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@seratch
seratch committed Dec 27, 2022
1 parent 3b879cb commit 08d64f2
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192 changes: 102 additions & 90 deletions src/deepl.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,107 10,119 @@ export class DeepLApi {
this.authKey = authKey;
this.logger = logger;
const usingFreePlan = process.env.DEEPL_FREE_API_PLAN === "1";
const apiSubdomain = usingFreePlan ? 'api-free' : 'api';
const apiSubdomain = usingFreePlan ? "api-free" : "api";
this.axiosInstance = axios.create({
baseURL: `https://${apiSubdomain}.deepl.com/v2`,
timeout: 30000,
});
}

async translate(text: string, targetLanguage: string): Promise<string | null> {
async translate(
text: string,
targetLanguage: string
): Promise<string | null> {
return this.axiosInstance({
url: "/translate",
data: qs.stringify({
auth_key: this.authKey,

// match special parsing
text: text.replace(/<(.*?)>/g, function(i: any, match: string) {

// match #channels and @mentions
if(match.match(/^[#@].*$/)) {
const matched = match.match(/^([#@].*)$/);
if (matched != null) {
return '<mrkdwn>' matched[1] '</mrkdwn>';
}
return '';
}

// match subteam
if(match.match(/^!subteam.*$/)) {
return '@[subteam mention removed]';
}

// match date formatting
if(match.match(/^!date.*$/)) {
const matched = match.match(/^(!date.*)$/);
if (matched != null) {
return '<mrkdwn>' matched[1] '</mrkdwn>';
}
return '';
}

// match special mention
if(match.match(/^!.*$/)) {
const matched = match.match(/^!(.*?)(?:\|.*)?$/);
if (matched != null) {
return '<ignore>@' matched[1] '</ignore>';
}
return '<ignore>@[special mention]</ignore>';
}

// match formatted link
if(match.match(/^.*?\|.*$/)) {
const matched = match.match(/^(.*?)\|(.*)$/);
if (matched != null) {
return '<a href="' matched[1] '">' matched[2] '</a>';
}
return '';
}

// fallback (raw link or unforeseen formatting)
return '<mrkdwn>' match '</mrkdwn>';

// match emoji
}).replace(/:([a-z0-9_-] ):/g, function(i: any, match: string) {
return '<emoji>' match '</emoji>';
}),
text:
// Before sending the text to the DeepL API,
// replace special syntax parts with ignore tags to keep them
text
.replace(/<(.*?)>/g, (_: any, match: string) => {
// match #channels and @mentions
if (match.match(/^[#@].*$/)) {
const matched = match.match(/^([#@].*)$/);
if (matched != null) {
return "<mrkdwn>" matched[1] "</mrkdwn>";
}
return "";
}
// match subteam
if (match.match(/^!subteam.*$/)) {
return "@[subteam mention removed]";
}
// match date formatting
if (match.match(/^!date.*$/)) {
const matched = match.match(/^(!date.*)$/);
if (matched != null) {
return "<mrkdwn>" matched[1] "</mrkdwn>";
}
return "";
}
// match special mention
if (match.match(/^!.*$/)) {
const matched = match.match(/^!(.*?)(?:\|.*)?$/);
if (matched != null) {
return "<ignore>@" matched[1] "</ignore>";
}
return "<ignore>@[special mention]</ignore>";
}
// match formatted link
if (match.match(/^.*?\|.*$/)) {
const matched = match.match(/^(.*?)\|(.*)$/);
if (matched != null) {
return '<a href="' matched[1] '">' matched[2] "</a>";
}
return "";
}
// fallback (raw link or unforeseen formatting)
return "<mrkdwn>" match "</mrkdwn>";
// match emoji
})
.replace(/:([a-z0-9_-] ):/g, (_, match: string) => {
return "<emoji>" match "</emoji>";
}),
target_lang: targetLanguage.toUpperCase(),
tag_handling: 'xml',
ignore_tags: 'emoji,mrkdwn,ignore'
tag_handling: "xml",
ignore_tags: "emoji,mrkdwn,ignore",
}),
headers: {
"content-type": "application/x-www-form-urlencoded;charset=utf-8"
}
}).then(response => {
this.logger.debug(response.data);
if (response.data.translations && response.data.translations.length > 0) {

// match emoji
return response.data.translations[0].text.replace(/<emoji>([a-z0-9_-] )<\/emoji>/g, function(i: any, match: string) {
return ':' match ':';

// match <mrkdwn>...</mrkdwn>
}).replace(/<mrkdwn>(.*?)<\/mrkdwn>/g, function(i: any, match: string) {
return '<' match '>';

// match <a href="...">...</a>
}).replace(/(<a href="(?:.*?)">(?:.*?)<\/a>)/g, function(i: any, match: string) {
const matched = match.match(/<a href="(.*?)">(.*?)<\/a>/);
if (matched != null) {
return '<' matched[1] '|' matched[2] '>';
}
return '';

// match <ignore>...</ignore>
}).replace(/<ignore>(.*?)<\/ignore>/g, function(i: any, match: string) {
return match;
});
} else {
return ":x: Failed to translate it due to an unexpected response from DeepL API";
}
}).catch(error => {
this.logger.error(`Failed to translate - text: ${text} error: ${error}`);
return `:x: Failed to translate it due to ${error}`;
});
"content-type": "application/x-www-form-urlencoded;charset=utf-8",
},
})
.then((response) => {
this.logger.debug(response.data);
if (
response.data.translations &&
response.data.translations.length > 0
) {
// Parse ecoding tags to restore the original special syntax
return response.data.translations[0].text
.replace(
/<emoji>([a-z0-9_-] )<\/emoji>/g,
(_: any, match: string) => {
return ":" match ":";
// match <mrkdwn>...</mrkdwn>
}
)
.replace(/<mrkdwn>(.*?)<\/mrkdwn>/g, (_: any, match: string) => {
return "<" match ">";
// match <a href="...">...</a>
})
.replace(
/(<a href="(?:.*?)">(?:.*?)<\/a>)/g,
(_: any, match: string) => {
const matched = match.match(/<a href="(.*?)">(.*?)<\/a>/);
if (matched != null) {
return "<" matched[1] "|" matched[2] ">";
}
return "";
// match <ignore>...</ignore>
}
)
.replace(/<ignore>(.*?)<\/ignore>/g, (_: any, match: string) => {
return match;
});
} else {
return ":x: Failed to translate it due to an unexpected response from DeepL API";
}
})
.catch((error) => {
this.logger.error(
`Failed to translate - text: ${text} error: ${error}`
);
return `:x: Failed to translate it due to ${error}`;
});
}
}
}

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