1 files changed, 193 insertions, 0 deletions
diff --git a/FrontEnd/src/pages/timeline/edit/TimelinePostCreateView.tsx b/FrontEnd/src/pages/timeline/edit/TimelinePostCreateView.tsx
new file mode 100644
index 00000000..c0a80ad0
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/edit/TimelinePostCreateView.tsx
@@ -0,0 +1,193 @@
+import { useState } from "react";
+import classNames from "classnames";
+
+import { UiLogicError } from "~src/common";
+
+import {
+  getHttpTimelineClient,
+  HttpTimelineInfo,
+  HttpTimelinePostInfo,
+  HttpTimelinePostPostRequestData,
+} from "~src/http/timeline";
+
+import base64 from "~src/utilities/base64";
+
+import { useC } from "~/src/components/common";
+import { pushAlert } from "~src/components/alert";
+import { IconButton, LoadingButton } from "~src/components/button";
+import PopupMenu from "~src/components/menu/PopupMenu";
+import { useWindowLeave } from "~src/components/hooks";
+
+import TimelinePostCard from "../TimelinePostCard";
+import TimelinePostContainer from "../TimelinePostContainer";
+import PlainTextPostEdit from "./PlainTextPostEdit";
+import ImagePostEdit from "./ImagePostEdit";
+import { MarkdownPostEdit, useMarkdownEdit } from "./MarkdownPostEdit";
+
+import "./TimelinePostCreateView.css";
+
+type PostKind = "text" | "markdown" | "image";
+
+const postKindIconMap: Record<PostKind, string> = {
+  text: "fonts",
+  markdown: "markdown",
+  image: "image",
+};
+
+export interface TimelinePostEditProps {
+  className?: string;
+  timeline: HttpTimelineInfo;
+  onPosted: (newPost: HttpTimelinePostInfo) => void;
+}
+
+function TimelinePostEdit(props: TimelinePostEditProps) {
+  const { timeline, className, onPosted } = props;
+
+  const c = useC();
+
+  const [process, setProcess] = useState<boolean>(false);
+
+  const [kind, setKind] = useState<PostKind>("text");
+
+  const draftTextLocalStorageKey = `timeline.${timeline.owner.username}.${timeline.nameV2}.postDraft.text`;
+  const [text, setText] = useState<string>(
+    () => window.localStorage.getItem(draftTextLocalStorageKey) ?? "",
+  );
+  const [image, setImage] = useState<File | null>(null);
+  const {
+    hasContent: mdHasContent,
+    build: mdBuild,
+    clear: mdClear,
+    markdownEditProps,
+  } = useMarkdownEdit(process);
+
+  useWindowLeave(!mdHasContent && !image);
+
+  const canSend =
+    (kind === "text" && text.length !== 0) ||
+    (kind === "image" && image != null) ||
+    (kind === "markdown" && mdHasContent);
+
+  const onPostError = (): void => {
+    pushAlert({
+      color: "danger",
+      message: "timeline.sendPostFailed",
+    });
+  };
+
+  const onSend = async (): Promise<void> => {
+    setProcess(true);
+
+    let requestDataList: HttpTimelinePostPostRequestData[];
+    switch (kind) {
+      case "text":
+        requestDataList = [
+          {
+            contentType: "text/plain",
+            data: await base64(text),
+          },
+        ];
+        break;
+      case "image":
+        if (image == null) {
+          throw new UiLogicError();
+        }
+        requestDataList = [
+          {
+            contentType: image.type,
+            data: await base64(image),
+          },
+        ];
+        break;
+      case "markdown":
+        if (!mdHasContent) {
+          throw new UiLogicError();
+        }
+        requestDataList = await mdBuild();
+        break;
+      default:
+        throw new UiLogicError("Unknown content type.");
+    }
+
+    try {
+      const res = await getHttpTimelineClient().postPost(
+        timeline.owner.username,
+        timeline.nameV2,
+        {
+          dataList: requestDataList,
+        },
+      );
+
+      if (kind === "text") {
+        setText("");
+        window.localStorage.removeItem(draftTextLocalStorageKey);
+      } else if (kind === "image") {
+        setImage(null);
+      } else if (kind === "markdown") {
+        mdClear();
+      }
+      onPosted(res);
+    } catch (e) {
+      onPostError();
+    } finally {
+      setProcess(false);
+    }
+  };
+
+  return (
+    <TimelinePostContainer
+      className={classNames(className, "timeline-post-create-container")}
+    >
+      <TimelinePostCard className="timeline-post-create-card">
+        <div className="timeline-post-create">
+          <div className="timeline-post-create-edit-area">
+            {kind === "text" && (
+              <PlainTextPostEdit
+                text={text}
+                disabled={process}
+                onChange={(text) => {
+                  setText(text);
+                  window.localStorage.setItem(draftTextLocalStorageKey, text);
+                }}
+              />
+            )}
+            {kind === "image" && (
+              <ImagePostEdit
+                file={image}
+                onChange={setImage}
+                disabled={process}
+              />
+            )}
+            {kind === "markdown" && <MarkdownPostEdit {...markdownEditProps} />}
+          </div>
+          <div className="timeline-post-create-right-area">
+            <PopupMenu
+              containerClassName="timeline-post-create-kind-select"
+              items={(["text", "image", "markdown"] as const).map((kind) => ({
+                type: "button",
+                text: `timeline.post.type.${kind}`,
+                iconClassName: postKindIconMap[kind],
+                onClick: () => {
+                  setKind(kind);
+                },
+              }))}
+            >
+              <IconButton color="primary" icon={postKindIconMap[kind]} />
+            </PopupMenu>
+            <LoadingButton
+              className="timeline-post-create-send"
+              onClick={() => void onSend()}
+              color="primary"
+              disabled={!canSend}
+              loading={process}
+            >
+              {c("timeline.send")}
+            </LoadingButton>
+          </div>
+        </div>
+      </TimelinePostCard>
+    </TimelinePostContainer>
+  );
+}
+
+export default TimelinePostEdit;