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@@ -0,0 +1,478 @@
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+// @ts-check
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+// A simple completions and chat/completions test related web front end logic
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+// by Humans for All
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+
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+class Roles {
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+ static System = "system";
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+ static User = "user";
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+ static Assistant = "assistant";
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+}
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+
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+class ApiEP {
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+ static Chat = "chat";
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+ static Completion = "completion";
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+}
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+
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+let gUsageMsg = `
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+ <p> Enter the system prompt above, before entering/submitting any user query.</p>
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+ <p> Enter your text to the ai assistant below.</p>
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+ <p> Use shift+enter for inserting enter.</p>
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+ <p> Refresh the page to start over fresh.</p>
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+`;
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+
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+class SimpleChat {
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+
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+ constructor() {
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+ /**
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+ * Maintain in a form suitable for common LLM web service chat/completions' messages entry
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+ * @type {{role: string, content: string}[]}
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+ */
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+ this.xchat = [];
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+ this.iLastSys = -1;
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+ }
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+
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+ /**
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+ * Add an entry into xchat
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+ * @param {string} role
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+ * @param {string|undefined|null} content
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+ */
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+ add(role, content) {
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+ if ((content == undefined) || (content == null) || (content == "")) {
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+ return false;
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+ }
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+ this.xchat.push( {role: role, content: content} );
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+ if (role == Roles.System) {
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+ this.iLastSys = this.xchat.length - 1;
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+ }
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+ return true;
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+ }
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+
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+ /**
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+ * Show the contents in the specified div
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+ * @param {HTMLDivElement} div
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+ * @param {boolean} bClear
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+ */
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+ show(div, bClear=true) {
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+ if (bClear) {
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+ div.replaceChildren();
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+ }
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+ let last = undefined;
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+ for(const x of this.xchat) {
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+ let entry = document.createElement("p");
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+ entry.className = `role-${x.role}`;
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+ entry.innerText = `${x.role}: ${x.content}`;
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+ div.appendChild(entry);
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+ last = entry;
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+ }
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+ if (last !== undefined) {
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+ last.scrollIntoView(false);
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+ } else {
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+ if (bClear) {
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+ div.innerHTML = gUsageMsg;
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+ }
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+ }
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+ }
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+
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+ /**
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+ * Add needed fields wrt json object to be sent wrt LLM web services completions endpoint
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+ * Convert the json into string.
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+ * @param {Object} obj
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+ */
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+ request_jsonstr(obj) {
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+ obj["temperature"] = 0.7;
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+ return JSON.stringify(obj);
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+ }
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+
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+ /**
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+ * Return a string form of json object suitable for chat/completions
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+ */
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+ request_messages_jsonstr() {
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+ let req = {
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+ messages: this.xchat,
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+ }
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+ return this.request_jsonstr(req);
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+ }
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+
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+ /**
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+ * Return a string form of json object suitable for /completions
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+ */
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+ request_prompt_jsonstr() {
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+ let prompt = "";
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+ for(const chat of this.xchat) {
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+ prompt += `${chat.role}: ${chat.content}\n`;
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+ }
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+ let req = {
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+ prompt: prompt,
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+ }
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+ return this.request_jsonstr(req);
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+ }
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+
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+ /**
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+ * Allow setting of system prompt, but only at begining.
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+ * @param {string} sysPrompt
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+ * @param {string} msgTag
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+ */
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+ add_system_begin(sysPrompt, msgTag) {
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+ if (this.xchat.length == 0) {
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+ if (sysPrompt.length > 0) {
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+ return this.add(Roles.System, sysPrompt);
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+ }
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+ } else {
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+ if (sysPrompt.length > 0) {
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+ if (this.xchat[0].role !== Roles.System) {
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+ console.error(`ERRR:SimpleChat:SC:${msgTag}:You need to specify system prompt before any user query, ignoring...`);
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+ } else {
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+ if (this.xchat[0].content !== sysPrompt) {
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+ console.error(`ERRR:SimpleChat:SC:${msgTag}:You cant change system prompt, mid way through, ignoring...`);
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+ }
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+ }
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+ }
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+ }
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+ return false;
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+ }
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+
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+ /**
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+ * Allow setting of system prompt, at any time.
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+ * @param {string} sysPrompt
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+ * @param {string} msgTag
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+ */
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+ add_system_anytime(sysPrompt, msgTag) {
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+ if (sysPrompt.length <= 0) {
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+ return false;
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+ }
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+
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+ if (this.iLastSys < 0) {
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+ return this.add(Roles.System, sysPrompt);
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+ }
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+
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+ let lastSys = this.xchat[this.iLastSys].content;
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+ if (lastSys !== sysPrompt) {
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+ return this.add(Roles.System, sysPrompt);
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+ }
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+ return false;
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+ }
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+
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+ /**
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+ * Retrieve the latest system prompt.
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+ */
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+ get_system_latest() {
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+ if (this.iLastSys == -1) {
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+ return "";
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+ }
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+ let sysPrompt = this.xchat[this.iLastSys].content;
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+ return sysPrompt;
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+ }
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+
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+}
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+
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+
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+let gBaseURL = "http://127.0.0.1:8080";
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+let gChatURL = {
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+ 'chat': `${gBaseURL}/chat/completions`,
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+ 'completion': `${gBaseURL}/completions`,
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+}
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+const gbCompletionFreshChatAlways = true;
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+
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+
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+/**
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+ * Set the class of the children, based on whether it is the idSelected or not.
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+ * @param {HTMLDivElement} elBase
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+ * @param {string} idSelected
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+ * @param {string} classSelected
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+ * @param {string} classUnSelected
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+ */
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+function el_children_config_class(elBase, idSelected, classSelected, classUnSelected="") {
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+ for(let child of elBase.children) {
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+ if (child.id == idSelected) {
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+ child.className = classSelected;
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+ } else {
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+ child.className = classUnSelected;
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+ }
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+ }
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+}
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+
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+/**
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+ * Create button and set it up.
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+ * @param {string} id
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+ * @param {(this: HTMLButtonElement, ev: MouseEvent) => any} callback
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+ * @param {string | undefined} name
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+ * @param {string | undefined} innerText
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+ */
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+function el_create_button(id, callback, name=undefined, innerText=undefined) {
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+ if (!name) {
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+ name = id;
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+ }
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+ if (!innerText) {
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+ innerText = id;
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+ }
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+ let btn = document.createElement("button");
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+ btn.id = id;
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+ btn.name = name;
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+ btn.innerText = innerText;
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+ btn.addEventListener("click", callback);
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+ return btn;
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+}
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+
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+
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+class MultiChatUI {
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+
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+ constructor() {
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+ /** @type {Object<string, SimpleChat>} */
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+ this.simpleChats = {};
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+ /** @type {string} */
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+ this.curChatId = "";
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+
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+ // the ui elements
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+ this.elInSystem = /** @type{HTMLInputElement} */(document.getElementById("system-in"));
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+ this.elDivChat = /** @type{HTMLDivElement} */(document.getElementById("chat-div"));
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+ this.elBtnUser = /** @type{HTMLButtonElement} */(document.getElementById("user-btn"));
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+ this.elInUser = /** @type{HTMLInputElement} */(document.getElementById("user-in"));
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+ this.elSelectApiEP = /** @type{HTMLSelectElement} */(document.getElementById("api-ep"));
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+ this.elDivSessions = /** @type{HTMLDivElement} */(document.getElementById("sessions-div"));
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+
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+ this.validate_element(this.elInSystem, "system-in");
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+ this.validate_element(this.elDivChat, "chat-div");
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+ this.validate_element(this.elInUser, "user-in");
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+ this.validate_element(this.elSelectApiEP, "api-ep");
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+ this.validate_element(this.elDivChat, "sessions-div");
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+ }
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+
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+ /**
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+ * Check if the element got
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+ * @param {HTMLElement | null} el
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+ * @param {string} msgTag
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+ */
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+ validate_element(el, msgTag) {
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+ if (el == null) {
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+ throw Error(`ERRR:SimpleChat:MCUI:${msgTag} element missing in html...`);
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+ } else {
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+ console.debug(`INFO:SimpleChat:MCUI:${msgTag} Id[${el.id}] Name[${el["name"]}]`);
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+ }
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+ }
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+
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+ /**
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+ * Reset user input ui.
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+ * * clear user input
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+ * * enable user input
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+ * * set focus to user input
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+ */
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+ ui_reset_userinput() {
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+ this.elInUser.value = "";
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+ this.elInUser.disabled = false;
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+ this.elInUser.focus();
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+ }
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+
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+ /**
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+ * Setup the needed callbacks wrt UI, curChatId to defaultChatId and
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+ * optionally switch to specified defaultChatId.
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+ * @param {string} defaultChatId
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+ * @param {boolean} bSwitchSession
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+ */
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+ setup_ui(defaultChatId, bSwitchSession=false) {
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+
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+ this.curChatId = defaultChatId;
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+ if (bSwitchSession) {
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+ this.handle_session_switch(this.curChatId);
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+ }
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+
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+ this.elBtnUser.addEventListener("click", (ev)=>{
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+ if (this.elInUser.disabled) {
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+ return;
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+ }
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+ this.handle_user_submit(this.curChatId, this.elSelectApiEP.value).catch((/** @type{Error} */reason)=>{
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+ let msg = `ERRR:SimpleChat\nMCUI:HandleUserSubmit:${this.curChatId}\n${reason.name}:${reason.message}`;
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+ console.debug(msg.replace("\n", ":"));
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+ alert(msg);
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+ this.ui_reset_userinput();
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+ });
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+ });
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+
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+ this.elInUser.addEventListener("keyup", (ev)=> {
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+ // allow user to insert enter into their message using shift+enter.
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+ // while just pressing enter key will lead to submitting.
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+ if ((ev.key === "Enter") && (!ev.shiftKey)) {
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+ this.elBtnUser.click();
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+ ev.preventDefault();
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+ }
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+ });
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+
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+ this.elInSystem.addEventListener("keyup", (ev)=> {
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+ // allow user to insert enter into the system prompt using shift+enter.
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+ // while just pressing enter key will lead to setting the system prompt.
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+ if ((ev.key === "Enter") && (!ev.shiftKey)) {
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+ let chat = this.simpleChats[this.curChatId];
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+ chat.add_system_anytime(this.elInSystem.value, this.curChatId);
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+ chat.show(this.elDivChat);
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+ ev.preventDefault();
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+ }
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+ });
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+
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+ }
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+
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+ /**
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+ * Setup a new chat session and optionally switch to it.
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+ * @param {string} chatId
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+ * @param {boolean} bSwitchSession
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+ */
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+ new_chat_session(chatId, bSwitchSession=false) {
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+ this.simpleChats[chatId] = new SimpleChat();
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+ if (bSwitchSession) {
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+ this.handle_session_switch(chatId);
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+ }
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+ }
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+
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+ /**
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+ * Handle user query submit request, wrt specified chat session.
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+ * @param {string} chatId
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+ * @param {string} apiEP
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+ */
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+ async handle_user_submit(chatId, apiEP) {
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+
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+ let chat = this.simpleChats[chatId];
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+
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+ chat.add_system_anytime(this.elInSystem.value, chatId);
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+
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+ let content = this.elInUser.value;
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+ if (!chat.add(Roles.User, content)) {
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+ console.debug(`WARN:SimpleChat:MCUI:${chatId}:HandleUserSubmit:Ignoring empty user input...`);
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+ return;
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+ }
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+ chat.show(this.elDivChat);
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+
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+ let theBody;
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+ let theUrl = gChatURL[apiEP]
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+ if (apiEP == ApiEP.Chat) {
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+ theBody = chat.request_messages_jsonstr();
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+ } else {
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+ theBody = chat.request_prompt_jsonstr();
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+ }
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+
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+ this.elInUser.value = "working...";
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|
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+ this.elInUser.disabled = true;
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+ console.debug(`DBUG:SimpleChat:MCUI:${chatId}:HandleUserSubmit:${theUrl}:ReqBody:${theBody}`);
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|
|
|
+ let resp = await fetch(theUrl, {
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|
|
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+ method: "POST",
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+ headers: {
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+ "Content-Type": "application/json",
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+ },
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+ body: theBody,
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|
|
+ });
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|
|
+
|
|
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|
|
+ let respBody = await resp.json();
|
|
|
|
|
+ console.debug(`DBUG:SimpleChat:MCUI:${chatId}:HandleUserSubmit:RespBody:${JSON.stringify(respBody)}`);
|
|
|
|
|
+ let assistantMsg;
|
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|
|
|
+ if (apiEP == ApiEP.Chat) {
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|
|
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+ assistantMsg = respBody["choices"][0]["message"]["content"];
|
|
|
|
|
+ } else {
|
|
|
|
|
+ try {
|
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|
|
|
+ assistantMsg = respBody["choices"][0]["text"];
|
|
|
|
|
+ } catch {
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|
|
|
+ assistantMsg = respBody["content"];
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+ chat.add(Roles.Assistant, assistantMsg);
|
|
|
|
|
+ if (chatId == this.curChatId) {
|
|
|
|
|
+ chat.show(this.elDivChat);
|
|
|
|
|
+ } else {
|
|
|
|
|
+ console.debug(`DBUG:SimpleChat:MCUI:HandleUserSubmit:ChatId has changed:[${chatId}] [${this.curChatId}]`);
|
|
|
|
|
+ }
|
|
|
|
|
+ // Purposefully clear at end rather than begin of this function
|
|
|
|
|
+ // so that one can switch from chat to completion mode and sequece
|
|
|
|
|
+ // in a completion mode with multiple user-assistant chat data
|
|
|
|
|
+ // from before to be sent/occur once.
|
|
|
|
|
+ if ((apiEP == ApiEP.Completion) && (gbCompletionFreshChatAlways)) {
|
|
|
|
|
+ chat.xchat.length = 0;
|
|
|
|
|
+ }
|
|
|
|
|
+ this.ui_reset_userinput();
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ /**
|
|
|
|
|
+ * Show buttons for NewChat and available chat sessions, in the passed elDiv.
|
|
|
|
|
+ * If elDiv is undefined/null, then use this.elDivSessions.
|
|
|
|
|
+ * Take care of highlighting the selected chat-session's btn.
|
|
|
|
|
+ * @param {HTMLDivElement | undefined} elDiv
|
|
|
|
|
+ */
|
|
|
|
|
+ show_sessions(elDiv=undefined) {
|
|
|
|
|
+ if (!elDiv) {
|
|
|
|
|
+ elDiv = this.elDivSessions;
|
|
|
|
|
+ }
|
|
|
|
|
+ elDiv.replaceChildren();
|
|
|
|
|
+ // Btn for creating new chat session
|
|
|
|
|
+ let btnNew = el_create_button("New CHAT", (ev)=> {
|
|
|
|
|
+ if (this.elInUser.disabled) {
|
|
|
|
|
+ console.error(`ERRR:SimpleChat:MCUI:NewChat:Current session [${this.curChatId}] awaiting response, ignoring request...`);
|
|
|
|
|
+ alert("ERRR:SimpleChat\nMCUI:NewChat\nWait for response to pending query, before starting new chat session");
|
|
|
|
|
+ return;
|
|
|
|
|
+ }
|
|
|
|
|
+ let chatId = `Chat${Object.keys(this.simpleChats).length}`;
|
|
|
|
|
+ let chatIdGot = prompt("INFO:SimpleChat\nMCUI:NewChat\nEnter id for new chat session", chatId);
|
|
|
|
|
+ if (!chatIdGot) {
|
|
|
|
|
+ console.error("ERRR:SimpleChat:MCUI:NewChat:Skipping based on user request...");
|
|
|
|
|
+ return;
|
|
|
|
|
+ }
|
|
|
|
|
+ this.new_chat_session(chatIdGot, true);
|
|
|
|
|
+ this.create_session_btn(elDiv, chatIdGot);
|
|
|
|
|
+ el_children_config_class(elDiv, chatIdGot, "session-selected", "");
|
|
|
|
|
+ });
|
|
|
|
|
+ elDiv.appendChild(btnNew);
|
|
|
|
|
+ // Btns for existing chat sessions
|
|
|
|
|
+ let chatIds = Object.keys(this.simpleChats);
|
|
|
|
|
+ for(let cid of chatIds) {
|
|
|
|
|
+ let btn = this.create_session_btn(elDiv, cid);
|
|
|
|
|
+ if (cid == this.curChatId) {
|
|
|
|
|
+ btn.className = "session-selected";
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ create_session_btn(elDiv, cid) {
|
|
|
|
|
+ let btn = el_create_button(cid, (ev)=>{
|
|
|
|
|
+ let target = /** @type{HTMLButtonElement} */(ev.target);
|
|
|
|
|
+ console.debug(`DBUG:SimpleChat:MCUI:SessionClick:${target.id}`);
|
|
|
|
|
+ if (this.elInUser.disabled) {
|
|
|
|
|
+ console.error(`ERRR:SimpleChat:MCUI:SessionClick:${target.id}:Current session [${this.curChatId}] awaiting response, ignoring switch...`);
|
|
|
|
|
+ alert("ERRR:SimpleChat\nMCUI:SessionClick\nWait for response to pending query, before switching");
|
|
|
|
|
+ return;
|
|
|
|
|
+ }
|
|
|
|
|
+ this.handle_session_switch(target.id);
|
|
|
|
|
+ el_children_config_class(elDiv, target.id, "session-selected", "");
|
|
|
|
|
+ });
|
|
|
|
|
+ elDiv.appendChild(btn);
|
|
|
|
|
+ return btn;
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ /**
|
|
|
|
|
+ * Switch ui to the specified chatId and set curChatId to same.
|
|
|
|
|
+ * @param {string} chatId
|
|
|
|
|
+ */
|
|
|
|
|
+ async handle_session_switch(chatId) {
|
|
|
|
|
+ let chat = this.simpleChats[chatId];
|
|
|
|
|
+ if (chat == undefined) {
|
|
|
|
|
+ console.error(`ERRR:SimpleChat:MCUI:HandleSessionSwitch:${chatId} missing...`);
|
|
|
|
|
+ return;
|
|
|
|
|
+ }
|
|
|
|
|
+ this.elInSystem.value = chat.get_system_latest();
|
|
|
|
|
+ this.elInUser.value = "";
|
|
|
|
|
+ chat.show(this.elDivChat);
|
|
|
|
|
+ this.elInUser.focus();
|
|
|
|
|
+ this.curChatId = chatId;
|
|
|
|
|
+ console.log(`INFO:SimpleChat:MCUI:HandleSessionSwitch:${chatId} entered...`);
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+
|
|
|
|
|
+let gMuitChat;
|
|
|
|
|
+const gChatIds = [ "Default", "Other" ];
|
|
|
|
|
+
|
|
|
|
|
+function startme() {
|
|
|
|
|
+ console.log("INFO:SimpleChat:StartMe:Starting...");
|
|
|
|
|
+ gMuitChat = new MultiChatUI();
|
|
|
|
|
+ for (let cid of gChatIds) {
|
|
|
|
|
+ gMuitChat.new_chat_session(cid);
|
|
|
|
|
+ }
|
|
|
|
|
+ gMuitChat.setup_ui(gChatIds[0]);
|
|
|
|
|
+ gMuitChat.show_sessions();
|
|
|
|
|
+}
|
|
|
|
|
+
|
|
|
|
|
+document.addEventListener("DOMContentLoaded", startme);
|