(track => track.type === trackType);
+  return existingTrack ? existingTrack.id : timelineStore.addTrack(trackType);
+};
+
+
+const checkOverlap = (trackId: string, startTime: number, duration: number, excludeElementId?: string) => {
+  const timelineStore = useTimelineStore.getState();
+  const targetTrack = timelineStore.tracks.find(track => track.id === trackId);
+  
+  if (!targetTrack) {
+    return true; 
+  }
+
+  const elementEnd = startTime + duration;
+
+  return targetTrack.elements.some((existingElement) => {
+    if (excludeElementId && existingElement.id === excludeElementId) {
+      return false;
+    }
+    
+    const existingStart = existingElement.startTime;
+    const existingEnd = existingElement.startTime + 
+      (existingElement.duration - existingElement.trimStart - existingElement.trimEnd);
+
+    return startTime < existingEnd && elementEnd > existingStart;
+  });
+};
+
+const addMediaElement = (trackId: string, item: MediaItem, startTime: number) => {
+  const timelineStore = useTimelineStore.getState();
+  
+  timelineStore.addElementToTrack(trackId, {
+    type: "media",
+    mediaId: item.id,
+    name: item.name,
+    duration: item.duration || TIMELINE_CONSTANTS.DEFAULT_IMAGE_DURATION,
+    startTime,
+    trimStart: 0,
+    trimEnd: 0,
+  });
+};
+
+const addTextElement = (trackId: string, item: TextElement | DragData, startTime: number) => {
+  const timelineStore = useTimelineStore.getState();
+  
+  timelineStore.addElementToTrack(trackId, {
+    type: "text",
+    name: item.name,
+    content: ("content" in item ? item.content : "Default Text"),
+    duration: TIMELINE_CONSTANTS.DEFAULT_TEXT_DURATION,
+    startTime,
+    trimStart: ("trimStart" in item ? item.trimStart : 0),
+    trimEnd: ("trimEnd" in item ? item.trimEnd : 0),
+    fontSize: ("fontSize" in item ? item.fontSize : 48),
+    fontFamily: ("fontFamily" in item ? item.fontFamily : "Arial"),
+    color: ("color" in item ? item.color : "#ffffff"),
+    backgroundColor: ("backgroundColor" in item ? item.backgroundColor : "transparent"),
+    textAlign: ("textAlign" in item ? item.textAlign : "center"),
+    fontWeight: ("fontWeight" in item ? item.fontWeight : "normal"),
+    fontStyle: ("fontStyle" in item ? item.fontStyle : "normal"),
+    textDecoration: ("textDecoration" in item ? item.textDecoration : "none"),
+    x: ("x" in item ? item.x : 0),
+    y: ("y" in item ? item.y : 0),
+    rotation: ("rotation" in item ? item.rotation : 0),
+    opacity: ("opacity" in item && item.opacity !== undefined ? item.opacity : 1),
+  });
+};
+
+
+// Adds a media item to the timeline at the specified time
+export const addMediaToTimeline = (item: MediaItem, currentTime: number = 0) => {
+  const trackType = item.type === "audio" ? "audio" : "media";
+  const targetTrackId = findOrCreateTrack(trackType);
+  
+  const duration = item.duration || TIMELINE_CONSTANTS.DEFAULT_IMAGE_DURATION;
+  
+  if (checkOverlap(targetTrackId, currentTime, duration)) {
+    toast.error("Cannot place element here - it would overlap with existing elements");
+    return;
+  }
+
+  addMediaElement(targetTrackId, item, currentTime);
+};
+
+// Adds a text item to the timeline at the specified time
+export const addTextToTimeline = (item: TextElement, currentTime: number = 0) => {
+  const targetTrackId = findOrCreateTrack("text");
+  addTextElement(targetTrackId, item, currentTime);
+};
+
+// Adds a media item to timeline
+export const addMediaToNewTrack = (item: MediaItem) => {
+  const trackType = item.type === "audio" ? "audio" : "media";
+  const targetTrackId = findOrCreateTrack(trackType);
+  addMediaElement(targetTrackId, item, 0);
+};
+
+// Adds a text item to timeline
+export const addTextToNewTrack = (item: TextElement | DragData) => {
+  const targetTrackId = findOrCreateTrack("text");
+  addTextElement(targetTrackId, item, 0);
+};