import {
    saveSettingsDebounced,
    callPopup,
    setGenerationProgress,
    CLIENT_VERSION,
    getRequestHeaders,
} from "../script.js";
import { SECRET_KEYS, writeSecret } from "./secrets.js";
import { delay } from "./utils.js";
import { getDeviceInfo } from "./RossAscends-mods.js";
import { autoSelectInstructPreset } from "./instruct-mode.js";

export {
    horde_settings,
    generateHorde,
    checkHordeStatus,
    loadHordeSettings,
    adjustHordeGenerationParams,
    getHordeModels,
    MIN_AMOUNT_GEN,
}

let models = [];

let horde_settings = {
    models: [],
    auto_adjust_response_length: true,
    auto_adjust_context_length: false,
    trusted_workers_only: false,
};

const MAX_RETRIES = 200;
const CHECK_INTERVAL = 5000;
const MIN_AMOUNT_GEN = 16;
const getRequestArgs = () => ({
    method: "GET",
    headers: {
        "Client-Agent": CLIENT_VERSION,
    }
});

async function getWorkers() {
    const response = await fetch('https://horde.koboldai.net/api/v2/workers?type=text', getRequestArgs());
    const data = await response.json();
    return data;
}

function validateHordeModel() {
    let selectedModels = models.filter(m => horde_settings.models.includes(m.name));

    if (selectedModels.length === 0) {
        toastr.warning('No Horde model selected or the selected models are no longer available. Please choose another model');
        throw new Error('No Horde model available');
    }

    return selectedModels;
}

async function adjustHordeGenerationParams(max_context_length, max_length) {
    const workers = await getWorkers();
    let maxContextLength = max_context_length;
    let maxLength = max_length;
    let availableWorkers = [];
    let selectedModels = validateHordeModel();

    if (selectedModels.length === 0) {
        return { maxContextLength, maxLength };
    }

    for (const model of selectedModels) {
        for (const worker of workers) {
            if (model.cluster == worker.cluster && worker.models.includes(model.name)) {
                availableWorkers.push(worker);
            }
        }
    }

    //get the minimum requires parameters, lowest common value for all selected
    for (const worker of availableWorkers) {
        if (horde_settings.auto_adjust_context_length) {
            maxContextLength = Math.min(worker.max_context_length, maxContextLength);
        }
        if (horde_settings.auto_adjust_response_length) {
            maxLength = Math.min(worker.max_length, maxLength);
        }
    }

    return { maxContextLength, maxLength };
}

async function generateHorde(prompt, params, signal) {
    validateHordeModel();
    delete params.prompt;

    // No idea what these do
    params["n"] = 1;
    params["frmtadsnsp"] = false;
    params["frmtrmblln"] = false;
    params["frmtrmspch"] = false;
    params["frmttriminc"] = false;

    const payload = {
        "prompt": prompt,
        "params": params,
        "trusted_workers": horde_settings.trusted_workers_only,
        //"slow_workers": false,
        "models": horde_settings.models,
    };

    const response = await fetch("/generate_horde", {
        method: 'POST',
        headers: {
            ...getRequestHeaders(),
            "Client-Agent": CLIENT_VERSION,
        },
        body: JSON.stringify(payload)
    });

    if (!response.ok) {
        toastr.error(response.statusText, 'Horde generation failed');
        throw new Error(`Horde generation failed: ${response.statusText}`);
    }

    const responseJson = await response.json();

    if (responseJson.error) {
        const reason = responseJson.error?.message || 'Unknown error';
        toastr.error(reason, 'Horde generation failed');
        throw new Error(`Horde generation failed: ${reason}`);
    }

    const task_id = responseJson.id;
    let queue_position_first = null;
    console.log(`Horde task id = ${task_id}`);

    for (let retryNumber = 0; retryNumber < MAX_RETRIES; retryNumber++) {
        if (signal.aborted) {
            await fetch(`https://horde.koboldai.net/api/v2/generate/text/status/${task_id}`, {
                method: 'DELETE',
                headers: {
                    "Client-Agent": CLIENT_VERSION,
                }
            });
            throw new Error('Request aborted');
        }

        const statusCheckResponse = await fetch(`https://horde.koboldai.net/api/v2/generate/text/status/${task_id}`, getRequestArgs());

        const statusCheckJson = await statusCheckResponse.json();
        console.log(statusCheckJson);

        if (statusCheckJson.done && Array.isArray(statusCheckJson.generations) && statusCheckJson.generations.length) {
            setGenerationProgress(100);
            const generatedText = statusCheckJson.generations[0].text;
            const WorkerName = statusCheckJson.generations[0].worker_name;
            const WorkerModel = statusCheckJson.generations[0].model;
            console.log(generatedText);
            console.log(`Generated by Horde Worker: ${WorkerName} [${WorkerModel}]`);
            return { text: generatedText, workerName: `Generated by Horde worker: ${WorkerName} [${WorkerModel}]` };
        }
        else if (!queue_position_first) {
            queue_position_first = statusCheckJson.queue_position;
            setGenerationProgress(0);
        }
        else if (statusCheckJson.queue_position >= 0) {
            let queue_position = statusCheckJson.queue_position;
            const progress = Math.round(100 - (queue_position / queue_position_first * 100));
            setGenerationProgress(progress);
        }

        await delay(CHECK_INTERVAL);
    }

    callPopup('Horde request timed out. Try again', 'text');
    throw new Error('Horde timeout');
}

async function checkHordeStatus() {
    const response = await fetch('https://horde.koboldai.net/api/v2/status/heartbeat', getRequestArgs());
    return response.ok;
}

async function getHordeModels() {
    $('#horde_model').empty();
    const response = await fetch('https://horde.koboldai.net/api/v2/status/models?type=text', getRequestArgs());
    models = await response.json();

    for (const model of models) {
        const option = document.createElement('option');
        option.value = model.name;
        option.innerText = `${model.name} (ETA: ${model.eta}s, Queue: ${model.queued}, Workers: ${model.count})`;
        option.selected = horde_settings.models.includes(model.name);
        $('#horde_model').append(option);
    }

    // if previously selected is no longer available
    if (horde_settings.models.length && models.filter(m => horde_settings.models.includes(m.name)).length === 0) {
        horde_settings.models = [];
    }
}

function loadHordeSettings(settings) {
    if (settings.horde_settings) {
        Object.assign(horde_settings, settings.horde_settings);
    }

    $('#horde_auto_adjust_response_length').prop("checked", horde_settings.auto_adjust_response_length);
    $('#horde_auto_adjust_context_length').prop("checked", horde_settings.auto_adjust_context_length);
    $("#horde_trusted_workers_only").prop("checked", horde_settings.trusted_workers_only);
}

async function showKudos() {
    const response = await fetch('/horde_userinfo', {
        method: 'POST',
        headers: getRequestHeaders(),
    });

    if (!response.ok) {
        toastr.warning('Could not load user info from Horde. Please try again later.');
        return;
    }

    const data = await response.json();

    if (data.anonymous) {
        toastr.info('You are in anonymous mode. Set your personal Horde API key to see kudos.')
        return;
    }

    console.log('Horde user data', data);
    toastr.info(`Kudos: ${data.kudos}`, data.username);
}

jQuery(function () {
    $("#horde_model").on('mousedown change', async function (e) {
        horde_settings.models = $('#horde_model').val();
        console.log('Updated Horde models', horde_settings.models);

        // Try select instruct preset
        autoSelectInstructPreset(horde_settings.models.join(' '));
    });

    $("#horde_auto_adjust_response_length").on("input", function () {
        horde_settings.auto_adjust_response_length = !!$(this).prop("checked");
        saveSettingsDebounced();
    });

    $("#horde_auto_adjust_context_length").on("input", function () {
        horde_settings.auto_adjust_context_length = !!$(this).prop("checked");
        saveSettingsDebounced();
    });

    $("#horde_trusted_workers_only").on("input", function () {
        horde_settings.trusted_workers_only = !!$(this).prop("checked");
        saveSettingsDebounced();
    })

    $("#horde_api_key").on("input", async function () {
        const key = $(this).val().trim();
        await writeSecret(SECRET_KEYS.HORDE, key);
    });

    $("#horde_refresh").on("click", getHordeModels);
    $("#horde_kudos").on("click", showKudos);

    // Not needed on mobile
    const deviceInfo = getDeviceInfo();
    if (deviceInfo && deviceInfo.device.type === 'desktop') {
        $('#horde_model').select2({
            width: '100%',
            placeholder: 'Select Horde models',
            allowClear: true,
            closeOnSelect: false,
            templateSelection: function(data) {
                // Customize the pillbox text by shortening the full text
                return data.id;
            },
            templateResult: function(data) {
                // Return the full text for the dropdown
                return data.text;
            },
        });
    }
})