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<!DOCTYPE html>
<html>

<head>
    <meta content="text/htmlcharset=utf-8" http-equiv="Content-Type" />
    <meta name="apple-mobile-web-app-capable" content="yes">
    <link rel="shortcut icon" href="candle.png">
    <link rel="apple-touch-icon" href="candle.png">
    <title>Candle Phi Rust/WASM</title>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet"
        href="https://cdn.jsdelivr.net/gh/highlightjs/[email protected]/build/styles/default.min.css" />
    <style>
        @import url("https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@200300400&family=Source+Sans+3:wght@100200300400500600700800900&display=swap");

        html,
        body {
            font-family: "Source Sans 3", sans-serif;
        }

        code,
        output,
        select,
        pre {
            font-family: "Source Code Pro", monospace;
        }
    </style>
    <style type="text/tailwindcss">
        .link { @apply underline hover:text-blue-500 hover:no-underline; }
        </style>
    <script src="https://cdn.tailwindcss.com"></script>
    <script type="module">
        import snarkdown from "https://cdn.skypack.dev/snarkdown"
        import hljs from "https://cdn.skypack.dev/highlight.js"
        // models base url
        const MODELS = {
            phi_1_5_q4k: {
                base_url:
                    "https://huggingface.co/lmz/candle-quantized-phi/resolve/main/",
                model: "model-q4k.gguf",
                tokenizer: "tokenizer.json",
                config: "phi-1_5.json",
                quantized: true,
                seq_len: 2048,
                size: "800 MB",
            },
            phi_1_5_q80: {
                base_url:
                    "https://huggingface.co/lmz/candle-quantized-phi/resolve/main/",
                model: "model-q80.gguf",
                tokenizer: "tokenizer.json",
                config: "phi-1_5.json",
                quantized: true,
                seq_len: 2048,
                size: "1.51 GB",
            },
            phi_2_0_q4k: {
                base_url:
                    "https://huggingface.co/radames/phi-2-quantized/resolve/main/",
                model: [
                    "model-v2-q4k.gguf_aa.part",
                    "model-v2-q4k.gguf_ab.part",
                    "model-v2-q4k.gguf_ac.part",
                ],
                tokenizer: "tokenizer.json",
                config: "config.json",
                quantized: true,
                seq_len: 2048,
                size: "1.57GB",
            },
            puffin_phi_v2_q4k: {
                base_url:
                    "https://huggingface.co/lmz/candle-quantized-phi/resolve/main/",
                model: "model-puffin-phi-v2-q4k.gguf",
                tokenizer: "tokenizer-puffin-phi-v2.json",
                config: "puffin-phi-v2.json",
                quantized: true,
                seq_len: 2048,
                size: "798 MB",
            },
            puffin_phi_v2_q80: {
                base_url:
                    "https://huggingface.co/lmz/candle-quantized-phi/resolve/main/",
                model: "model-puffin-phi-v2-q80.gguf",
                tokenizer: "tokenizer-puffin-phi-v2.json",
                config: "puffin-phi-v2.json",
                quantized: true,
                seq_len: 2048,
                size: "1.50 GB",
            },
        }

        const phiWorker = new Worker("./phiWorker.js", {
            type: "module",
        })
        async function generateSequence(prompt, controller) {
            const getValue = (id) => document.querySelector(`#${id}`).value
            const modelID = getValue("model")
            const model = MODELS[modelID]
            const weightsURL =
                model.model instanceof Array
                    ? model.model.map((m) => model.base_url + m)
                    : model.base_url + model.model
            const tokenizerURL = model.base_url + model.tokenizer
            const configURL = model.base_url + model.config

            // const prompt = getValue("prompt").trim()
            const temperature = getValue("temperature")
            const topP = getValue("top-p")
            const repeatPenalty = getValue("repeat_penalty")
            const seed = getValue("seed")
            const maxSeqLen = getValue("max-seq")

            function updateStatus(data) {
                const outStatus = document.querySelector("#output-status")
                const outGen = document.querySelector("#output-generation")
                const outCounter = document.querySelector("#output-counter")

                switch (data.status) {
                    case "loading":
                        outStatus.hidden = false
                        outStatus.innerHTML = data.message.replaceAll("\n", "<br>\n")
                        outGen.hidden = true
                        outCounter.hidden = true
                        break
                    case "generating":
                        const { message, prompt, sentence, tokensSec, totalTime } = data
                        outStatus.hidden = true
                        outCounter.hidden = false
                        outGen.hidden = false
                        outGen.innerHTML = snarkdown(prompt + sentence).replaceAll('\n', '<br>\n')
                        outCounter.innerHTML = `${(totalTime / 1000).toFixed(
                            2
                        )}s (${tokensSec.toFixed(2)} tok/s)`
                        hljs.highlightAll()
                        break
                    case "complete":
                        outStatus.hidden = true
                        outGen.hidden = false
                        break
                }
            }

            function decodeHtml(html) {
                var txt = document.createElement('textarea')
                txt.innerHTML = html
                return txt.value
            }

            return new Promise((resolve, reject) => {
                let TEXT = document.querySelector('textarea#terminate')?.innerText
                if (TEXT === '') TEXT = decodeHtml(document.querySelector('textarea#terminate')?.innerHTML)
                phiWorker.postMessage({
                    weightsURL,
                    modelID,
                    tokenizerURL,
                    configURL,
                    quantized: model.quantized,
                    prompt,
                    temp: temperature,
                    top_p: topP,
                    repeatPenalty,
                    seed: seed,
                    maxSeqLen,
                    command: "start",
                    stuff: TEXT.split(',').map(e => e.trim())
                })

                const handleAbort = () => {
                    phiWorker.postMessage({ command: "abort" })
                }
                const handleMessage = (event) => {
                    const { status, error, message, prompt, sentence } = event.data
                    if (status) updateStatus(event.data)
                    if (error) {
                        phiWorker.removeEventListener("message", handleMessage)
                        reject(new Error(error))
                    }
                    if (status === "aborted") {
                        phiWorker.removeEventListener("message", handleMessage)
                        resolve(event.data)
                    }
                    if (status === "complete") {
                        phiWorker.removeEventListener("message", handleMessage)
                        resolve(event.data)
                    }
                }

                controller.signal.addEventListener("abort", handleAbort)
                phiWorker.addEventListener("message", handleMessage)
            })
        }

        const form = document.querySelector("#form")
        const prompt = document.querySelector("#prompt")
        const clearBtn = document.querySelector("#clear-btn")
        const runBtn = document.querySelector("#run")
        const modelSelect = document.querySelector("#model")
        let runController = new AbortController()
        let isRunning = false

        document.addEventListener("DOMContentLoaded", () => {
            for (const [id, model] of Object.entries(MODELS)) {
                const option = document.createElement("option")
                option.value = id
                option.innerText = `${id} (${model.size})`
                modelSelect.appendChild(option)
            }
            const query = new URLSearchParams(window.location.search)
            const modelID = query.get("model")
            if (modelID) {
                modelSelect.value = modelID
            } else {
                modelSelect.value = "phi_1_5_q4k"
            }
        })

        const TEMPLATES = { entries: () => [] }

        for (const [i, { title, prompt }] of TEMPLATES.entries()) {
            const div = document.createElement("div")
            const input = document.createElement("input")
            input.type = "radio"
            input.name = "task"
            input.id = `templates-${i}`
            input.classList.add("font-light", "cursor-pointer")
            input.value = prompt
            const label = document.createElement("label")
            label.htmlFor = `templates-${i}`
            label.classList.add("cursor-pointer")
            label.innerText = title
            div.appendChild(input)
            div.appendChild(label)
            promptTemplates.appendChild(div)
        }

        modelSelect.addEventListener("change", (e) => {
            const query = new URLSearchParams(window.location.search)
            query.set("model", e.target.value)
            window.history.replaceState(
                {},
                "",
                `${window.location.pathname}?${query}`
            )
            window.parent.postMessage({ queryString: "?" + query }, "*")
            const model = MODELS[e.target.value]
            document.querySelector("#max-seq").max = model.seq_len
            document.querySelector("#max-seq").nextElementSibling.value = 200
        })

        form.addEventListener("submit", async (e) => {
            e.preventDefault()
            if (isRunning) {
                stopRunning()
            } else {
                startRunning()
                await generateSequence(document.querySelector(`#prompt`).value, runController)
                stopRunning()
            }
        })

        function startRunning() {
            isRunning = true
            runBtn.textContent = "Stop"
        }

        function stopRunning() {
            runController.abort()
            runController = new AbortController()
            runBtn.textContent = "Run"
            isRunning = false
        }
        clearBtn.addEventListener("click", (e) => {
            e.preventDefault()
            prompt.value = ""
            clearBtn.classList.add("invisible")
            runBtn.disabled = true
            stopRunning()
        })
        prompt.addEventListener("input", (e) => {
            runBtn.disabled = false
            if (e.target.value.length > 0) {
                clearBtn.classList.remove("invisible")
            } else {
                clearBtn.classList.add("invisible")
            }
        })
    </script>
</head>

<body class="container max-w-4xl mx-auto p-4 text-gray-800">
    <main class="grid grid-cols-1 gap-8 relative">
        <span class="absolute text-5xl -ml-[1em]"> 🕯️ </span>
        <div>
            <h1 class="text-5xl font-bold">Candle Phi 1.5 / Phi 2.0</h1>
        </div>
        <div>
            <p class="text-m max-w-lg">
                <b>Note:</b>
                When first run, the app will download and cache the model, which could
                take a few minutes. The models are <b>~800MB</b> or <b>~1.57GB</b> in
                size.
            </p>
        </div>
        <div>
            <label for="model" class="font-medium">Models Options: </label>
            <select id="model" class="border-2 border-gray-500 rounded-md font-light"></select>
        </div>
        <form id="form" class="flex text-normal px-1 py-1 border border-gray-700 rounded-md items-center">
            <input type="submit" hidden />
            <textarea type="text" id="prompt" class="font-light text-lg w-full px-3 py-2 mx-1 resize-none outline-none"
                oninput="this.style.height = 0; this.style.height = this.scrollHeight + 'px'"
                placeholder="Add your prompt here..."></textarea>
            <button id="clear-btn">
                <svg fill="none" xmlns="http://www.w3.org/2000/svg" width="40" viewBox="0 0 70 40">
                    <path opacity=".5" d="M39 .2v40.2" stroke="#1F2937" />
                    <path d="M1.5 11.5 19 29.1m0-17.6L1.5 29.1" opacity=".5" stroke="#1F2937" stroke-width="2" />
                </svg>
            </button>
            <button id="run"
                class="bg-gray-700 hover:bg-gray-800 text-white font-normal py-2 w-16 rounded disabled:bg-gray-300 disabled:cursor-not-allowed">
                Run
            </button>
        </form>
        <details>
            <summary class="font-medium cursor-pointer">Advanced Options</summary>
            <div class="grid grid-cols-3 max-w-md items-center gap-3 py-3">
                <label class="text-sm font-medium" for="max-seq">Maximum length
                </label>
                <input type="range" id="max-seq" name="max-seq" min="1" max="2048" step="1" value="200"
                    oninput="this.nextElementSibling.value = Number(this.value)" />
                <output class="text-xs w-[50px] text-center font-light px-1 py-1 border border-gray-700 rounded-md">
                    200</output>
                <label class="text-sm font-medium" for="temperature">Temperature</label>
                <input type="range" id="temperature" name="temperature" min="0" max="2" step="0.01" value="0.50"
                    oninput="this.nextElementSibling.value = Number(this.value).toFixed(2)" />
                <output class="text-xs w-[50px] text-center font-light px-1 py-1 border border-gray-700 rounded-md">
                    0.50</output>
                <label class="text-sm font-medium" for="top-p">Top-p</label>
                <input type="range" id="top-p" name="top-p" min="0" max="1" step="0.01" value="1.00"
                    oninput="this.nextElementSibling.value = Number(this.value).toFixed(2)" />
                <output class="text-xs w-[50px] text-center font-light px-1 py-1 border border-gray-700 rounded-md">
                    1.00</output>
                <label class="text-sm font-medium" for="repeat_penalty">Repeat Penalty</label>
                <input type="range" id="repeat_penalty" name="repeat_penalty" min="1" max="2" step="0.01" value="1.10"
                    oninput="this.nextElementSibling.value = Number(this.value).toFixed(2)" />
                <output
                    class="text-xs w-[50px] text-center font-light px-1 py-1 border border-gray-700 rounded-md">1.10</output>
                <label class="text-sm font-medium" for="seed">Seed</label>
                <input type="number" id="seed" name="seed" value="299792458"
                    class="font-light border border-gray-700 text-right rounded-md p-2" />
                <button id="run"
                    onclick="document.querySelector('#seed').value = Math.floor(Math.random() * Number.MAX_SAFE_INTEGER)"
                    class="bg-gray-700 hover:bg-gray-800 text-white font-normal py-1 w-[50px] rounded disabled:bg-gray-300 disabled:cursor-not-allowed text-sm">
                    Rand
                </button>
                <label hidden class="text-sm font-medium" for="terminate">End tokens</label>
                <textarea hidden type="text" id="terminate"
                    class="font-light text-lg w-full px-3 py-2 mx-1 resize-none outline-none"
                    style="padding-left: -10px; border: 1px solid black; border-radius: 5px; width: 500px"
                    oninput="this.style.height = 0; this.style.height = this.scrollHeight + 'px'"
                    placeholder="Add your terminate tokens here, Separated by `, `"><|endoftext|>, <|user|>, <|system|>, <|assistant|></textarea>
            </div>
        </details>
        <div>
            <h3 class="font-medium">Generation:</h3>
            <div class="min-h-[250px] bg-slate-100 text-gray-500 p-4 rounded-md flex flex-col gap-2">
                <div id="output-counter" hidden class="ml-auto font-semibold grid-rows-1"></div>
                <p hidden id="output-generation" class="grid-rows-2 text-lg"></p>
                <span id="output-status" class="m-auto font-light">No output yet</span>
            </div>
        </div>
    </main>
</body>

</html>