All files / src/app/teacher-page/components/class-list ClassPhotoDialog.jsx

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100% Functions 13/13
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import * as React from "react";
import { useRef, useState } from "react";
import { useDispatch } from "react-redux";
import { useSnackbar } from "notistack";
import Button from "@mui/material/Button";
import Dialog from "@mui/material/Dialog";
import DialogActions from "@mui/material/DialogActions";
import DialogContent from "@mui/material/DialogContent";
import DialogTitle from "@mui/material/DialogTitle";
import { Alert, Box, IconButton, Typography } from "@mui/material";
import CloseIcon from "@mui/icons-material/Close";
import { _addClassPhoto, _updateClassPhoto, _deleteClassPhoto } from "@/store/slices/teacher/TeacherClasses";
 
// Upload/replace/remove dialog for a class's cover photo. Shared by the
// class-list cards (ClassCards.jsx) and the class-details page
// (ClassDetails.jsx). Mirrors the teacher account ChangePhoto.jsx flow —
// same hidden-input + FileReader preview + FormData upload pattern — scoped
// to a single class.
//
// The `_addClassPhoto`/`_updateClassPhoto`/`_deleteClassPhoto` thunks already
// patch the class-list Redux slice (TeacherClasses.classData) in place, but
// the class-details page reads from a separate slice (TeacherSpecificClass).
// `onPhotoUpdated(newClassPhotoUrl)` lets each caller sync whatever local
// state/slice it owns after a successful mutation.
export default function ClassPhotoDialog({ open, onClose, classUUID, currentPhotoUrl, onPhotoUpdated }) {
    const dispatch = useDispatch();
    const { enqueueSnackbar, closeSnackbar } = useSnackbar();
 
    const inputRef = useRef(null);
    const [preview, setPreview] = useState(""); // local FileReader preview
    const [selectedFile, setSelectedFile] = useState(null);
    const [isSaving, setIsSaving] = useState(false);
 
    const browseImage = () => inputRef.current.click();
 
    const handleFileChange = (event) => {
        const file = event.target.files[0];
        if (!file) return;
        const reader = new FileReader();
        reader.onloadend = () => setPreview(reader.result);
        setSelectedFile(file);
        reader.readAsDataURL(file);
    };
 
    const snackbarAction = (key) => (
        <IconButton size="small" color="inherit" onClick={() => closeSnackbar(key)}>
            <CloseIcon fontSize="small" />
        </IconButton>
    );
 
    const resetAndClose = () => {
        setPreview("");
        setSelectedFile(null);
        onClose();
    };
 
    const handleSave = () => {
        Iif (!selectedFile) return;
        const formData = new FormData();
        formData.append("file", selectedFile);
        const action = currentPhotoUrl ? _updateClassPhoto : _addClassPhoto;
 
        setIsSaving(true);
        dispatch(action({ classUUID, formData }))
            .then((response) => {
                if (!response.error) {
                    onPhotoUpdated?.(response.payload?.response?.data?.updated_class?.class_photo ?? null);
                    resetAndClose();
                    enqueueSnackbar(
                        currentPhotoUrl ? "Class photo successfully updated" : "Class photo successfully added",
                        { variant: "success", action: snackbarAction }
                    );
                } else {
                    enqueueSnackbar("Invalid image upload", { variant: "error", action: snackbarAction });
                }
            })
            .finally(() => setIsSaving(false));
    };
 
    const handleDelete = () => {
        setIsSaving(true);
        dispatch(_deleteClassPhoto(classUUID))
            .then((response) => {
                if (!response.error) {
                    onPhotoUpdated?.(null);
                    resetAndClose();
                    enqueueSnackbar("Class photo successfully deleted", {
                        variant: "success",
                        action: snackbarAction,
                    });
                } else {
                    enqueueSnackbar("Failed to delete class photo", { variant: "error", action: snackbarAction });
                }
            })
            .finally(() => setIsSaving(false));
    };
 
    const displayedPhoto = preview || currentPhotoUrl;
 
    return (
        <React.Fragment>
            <input ref={inputRef} type="file" accept="image/*" hidden onChange={handleFileChange} />
            <Dialog open={open} onClose={resetAndClose} fullWidth aria-labelledby="class-photo-dialog-title">
                <DialogTitle
                    id="class-photo-dialog-title"
                    sx={{ display: "flex", justifyContent: "space-between", alignItems: "center" }}
                >
                    <Typography variant="body1">Class Cover Photo</Typography>
                </DialogTitle>
                <DialogContent dividers>
                    <Alert severity="info" sx={{ mb: 2 }}>
                        JPG or PNG, up to 10MB. The image is resized automatically.
                    </Alert>
                    <Box
                        sx={{
                            display: "flex",
                            justifyContent: "center",
                            alignItems: "center",
                            height: 160,
                            borderRadius: 2,
                            overflow: "hidden",
                            bgcolor: "action.hover",
                        }}
                    >
                        {displayedPhoto ? (
                            <Box
                                component="img"
                                src={displayedPhoto}
                                alt="Class cover"
                                sx={{ width: "100%", height: "100%", objectFit: "cover" }}
                            />
                        ) : (
                            <Typography variant="body2" color="text.secondary">
                                No cover photo yet
                            </Typography>
                        )}
                    </Box>
                </DialogContent>
                <DialogActions sx={{ display: "flex", justifyContent: "space-between" }}>
                    <Button sx={{ width: "150px" }} variant="inherit" onClick={resetAndClose} disabled={isSaving}>
                        Cancel
                    </Button>
                    <Box sx={{ display: "flex", gap: 1 }}>
                        {currentPhotoUrl && !selectedFile && (
                            <Button variant="outlined" color="error" onClick={handleDelete} disabled={isSaving}>
                                Delete
                            </Button>
                        )}
                        <Button variant="outlined" color="primary" onClick={browseImage} disabled={isSaving}>
                            {selectedFile ? "Change" : "Browse"}
                        </Button>
                        <Button
                            variant="contained"
                            color="primary"
                            onClick={handleSave}
                            disabled={!selectedFile || isSaving}
                        >
                            Save
                        </Button>
                    </Box>
                </DialogActions>
            </Dialog>
        </React.Fragment>
    );
}