/*
 *  ThunderAI [https://micz.it/thunderbird-addon-thunderai/]
 *  Copyright (C) 2024  Mic (m@micz.it)

 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.

 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.

 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { mzta_script } from './js/mzta-chatgpt.js';
import { prefs_default } from './options/mzta-options-default.js';
import { mzta_Menus } from './js/mzta-menus.js';
import { taLogger } from './js/mzta-logger.js';
import { getCurrentIdentity, getOriginalBody, replaceBody, setBody, i18nConditionalGet, generateCallID, migrateCustomPromptsStorage, migrateDefaultPromptsPropStorage } from './js/mzta-utils.js';

await migrateCustomPromptsStorage();
await migrateDefaultPromptsPropStorage();

var original_html = '';
var modified_html = '';

let prefs_debug = await browser.storage.sync.get({do_debug: false});
let taLog = new taLogger("mzta-background",prefs_debug.do_debug);

browser.composeScripts.register({
    js: [{ file: "js/mzta-compose-script.js" }],
    css: [{ file: "css/mzta-compose-styles.css" }],
});

// Register the message display script for all newly opened message tabs.
messenger.messageDisplayScripts.register({
    js: [{ file: "js/mzta-compose-script.js" }],
    css: [{ file: "css/mzta-compose-styles.css" }],
});

// Inject script and CSS in all already open message tabs.
let openTabs = await messenger.tabs.query();
let messageTabs = openTabs.filter(
    tab => ["mail", "messageDisplay"].includes(tab.type)
);
for (let messageTab of messageTabs) {
    if((messageTab.url == undefined) || (["start.thunderbird.net","about:blank"].some(blockedUrl => messageTab.url.includes(blockedUrl)))) {
        continue;
    }
    try {
        await browser.tabs.executeScript(messageTab.id, {
            file: "js/mzta-compose-script.js"
        });
        await browser.tabs.insertCSS(messageTab.id, {
            file: "css/mzta-compose-styles.css"
        });
    } catch (error) {
        console.error("[ThunderAI] Error injecting message display script:", error);
        console.error("[ThunderAI] Message tab:", messageTab.url);
    }
}

browser.contentScripts.register({
    matches: ["https://*.chatgpt.com/*"],
    js: [{file: "js/mzta-chatgpt-loader.js"}],
    runAt: "document_idle"
  });

let ThunderAI_Shortcut = "Ctrl+Alt+A";

// Shortcut
messenger.commands.update({
    name: "_thunderai__do_action",
    shortcut: ThunderAI_Shortcut
}).then(() => {
    taLog.log('Shortcut [' + ThunderAI_Shortcut + '] registered successfully!');
}).catch((error) => {
    taLog.error('Error registering shortcut [' + ThunderAI_Shortcut + ']: ' + error);
});

// Listen for shortcut command
messenger.commands.onCommand.addListener((command, tab) => {
    if (command === "_thunderai__do_action") {
        handleShortcut(tab);
    }
  });
  
  
async function handleShortcut(tab) {
    taLog.log("Shortcut triggered!");
    if(!["mail", "messageCompose","messageDisplay"].includes(tab.type)){
        return;
    }
    browser.tabs.sendMessage(tab.id, { command: "searchPrompt", _prompts_data: menus.shortcutMenu, tabId: tab.id, _tab_type: tab.type });
}

messenger.runtime.onMessage.addListener(async (message, sender, sendResponse) => {
    // Check what type of message we have received and invoke the appropriate
    // handler function.
    if (message && message.hasOwnProperty("command")){
        switch (message.command) {
            // case 'chatgpt_open':
            //         openChatGPT(message.prompt,message.action,message.tabId);
            //         return true;
            case 'chatgpt_close':
                    browser.windows.remove(message.window_id).then(() => {
                        taLog.log("ChatGPT window closed successfully.");
                        return true;
                    }).catch((error) => {
                        taLog.error("Error closing ChatGPT window:", error);
                        return false;
                    });
                    break;
            case 'chatgpt_replaceSelectedText':
                    //console.log('chatgpt_replaceSelectedText: [' + message.tabId +'] ' + message.text)
                    original_html = await getOriginalBody(message.tabId);
                    await browser.tabs.sendMessage(message.tabId, { command: "replaceSelectedText", text: message.text, tabId: message.tabId });
                    return true;
            case 'chatgpt_replyMessage':
                const paragraphsHtmlString = message.text;
                //console.log(">>>>>>>>>>>> paragraphsHtmlString: " + paragraphsHtmlString);
                let prefs = await browser.storage.sync.get({reply_type: 'reply_all'});
                //console.log('reply_type: ' + prefs.reply_type);
                let replyType = 'replyToAll';
                if(prefs.reply_type === 'reply_sender'){
                    replyType = 'replyToSender';
                }
                //console.log('replyType: ' + replyType);
                // browser.messageDisplay.getDisplayedMessage(message.tabId).then(async (mailMessage) => {
                //     let reply_tab = await browser.compose.beginReply(mailMessage.id, replyType, {
                //         type: "reply",
                //         //body:  paragraphsHtmlString,
                //         isPlainText: false,
                //         identityId: await getCurrentIdentity(mailMessage),
                //     })
                //console.log(">>>>>>>>>>>> message.mailMessageId: " + message.mailMessageId);
                browser.messages.get(message.mailMessageId).then(async (mailMessage) => {
                let curr_idn = await getCurrentIdentity(mailMessage)
                let reply_tab = await browser.compose.beginReply(mailMessage.id, replyType, {
                    type: "reply",
                    //body:  paragraphsHtmlString,
                    isPlainText: false,
                    identityId: curr_idn,
                })
                    // Wait for tab loaded.
                    await new Promise(resolve => {
                        const tabIsLoaded = tab => {
                            return tab.status == "complete" && tab.url != "about:blank";
                        };
                        const listener = (tabId, changeInfo, updatedTab) => {
                            if (tabIsLoaded(updatedTab)) {
                                browser.tabs.onUpdated.removeListener(listener);
                                //console.log(">>>>>>>>>>>> reply_tab: " + tabId);
                                resolve();
                            }
                        }
                        // Early exit if loaded already
                        if (tabIsLoaded(reply_tab)) {
                            resolve();
                        } else {
                            browser.tabs.onUpdated.addListener(listener);
                        }
                    });
                    // we need to wait for the compose windows to load the content script
                    //setTimeout(() => browser.tabs.sendMessage(reply_tab.id, { command: "insertText", text: paragraphsHtmlString, tabId: reply_tab.id }), 500);
                    setTimeout(async () => await replaceBody(reply_tab.id, paragraphsHtmlString), 500);
                    return true;
                });
                break;
            case 'compose_reloadBody':
                modified_html = await getOriginalBody(message.tabId);
                await setBody(message.tabId, original_html);
                await setBody(message.tabId, modified_html);
                break;
            case 'reload_menus':
                await menus.reload();
                taLog.log("[ThunderAI] Reloaded menus");
                break;
            case 'shortcut_do_prompt':
                taLog.log("Executing shortcut, promptId: " + message.promptId);
                menus.executeMenuAction(message.promptId);
                break;
            default:
                break;
        }
    }
    // Return false if the message was not handled by this listener.
    return false;
});


async function openChatGPT(promptText, action, curr_tabId, prompt_name = '', do_custom_text = 0) {
    let prefs = await browser.storage.sync.get(prefs_default);
    taLog.changeDebug(prefs.do_debug);
    prefs = checkScreenDimensions(prefs);
    //console.log(">>>>>>>>>>>>>>>> prefs: " + JSON.stringify(prefs));
    taLog.log("[ThunderAI] Prompt length: " + promptText.length);
    if(promptText.length > 30000 ){
        // Prompt too long for ChatGPT
        browser.tabs.sendMessage(curr_tabId, { command: "promptTooLong" });
        return;
    }

    switch(prefs.connection_type){
        case 'chatgpt_web':

        let rand_call_id = '_chatgptweb_' + generateCallID();

        // We are using the ChatGPT web interface
        let newWindow = await browser.windows.create({
            url: "https://chatgpt.com?call_id=" + rand_call_id,
            type: "popup",
            width: prefs.chatgpt_win_width,
            height: prefs.chatgpt_win_height
        });

        let newWindowId = newWindow.id;
        let createdTab = newWindow.tabs[0];

        const listener = async (message, sender, sendResponse) => {

            if (message.command === "chatgpt_web_ready_" + rand_call_id) {

                taLog.log("[ThunderAI] ChatGPT web interface script started...");

                let pre_script = `let mztaWinId = `+ newWindowId +`;
                let mztaStatusPageDesc="`+ browser.i18n.getMessage("prefs_status_page") +`";
                let mztaForceCompletionDesc="`+ browser.i18n.getMessage("chatgpt_force_completion") +`";
                let mztaForceCompletionTitle="`+ browser.i18n.getMessage("chatgpt_force_completion_title") +`";
                let mztaDoCustomText=`+ do_custom_text +`;
                let mztaPromptName="[`+ i18nConditionalGet(prompt_name) +`]";
                `;

                taLog.log("Waiting 1 sec");
                await new Promise(resolve => setTimeout(resolve, 1000));
                taLog.log("Waiting 1 sec done");
                
                await browser.tabs.executeScript(createdTab.id, { code: pre_script + mzta_script, matchAboutBlank: false });
                let mailMessage = await browser.messageDisplay.getDisplayedMessage(curr_tabId);
                let mailMessageId = -1;
                if(mailMessage) mailMessageId = mailMessage.id;
                browser.tabs.sendMessage(createdTab.id, { command: "chatgpt_send", prompt: promptText, action: action, tabId: curr_tabId, mailMessageId: mailMessageId});
                taLog.log('[ChatGPT Web] Connection succeded!');
                taLog.log("[ThunderAI] ChatGPT Web script injected successfully");
                browser.runtime.onMessage.removeListener(listener);
            }
        }

        browser.runtime.onMessage.addListener(listener);
        break;  // chatgpt_web - END

    case 'chatgpt_api':
        // We are using the ChatGPT API

        let rand_call_id2 = '_openai_' + generateCallID();

        await browser.windows.create({
            url: browser.runtime.getURL('api_webchat/index.html?llm='+prefs.connection_type+'&call_id='+rand_call_id2),
            type: "popup",
            width: prefs.chatgpt_win_width,
            height: prefs.chatgpt_win_height
        });

        const listener2 = async (message, sender, sendResponse) => {

            if (message.command === "openai_api_ready_"+rand_call_id2) {

                let newWindow2 = await browser.windows.get(message.window_id, {populate: true});
                let createdTab2 = newWindow2.tabs[0];

                let mailMessage = await browser.messageDisplay.getDisplayedMessage(curr_tabId);
                let mailMessageId2 = -1;
                if(mailMessage) mailMessageId2 = mailMessage.id;

                // check if the config is present, or give a message error
                if (prefs.chatgpt_api_key == '') {
                    browser.tabs.sendMessage(createdTab2.id, { command: "api_error", error: browser.i18n.getMessage('chatgpt_empty_apikey')});
                    return;
                }
                if (prefs.chatgpt_model == '') {
                    browser.tabs.sendMessage(createdTab2.id, { command: "api_error", error: browser.i18n.getMessage('chatgpt_empty_model')});
                    return;
                }

                browser.tabs.sendMessage(createdTab2.id, { command: "api_send", prompt: promptText, action: action, tabId: curr_tabId, mailMessageId: mailMessageId2, do_custom_text: do_custom_text});
                taLog.log('[OpenAI ChatGPT] Connection succeded!');
                browser.runtime.onMessage.removeListener(listener2);
            }
        }

        browser.runtime.onMessage.addListener(listener2);

        break;  // chatgpt_api - END

        case 'ollama_api':
            // We are using the Ollama API

            taLog.log("Ollama API window opening...");

            let rand_call_id3 = '_ollama_' + generateCallID();

            await browser.windows.create({
                url: browser.runtime.getURL('api_webchat/index.html?llm='+prefs.connection_type+'&call_id='+rand_call_id3),
                type: "popup",
                width: prefs.chatgpt_win_width,
                height: prefs.chatgpt_win_height
            });

            const listener3 = async (message, sender, sendResponse) => {

                if (message.command === "ollama_api_ready_"+rand_call_id3) {
                    taLog.log("Ollama API window ready.");
                    taLog.log("message.window_id: " + message.window_id)
                    let newWindow3 = await browser.windows.get(message.window_id, {populate: true});
                    let createdTab3 = newWindow3.tabs[0];
                    taLog.log(">>>>>> createdTab3.id: " + createdTab3.id)
                    let mailMessage3 = await browser.messageDisplay.getDisplayedMessage(curr_tabId);
                    let mailMessageId3 = -1;
                    if(mailMessage3) mailMessageId3 = mailMessage3.id;
                    taLog.log(">>>>>> mailMessageId3: " + mailMessageId3)
            
                    // check if the config is present, or give a message error
                    if (prefs.ollama_host == '') {
                        await browser.tabs.sendMessage(createdTab3.id, { command: "api_error", error: browser.i18n.getMessage('ollama_empty_host')});
                        return;
                    }
                    if (prefs.ollama_model == '') {
                        await browser.tabs.sendMessage(createdTab3.id, { command: "api_error", error: browser.i18n.getMessage('ollama_empty_model')});
                        return;
                    }

                    await browser.tabs.sendMessage(createdTab3.id, { command: "api_send", prompt: promptText, action: action, tabId: curr_tabId, mailMessageId: mailMessageId3, do_custom_text: do_custom_text});
                    taLog.log('[Ollama API] Connection succeded!');
                    browser.runtime.onMessage.removeListener(listener3);
                }
            }

            browser.runtime.onMessage.addListener(listener3);

            break;  // ollama_api - END

            case 'openai_comp_api':
                // We are using the OpenAI Comp API
        
                let rand_call_id4 = '_openai_comp_api_' + generateCallID();
        
                await browser.windows.create({
                    url: browser.runtime.getURL('api_webchat/index.html?llm='+prefs.connection_type+'&call_id='+rand_call_id4),
                    type: "popup",
                    width: prefs.chatgpt_win_width,
                    height: prefs.chatgpt_win_height
                });
        
                const listener4 = async (message, sender, sendResponse) => {
                    //console.log(">>>>>>>>>>>>>> message: " + JSON.stringify(message));
                    if (message.command === "openai_comp_api_ready_"+rand_call_id4) {
        
                        let newWindow4 = await browser.windows.get(message.window_id, {populate: true});
                        let createdTab4 = newWindow4.tabs[0];
        
                        let mailMessage = await browser.messageDisplay.getDisplayedMessage(curr_tabId);
                        let mailMessageId4 = -1;
                        if(mailMessage) mailMessageId4 = mailMessage.id;
        
                        // check if the config is present, or give a message error
                        if (prefs.chatgpt_api_key == '') {
                            browser.tabs.sendMessage(createdTab4.id, { command: "api_error", error: browser.i18n.getMessage('OpenAIComp_empty_host')});
                            return;
                        }
                        if (prefs.chatgpt_model == '') {
                            browser.tabs.sendMessage(createdTab4.id, { command: "api_error", error: browser.i18n.getMessage('OpenAIComp_empty_model')});
                            return;
                        }
        
                        browser.tabs.sendMessage(createdTab4.id, { command: "api_send", prompt: promptText, action: action, tabId: curr_tabId, mailMessageId: mailMessageId4, do_custom_text: do_custom_text});
                        taLog.log('[OpenAI Comp API] Connection succeded!');
                        browser.runtime.onMessage.removeListener(listener4);
                    }
                }
        
                browser.runtime.onMessage.addListener(listener4);
        
                break;  // openai_comp_api
    }
}

function checkScreenDimensions(prefs){
    let width = window.screen.width - 50;
    let height = window.screen.height - 50;

    if(prefs.chatgpt_win_height > height) prefs.chatgpt_win_height = height - 50;
    if(prefs.chatgpt_win_width > width) prefs.chatgpt_win_width = width - 50;
    
    return prefs;
}

// Menus handling
const menus = new mzta_Menus(openChatGPT);
menus.loadMenus();