From 538d6830a0022b49b99695095d85e567b0c86e71 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 30 Jul 2023 23:47:53 +0800
Subject: ...

---
 FrontEnd/src/pages/timeline/TimelinePostEdit.tsx | 267 +++++++++++++++++++++++
 1 file changed, 267 insertions(+)
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostEdit.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostEdit.tsx')

diff --git a/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
new file mode 100644
index 00000000..c1fa0dd9
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
@@ -0,0 +1,267 @@
+import * as React from "react";
+import { useTranslation } from "react-i18next";
+
+import { UiLogicError } from "@/common";
+
+import {
+  getHttpTimelineClient,
+  HttpTimelineInfo,
+  HttpTimelinePostInfo,
+  HttpTimelinePostPostRequestData,
+} from "@/http/timeline";
+
+import { pushAlert } from "@/services/alert";
+
+import base64 from "@/utilities/base64";
+
+import BlobImage from "@/views/common/BlobImage";
+import LoadingButton from "@/views/common/button/LoadingButton";
+import PopupMenu from "@/views/common/menu/PopupMenu";
+import MarkdownPostEdit from "./MarkdownPostEdit";
+import TimelinePostEditCard from "./TimelinePostEditCard";
+import IconButton from "@/views/common/button/IconButton";
+
+import "./TimelinePostEdit.css";
+
+interface TimelinePostEditTextProps {
+  text: string;
+  disabled: boolean;
+  onChange: (text: string) => void;
+  className?: string;
+  style?: React.CSSProperties;
+}
+
+const TimelinePostEditText: React.FC<TimelinePostEditTextProps> = (props) => {
+  const { text, disabled, onChange, className, style } = props;
+
+  return (
+    <textarea
+      value={text}
+      disabled={disabled}
+      onChange={(event) => {
+        onChange(event.target.value);
+      }}
+      className={className}
+      style={style}
+    />
+  );
+};
+
+interface TimelinePostEditImageProps {
+  onSelect: (file: File | null) => void;
+  disabled: boolean;
+}
+
+const TimelinePostEditImage: React.FC<TimelinePostEditImageProps> = (props) => {
+  const { onSelect, disabled } = props;
+
+  const { t } = useTranslation();
+
+  const [file, setFile] = React.useState<File | null>(null);
+  const [error, setError] = React.useState<boolean>(false);
+
+  const onInputChange: React.ChangeEventHandler<HTMLInputElement> = (e) => {
+    setError(false);
+    const files = e.target.files;
+    if (files == null || files.length === 0) {
+      setFile(null);
+      onSelect(null);
+    } else {
+      setFile(files[0]);
+    }
+  };
+
+  React.useEffect(() => {
+    return () => {
+      onSelect(null);
+    };
+  }, [onSelect]);
+
+  return (
+    <>
+      <input
+        type="file"
+        onChange={onInputChange}
+        accept="image/*"
+        disabled={disabled}
+        className="mx-3 my-1"
+      />
+      {file != null && !error && (
+        <BlobImage
+          blob={file}
+          className="timeline-post-edit-image"
+          onLoad={() => onSelect(file)}
+          onError={() => {
+            onSelect(null);
+            setError(true);
+          }}
+        />
+      )}
+      {error ? <div className="text-danger">{t("loadImageError")}</div> : null}
+    </>
+  );
+};
+
+type PostKind = "text" | "markdown" | "image";
+
+const postKindIconMap: Record<PostKind, string> = {
+  text: "fonts",
+  markdown: "markdown",
+  image: "image",
+};
+
+export interface TimelinePostEditProps {
+  className?: string;
+  style?: React.CSSProperties;
+  timeline: HttpTimelineInfo;
+  onPosted: (newPost: HttpTimelinePostInfo) => void;
+}
+
+const TimelinePostEdit: React.FC<TimelinePostEditProps> = (props) => {
+  const { timeline, style, className, onPosted } = props;
+
+  const { t } = useTranslation();
+
+  const [process, setProcess] = React.useState<boolean>(false);
+
+  const [kind, setKind] = React.useState<Exclude<PostKind, "markdown">>("text");
+  const [showMarkdown, setShowMarkdown] = React.useState<boolean>(false);
+
+  const [text, setText] = React.useState<string>("");
+  const [image, setImage] = React.useState<File | null>(null);
+
+  const draftTextLocalStorageKey = `timeline.${timeline.owner.username}.${timeline.nameV2}.postDraft.text`;
+
+  React.useEffect(() => {
+    setText(window.localStorage.getItem(draftTextLocalStorageKey) ?? "");
+  }, [draftTextLocalStorageKey]);
+
+  const canSend =
+    (kind === "text" && text.length !== 0) ||
+    (kind === "image" && image != null);
+
+  const onPostError = (): void => {
+    pushAlert({
+      type: "danger",
+      message: "timeline.sendPostFailed",
+    });
+  };
+
+  const onSend = async (): Promise<void> => {
+    setProcess(true);
+
+    let requestData: HttpTimelinePostPostRequestData;
+    switch (kind) {
+      case "text":
+        requestData = {
+          contentType: "text/plain",
+          data: await base64(text),
+        };
+        break;
+      case "image":
+        if (image == null) {
+          throw new UiLogicError(
+            "Content type is image but image blob is null.",
+          );
+        }
+        requestData = {
+          contentType: image.type,
+          data: await base64(image),
+        };
+        break;
+      default:
+        throw new UiLogicError("Unknown content type.");
+    }
+
+    getHttpTimelineClient()
+      .postPost(timeline.owner.username, timeline.nameV2, {
+        dataList: [requestData],
+      })
+      .then(
+        (data) => {
+          if (kind === "text") {
+            setText("");
+            window.localStorage.removeItem(draftTextLocalStorageKey);
+          }
+          setProcess(false);
+          setKind("text");
+          onPosted(data);
+        },
+        () => {
+          setProcess(false);
+          onPostError();
+        },
+      );
+  };
+
+  return (
+    <TimelinePostEditCard className={className} style={style}>
+      {showMarkdown ? (
+        <MarkdownPostEdit
+          className="cru-fill-parent"
+          onClose={() => setShowMarkdown(false)}
+          owner={timeline.owner.username}
+          timeline={timeline.nameV2}
+          onPosted={onPosted}
+          onPostError={onPostError}
+        />
+      ) : (
+        <div className="row">
+          <div className="col px-1 py-1">
+            {(() => {
+              if (kind === "text") {
+                return (
+                  <TimelinePostEditText
+                    className="cru-fill-parent timeline-post-edit"
+                    text={text}
+                    disabled={process}
+                    onChange={(t) => {
+                      setText(t);
+                      window.localStorage.setItem(draftTextLocalStorageKey, t);
+                    }}
+                  />
+                );
+              } else if (kind === "image") {
+                return (
+                  <TimelinePostEditImage
+                    onSelect={setImage}
+                    disabled={process}
+                  />
+                );
+              }
+            })()}
+          </div>
+          <div className="col col-auto align-self-end m-1">
+            <div className="d-block cru-text-center mt-1 mb-2">
+              <PopupMenu
+                items={(["text", "image", "markdown"] as const).map((kind) => ({
+                  type: "button",
+                  text: `timeline.post.type.${kind}`,
+                  iconClassName: postKindIconMap[kind],
+                  onClick: () => {
+                    if (kind === "markdown") {
+                      setShowMarkdown(true);
+                    } else {
+                      setKind(kind);
+                    }
+                  },
+                }))}
+              >
+                <IconButton large icon={postKindIconMap[kind]} />
+              </PopupMenu>
+            </div>
+            <LoadingButton
+              onClick={() => void onSend()}
+              disabled={!canSend}
+              loading={process}
+            >
+              {t("timeline.send")}
+            </LoadingButton>
+          </div>
+        </div>
+      )}
+    </TimelinePostEditCard>
+  );
+};
+
+export default TimelinePostEdit;
-- 
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