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Adding single MimeType to extension translator #63

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merged 3 commits into from
Jul 18, 2024
Merged

Adding single MimeType to extension translator #63

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a2c1bed
adding getMimeToExt as a separate function for extensive list
Jul 17, 2024
172637e
cleanup and structure
Jul 18, 2024
91583c6
clean up
Jul 18, 2024
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78 changes: 49 additions & 29 deletions src/main/java/com/meta/cp4m/message/Payload.java
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Original file line number Diff line number Diff line change
Expand Up @@ -53,24 +53,12 @@ public int hashCode() {
}

final class Image implements Payload<byte[]> {
// mime types and corresponding extensions derived from
// https://developers.facebook.com/docs/whatsapp/cloud-api/reference/media#image

private static final Map<String, String> MIME_TO_EXTENSION =
ImmutableMap.<String, String>builder()
.put("image/jpeg", "jpeg")
.put("image/png", "png")
.put("image/webp", "webp")
.build();

private final String mimeType;
private final String extension;
private final byte[] payload;

public Image(byte[] payload, String mimeType) {
this.extension =
Objects.requireNonNull(
MIME_TO_EXTENSION.get(mimeType.strip()), "Unknown mime type " + mimeType);
this.extension = MimeTypeUtils.getMimeToExt(mimeType.strip());
this.mimeType = mimeType;
this.payload = payload;
}
Expand Down Expand Up @@ -112,27 +100,12 @@ public int hashCode() {
}

final class Document implements Payload<byte[]> {
// https://developers.facebook.com/docs/whatsapp/cloud-api/reference/media#document
private static final Map<String, String> MIME_TO_EXTENSION =
ImmutableMap.<String, String>builder()
.put("text/plain", "txt")
.put("application/vnd.ms-excel", "xls")
.put("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx")
.put("application/msword", "doc")
.put("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx")
.put("application/vnd.ms-powerpoint", "ppt")
.put(
"application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx")
.put("application/pdf", "pdf")
.build();

private final String mimeType;
private final String extension;
private final byte[] payload;

public Document(byte[] payload, String mimeType) {
@Nullable String extension = MIME_TO_EXTENSION.get(mimeType.strip());
this.extension = extension == null ? "bin" : extension; // default to binary if it's unknown
this.extension = MimeTypeUtils.getMimeToExt(mimeType.strip());
this.mimeType = mimeType;
this.payload = payload;
}
Expand Down Expand Up @@ -172,4 +145,51 @@ public int hashCode() {
return result;
}
}

final class MimeTypeUtils {
// MIME types and corresponding extensions
private static final Map<String, String> MIME_TO_EXTENSION =
ImmutableMap.<String, String>builder()
.put("application/gzip", "gz")
.put("application/json", "json")
.put("application/msword", "doc")
.put("application/pdf", "pdf")
.put("application/rtf", "rtf")
.put("application/vnd.amazon.ebook", "azw")
.put("application/vnd.ms-excel", "xls")
.put("application/vnd.ms-powerpoint", "ppt")
.put("application/vnd.oasis.opendocument.presentation", "odp")
.put("application/vnd.oasis.opendocument.spreadsheet", "ods")
.put("application/vnd.oasis.opendocument.text", "odt")
.put("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx")
.put("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx")
.put("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx")
.put("application/vnd.rar", "rar")
.put("application/x-abiword", "abw")
.put("application/x-bzip", "bz")
.put("application/x-bzip2", "bz2")
.put("application/x-freearc", "arc")
.put("application/x-tar", "tar")
.put("application/xml", "xml")
.put("application/zip", "zip")
.put("image/apng", "apng")
.put("image/avif", "avif")
.put("image/bmp", "bmp")
.put("image/gif", "gif")
.put("image/jpeg", "jpeg")
.put("image/png", "png")
.put("image/svg+xml", "svg")
.put("image/tiff", "tif")
.put("image/webp", "webp")
.put("text/calendar", "ics")
.put("text/csv", "csv")
.put("text/html", "html")
.put("text/plain", "txt")
.build();

// Static method to get the file extension based on MIME type
public static String getMimeToExt(String mimeType) {
return Objects.requireNonNullElse(MIME_TO_EXTENSION.get(mimeType), "bin");
}
}
}
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