add support for signature concept

Author: ShivangMishra

package.json

@@ -63,6 +63,7 @@
     "react-router-dom": "^7.7.0",
     "react-select": "^5.10.2",
     "react-show-more-text": "^1.5.2",
+    "react-signature-canvas": "^1.1.0-alpha.2",
     "react-simple-code-editor": "^0.14.1",
     "react-tagsinput": "^3.19.0",
     "redux": "^4.0.1",

src/dataEntryApp/components/FormElement.jsx

@@ -15,6 +15,7 @@ import LocationFormElement from "./LocationFormElement";
 import LandingSubjectFormElement from "./LandingSubjectFormElement";
 import QuestionGroupFormElement from "./QuestionGroupFormElement";
 import { RepeatableQuestionGroupElement } from "./RepeatableQuestionGroupElement";
+import SignatureFormElement from "./SignatureFormElement";
 
 const StyledContainer = styled("div")(({ isGrid }) => ({
   ...(isGrid && {
@@ -42,6 +43,7 @@ const elements = {
   Video: MediaFormElement,
   Audio: MediaFormElement,
   File: MediaFormElement,
+  Signature: SignatureFormElement,
   Id: TextFormElement,
   PhoneNumber: PhoneNumberFormElement,
   Subject: LandingSubjectFormElement,

src/dataEntryApp/components/Observations.jsx

@@ -343,6 +343,19 @@ const Observations = ({
         }}
       />
     ),
+    [Concept.dataType.Signature]: (
+      <img
+        src={signedMediaUrl}
+        alt={MediaData.MissingSignedMediaMessage}
+        align="center"
+        width={200}
+        height={200}
+        onClick={event => {
+          event.preventDefault();
+          showMediaOverlay(signedMediaUrl);
+        }}
+      />
+    ),
     [Concept.dataType.Video]: (
       <video
         preload="auto"
@@ -451,6 +464,7 @@ const Observations = ({
       case Concept.dataType.Audio:
         return <AudioPlayer url={unsignedMediaUrl} />;
       case Concept.dataType.Image:
+      case Concept.dataType.Signature:
       case Concept.dataType.Video:
         return imageVideoOptions(unsignedMediaUrl, concept);
       case Concept.dataType.File:

src/dataEntryApp/components/SignatureFormElement.jsx

@@ -0,0 +1,181 @@
+import { useRef, useEffect, useState } from "react";
+import { useTranslation } from "react-i18next";
+import { Box, Button, Paper, Typography } from "@mui/material";
+import { styled } from "@mui/material/styles";
+import { ValidationError } from "./ValidationError";
+import { httpClient as http } from "../../common/utils/httpClient";
+import { find, get } from "lodash";
+// eslint-disable-next-line import/no-named-as-default
+import SignatureCanvas from "react-signature-canvas";
+
+const SignatureContainer = styled(Box)(({ theme }) => ({
+  display: "flex",
+  flexDirection: "column",
+  gap: theme.spacing(2)
+}));
+
+const ButtonContainer = styled(Box)(({ theme }) => ({
+  display: "flex",
+  gap: theme.spacing(1)
+}));
+
+const SignatureImage = styled("img")(({ theme }) => ({
+  maxWidth: "100%",
+  maxHeight: "200px",
+  border: `1px solid ${theme.palette.divider}`,
+  borderRadius: theme.shape.borderRadius
+}));
+
+const StyledSignatureCanvas = styled("div")(({ theme }) => ({
+  border: `1px solid ${theme.palette.divider}`,
+  borderRadius: theme.shape.borderRadius,
+  backgroundColor: "#fff",
+  width: "100%",
+  height: "200px"
+}));
+
+export default function SignatureFormElement({
+  formElement,
+  value,
+  update,
+  validationResults,
+  uuid
+}) {
+  const { t } = useTranslation();
+  const { mandatory, name } = formElement;
+  const validationResult = find(
+    validationResults,
+    ({ formIdentifier, questionGroupIndex }) =>
+      formIdentifier === uuid && questionGroupIndex === 0
+  );
+  const signatureRef = useRef(null);
+  const [hasSignature, setHasSignature] = useState(false);
+  const [isUploading, setIsUploading] = useState(false);
+  const [existingSignature, setExistingSignature] = useState(null);
+
+  useEffect(() => {
+    if (value) {
+      setHasSignature(true);
+      setExistingSignature(value);
+    } else {
+      setExistingSignature(null);
+    }
+  }, [value]);
+
+  const clearCanvas = () => {
+    if (signatureRef.current) {
+      signatureRef.current.clear();
+    }
+    setHasSignature(false);
+    setExistingSignature(null);
+    update(null);
+  };
+
+  const saveSignature = () => {
+    if (!signatureRef.current) return;
+
+    if (signatureRef.current.isEmpty()) {
+      alert("Please draw a signature before saving");
+      return;
+    }
+
+    setIsUploading(true);
+
+    const signatureData = signatureRef.current.getDataURL();
+
+    fetch(signatureData)
+      .then(res => res.blob())
+      .then(blob => {
+        const file = Object.assign(blob, {
+          name: "signature.png",
+          type: "image/png"
+        });
+
+        http
+          .uploadFile("/web/uploadMedia", file)
+          .then(response => {
+            setIsUploading(false);
+            setHasSignature(true);
+            setExistingSignature(response.data);
+            update(response.data);
+          })
+          .catch(error => {
+            setIsUploading(false);
+            const errorMessage =
+              get(error, "response.data") ||
+              get(error, "message") ||
+              "Failed to upload signature";
+            alert(errorMessage);
+          });
+      })
+      .catch(() => {
+        setIsUploading(false);
+        alert("Failed to process signature");
+      });
+  };
+
+  const handleBegin = () => {
+    setHasSignature(true);
+  };
+
+  const handleEnd = () => {};
+
+  return (
+    <SignatureContainer>
+      <Typography variant="subtitle1" color="textSecondary">
+        {t(name)} {mandatory && "*"}
+      </Typography>
+
+      {existingSignature ? (
+        <Paper elevation={1} sx={{ p: 2 }}>
+          <SignatureImage src={existingSignature} alt="Signature" />
+          <ButtonContainer sx={{ mt: 2 }}>
+            <Button
+              variant="outlined"
+              onClick={clearCanvas}
+              disabled={isUploading}
+            >
+              {t("Clear")}
+            </Button>
+          </ButtonContainer>
+        </Paper>
+      ) : (
+        <Paper elevation={1} sx={{ p: 2 }}>
+          <StyledSignatureCanvas>
+            <SignatureCanvas
+              ref={signatureRef}
+              canvasProps={{
+                width: "100%",
+                height: "200px",
+                className: "signature-canvas"
+              }}
+              onBegin={handleBegin}
+              onEnd={handleEnd}
+            />
+          </StyledSignatureCanvas>
+
+          <ButtonContainer sx={{ mt: 2 }}>
+            <Button
+              variant="outlined"
+              onClick={clearCanvas}
+              disabled={isUploading}
+            >
+              {t("Clear")}
+            </Button>
+            <Button
+              variant="contained"
+              onClick={saveSignature}
+              disabled={isUploading || !hasSignature}
+            >
+              {isUploading ? t("Uploading...") : t("Save Signature")}
+            </Button>
+          </ButtonContainer>
+        </Paper>
+      )}
+
+      {validationResult && (
+        <ValidationError validationResult={validationResult} />
+      )}
+    </SignatureContainer>
+  );
+}

src/formDesigner/common/constants.js

@@ -85,5 +85,6 @@ export const inlineConceptDataType = _.sortBy([
   "Audio",
   "File",
   "QuestionGroup",
-  "Encounter"
+  "Encounter",
+  "Signature"
 ]);