import { parseGGUFQuantLabel } from "./gguf.js";
import type { ModelData } from "./model-data.js";
import type { PipelineType } from "./pipelines.js";
import { stringifyMessages } from "./snippets/common.js";
import { getModelInputSnippet } from "./snippets/inputs.js";
import type { ChatCompletionInputMessage } from "./tasks/index.js";

export interface LocalAppSnippet {
	/**
	 * Title of the snippet
	 */
	title: string;
	/**
	 * Optional setup guide
	 */
	setup?: string;
	/**
	 * Content (or command) to be run
	 */
	content: string | string[];
}

/**
 * Elements configurable by a local app.
 */
export type LocalApp = {
	/**
	 * Name that appears in buttons
	 */
	prettyLabel: string;
	/**
	 * Link to get more info about a local app (website etc)
	 */
	docsUrl: string;
	/**
	 * main category of app
	 */
	mainTask: PipelineType;
	/**
	 * Whether to display a pill "macOS-only"
	 */
	macOSOnly?: boolean;

	comingSoon?: boolean;
	/**
	 * IMPORTANT: function to figure out whether to display the button on a model page's main "Use this model" dropdown.
	 */
	displayOnModelPage: (model: ModelData) => boolean;
} & (
	| {
			/**
			 * If the app supports deeplink, URL to open.
			 */
			deeplink: (model: ModelData, filepath?: string) => URL;
	  }
	| {
			/**
			 * And if not (mostly llama.cpp), snippet to copy/paste in your terminal
			 * Support the placeholder {{GGUF_FILE}} that will be replaced by the gguf file path or the list of available files.
			 * Support the placeholder {{QUANT_TAG}} that will be replaced by the list of available quant tags or will be removed if there are no multiple quant files in a same repo.
			 */
			snippet: (model: ModelData, filepath?: string) => string | string[] | LocalAppSnippet | LocalAppSnippet[];
	  }
);

function isAwqModel(model: ModelData): boolean {
	return model.config?.quantization_config?.quant_method === "awq";
}

function isGptqModel(model: ModelData): boolean {
	return model.config?.quantization_config?.quant_method === "gptq";
}

function isAqlmModel(model: ModelData): boolean {
	return model.config?.quantization_config?.quant_method === "aqlm";
}

function isMarlinModel(model: ModelData): boolean {
	return model.config?.quantization_config?.quant_method === "marlin";
}

function isTransformersModel(model: ModelData): boolean {
	return model.tags.includes("transformers");
}

function isTgiModel(model: ModelData): boolean {
	return model.tags.includes("text-generation-inference");
}

function isLlamaCppGgufModel(model: ModelData) {
	return !!model.gguf?.context_length;
}

function isVllmModel(model: ModelData): boolean {
	return (
		(isAwqModel(model) ||
			isGptqModel(model) ||
			isAqlmModel(model) ||
			isMarlinModel(model) ||
			isLlamaCppGgufModel(model) ||
			isTransformersModel(model)) &&
		(model.pipeline_tag === "text-generation" || model.pipeline_tag === "image-text-to-text")
	);
}

function isDockerModelRunnerModel(model: ModelData): boolean {
	return isLlamaCppGgufModel(model) || isVllmModel(model);
}

function isAmdRyzenModel(model: ModelData) {
	return model.tags.includes("ryzenai-hybrid") || model.tags.includes("ryzenai-npu");
}

function isMlxModel(model: ModelData) {
	return model.tags.includes("mlx");
}

function getQuantTag(filepath?: string): string {
	const defaultTag = ":{{QUANT_TAG}}";

	if (!filepath) {
		return defaultTag;
	}

	const quantLabel = parseGGUFQuantLabel(filepath);
	return quantLabel ? `:${quantLabel}` : defaultTag;
}

const snippetLlamacpp = (model: ModelData, filepath?: string): LocalAppSnippet[] => {
	const serverCommand = (binary: string) => {
		const snippet = [
			"# Start a local OpenAI-compatible server with a web UI:",
			`${binary} -hf ${model.id}${getQuantTag(filepath)}`,
		];
		return snippet.join("\n");
	};
	const cliCommand = (binary: string) => {
		const snippet = ["# Run inference directly in the terminal:", `${binary} -hf ${model.id}${getQuantTag(filepath)}`];
		return snippet.join("\n");
	};
	return [
		{
			title: "Install from brew",
			setup: "brew install llama.cpp",
			content: [serverCommand("llama-server"), cliCommand("llama-cli")],
		},
		{
			title: "Install from WinGet (Windows)",
			setup: "winget install llama.cpp",
			content: [serverCommand("llama-server"), cliCommand("llama-cli")],
		},
		{
			title: "Use pre-built binary",
			setup: [
				// prettier-ignore
				"# Download pre-built binary from:",
				"# https://github.com/ggerganov/llama.cpp/releases",
			].join("\n"),
			content: [serverCommand("./llama-server"), cliCommand("./llama-cli")],
		},
		{
			title: "Build from source code",
			setup: [
				"git clone https://github.com/ggerganov/llama.cpp.git",
				"cd llama.cpp",
				"cmake -B build",
				"cmake --build build -j --target llama-server llama-cli",
			].join("\n"),
			content: [serverCommand("./build/bin/llama-server"), cliCommand("./build/bin/llama-cli")],
		},
		{
			title: "Use Docker",
			content: snippetDockerModelRunner(model, filepath),
		},
	];
};

const snippetNodeLlamaCppCli = (model: ModelData, filepath?: string): LocalAppSnippet[] => {
	const tagName = getQuantTag(filepath);
	return [
		{
			title: "Chat with the model",
			content: `npx -y node-llama-cpp chat hf:${model.id}${tagName}`,
		},
		{
			title: "Estimate the model compatibility with your hardware",
			content: `npx -y node-llama-cpp inspect estimate hf:${model.id}${tagName}`,
		},
	];
};

const snippetOllama = (model: ModelData, filepath?: string): string => {
	return `ollama run hf.co/${model.id}${getQuantTag(filepath)}`;
};

const snippetLocalAI = (model: ModelData, filepath?: string): LocalAppSnippet[] => {
	const command = (binary: string) =>
		["# Load and run the model:", `${binary} huggingface://${model.id}/${filepath ?? "{{GGUF_FILE}}"}`].join("\n");
	return [
		{
			title: "Install from binary",
			setup: "curl https://localai.io/install.sh | sh",
			content: command("local-ai run"),
		},
		{
			title: "Use Docker images",
			setup: [
				// prettier-ignore
				"# Pull the image:",
				"docker pull localai/localai:latest-cpu",
			].join("\n"),
			content: command(
				"docker run -p 8080:8080 --name localai -v $PWD/models:/build/models localai/localai:latest-cpu",
			),
		},
	];
};

const snippetVllm = (model: ModelData): LocalAppSnippet[] => {
	const messages = getModelInputSnippet(model) as ChatCompletionInputMessage[];

	const isMistral = model.tags.includes("mistral-common");
	const mistralFlags = isMistral
		? " --tokenizer_mode mistral --config_format mistral --load_format mistral --tool-call-parser mistral --enable-auto-tool-choice"
		: "";

	const setup = isMistral
		? [
				"# Install vLLM from pip:",
				"pip install vllm",
				"# Install mistral-common:",
				"pip install --upgrade mistral-common",
			].join("\n")
		: ["# Install vLLM from pip:", "pip install vllm"].join("\n");

	const serverCommand = `# Start the vLLM server:
vllm serve "${model.id}"${mistralFlags}`;

	const runCommandInstruct = `# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \\
	-H "Content-Type: application/json" \\
	--data '{
		"model": "${model.id}",
		"messages": ${stringifyMessages(messages, {
			indent: "\t\t",
			attributeKeyQuotes: true,
			customContentEscaper: (str) => str.replace(/'/g, "'\\''"),
		})}
	}'`;
	const runCommandNonInstruct = `# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/completions" \\
	-H "Content-Type: application/json" \\
	--data '{
		"model": "${model.id}",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'`;
	const runCommand = model.tags.includes("conversational") ? runCommandInstruct : runCommandNonInstruct;

	return [
		{
			title: "Install from pip and serve model",
			setup: setup,
			content: [serverCommand, runCommand],
		},
		{
			title: "Use Docker",
			content: snippetDockerModelRunner(model),
		},
	];
};
const snippetSglang = (model: ModelData): LocalAppSnippet[] => {
	const messages = getModelInputSnippet(model) as ChatCompletionInputMessage[];

	const setup = ["# Install SGLang from pip:", "pip install sglang"].join("\n");
	const serverCommand = `# Start the SGLang server:
python3 -m sglang.launch_server \\
    --model-path "${model.id}" \\
    --host 0.0.0.0 \\
    --port 30000`;
	const dockerCommand = `docker run --gpus all \\
    --shm-size 32g \\
    -p 30000:30000 \\
    -v ~/.cache/huggingface:/root/.cache/huggingface \\
    --env "HF_TOKEN=<secret>" \\
    --ipc=host \\
    lmsysorg/sglang:latest \\
    python3 -m sglang.launch_server \\
        --model-path "${model.id}" \\
        --host 0.0.0.0 \\
        --port 30000`;
	const runCommandInstruct = `# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \\
	-H "Content-Type: application/json" \\
	--data '{
		"model": "${model.id}",
		"messages": ${stringifyMessages(messages, {
			indent: "\t\t",
			attributeKeyQuotes: true,
			customContentEscaper: (str) => str.replace(/'/g, "'\\''"),
		})}
	}'`;
	const runCommandNonInstruct = `# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \\
	-H "Content-Type: application/json" \\
	--data '{
		"model": "${model.id}",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'`;
	const runCommand = model.tags.includes("conversational") ? runCommandInstruct : runCommandNonInstruct;

	return [
		{
			title: "Install from pip and serve model",
			setup: setup,
			content: [serverCommand, runCommand],
		},
		{
			title: "Use Docker images",
			setup: dockerCommand,
			content: [runCommand],
		},
	];
};
const snippetTgi = (model: ModelData): LocalAppSnippet[] => {
	const runCommand = [
		"# Call the server using curl:",
		`curl -X POST "http://localhost:8000/v1/chat/completions" \\`,
		`	-H "Content-Type: application/json" \\`,
		`	--data '{`,
		`		"model": "${model.id}",`,
		`		"messages": [`,
		`			{"role": "user", "content": "What is the capital of France?"}`,
		`		]`,
		`	}'`,
	];
	return [
		{
			title: "Use Docker images",
			setup: [
				"# Deploy with docker on Linux:",
				`docker run --gpus all \\`,
				`	-v ~/.cache/huggingface:/root/.cache/huggingface \\`,
				` 	-e HF_TOKEN="<secret>" \\`,
				`	-p 8000:80 \\`,
				`	ghcr.io/huggingface/text-generation-inference:latest \\`,
				`	--model-id ${model.id}`,
			].join("\n"),
			content: [runCommand.join("\n")],
		},
	];
};

const snippetMlxLm = (model: ModelData): LocalAppSnippet[] => {
	const openaiCurl = [
		"# Calling the OpenAI-compatible server with curl",
		`curl -X POST "http://localhost:8000/v1/chat/completions" \\`,
		`   -H "Content-Type: application/json" \\`,
		`   --data '{`,
		`     "model": "${model.id}",`,
		`     "messages": [`,
		`       {"role": "user", "content": "Hello"}`,
		`     ]`,
		`   }'`,
	];

	return [
		{
			title: "Generate or start a chat session",
			setup: ["# Install MLX LM", "uv tool install mlx-lm"].join("\n"),
			content: [
				...(model.tags.includes("conversational")
					? ["# Interactive chat REPL", `mlx_lm.chat --model "${model.id}"`]
					: ["# Generate some text", `mlx_lm.generate --model "${model.id}" --prompt "Once upon a time"`]),
			].join("\n"),
		},
		...(model.tags.includes("conversational")
			? [
					{
						title: "Run an OpenAI-compatible server",
						setup: ["# Install MLX LM", "uv tool install mlx-lm"].join("\n"),
						content: ["# Start the server", `mlx_lm.server --model "${model.id}"`, ...openaiCurl].join("\n"),
					},
				]
			: []),
	];
};

const snippetPi = (model: ModelData, filepath?: string): LocalAppSnippet[] => {
	const quantTag = getQuantTag(filepath);
	const modelName = model.id.split("/").pop() ?? model.id;

	const modelsJson = JSON.stringify(
		{
			providers: {
				"llama-cpp": {
					baseUrl: "http://localhost:8080/v1",
					api: "openai-completions",
					apiKey: "none",
					models: [{ id: modelName }],
				},
			},
		},
		null,
		2,
	);

	return [
		{
			title: "Start the llama.cpp server",
			setup: "# Install llama.cpp:\nbrew install llama.cpp",
			content: `# Start a local OpenAI-compatible server:\nllama-server -hf ${model.id}${quantTag} --jinja`,
		},
		{
			title: "Configure the model in Pi",
			setup: "# Install Pi:\nnpm install -g @mariozechner/pi-coding-agent",
			content: `# Add to ~/.pi/agent/models.json:\n${modelsJson}`,
		},
		{
			title: "Run Pi",
			content: `# Start Pi in your project directory:\npi`,
		},
	];
};

const snippetDockerModelRunner = (model: ModelData, filepath?: string): string => {
	// Only add quant tag for GGUF models, not safetensors
	const quantTag = isLlamaCppGgufModel(model) ? getQuantTag(filepath) : "";
	return `docker model run hf.co/${model.id}${quantTag}`;
};

const snippetLemonade = (model: ModelData, filepath?: string): LocalAppSnippet[] => {
	const tagName = getQuantTag(filepath);
	const modelName = model.id.includes("/") ? model.id.split("/")[1] : model.id;

	// Get recipe according to model type
	let simplifiedModelName: string;
	let recipe: string;
	let checkpoint: string;
	let requirements: string;
	if (model.tags.some((tag) => ["ryzenai-npu", "ryzenai-hybrid"].includes(tag))) {
		recipe = model.tags.includes("ryzenai-npu") ? "oga-npu" : "oga-hybrid";
		checkpoint = model.id;
		requirements = " (requires RyzenAI 300 series)";
		simplifiedModelName = modelName.split("-awq-")[0];
		simplifiedModelName += recipe === "oga-npu" ? "-NPU" : "-Hybrid";
	} else {
		recipe = "llamacpp";
		checkpoint = `${model.id}${tagName}`;
		requirements = "";
		simplifiedModelName = modelName;
	}

	return [
		{
			title: "Pull the model",
			setup: "# Download Lemonade from https://lemonade-server.ai/",
			content: [
				`lemonade-server pull user.${simplifiedModelName} --checkpoint ${checkpoint} --recipe ${recipe}`,
				"# Note: If you installed from source, use the lemonade-server-dev command instead.",
			].join("\n"),
		},
		{
			title: `Run and chat with the model${requirements}`,
			content: `lemonade-server run user.${simplifiedModelName}`,
		},
		{
			title: "List all available models",
			content: "lemonade-server list",
		},
	];
};

/**
 * Add your new local app here.
 *
 * This is open to new suggestions and awesome upcoming apps.
 *
 * /!\ IMPORTANT
 *
 * If possible, you need to support deeplinks and be as cross-platform as possible.
 *
 * Ping the HF team if we can help with anything!
 */
export const LOCAL_APPS = {
	"llama.cpp": {
		prettyLabel: "llama.cpp",
		docsUrl: "https://github.com/ggerganov/llama.cpp",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		snippet: snippetLlamacpp,
	},
	"node-llama-cpp": {
		prettyLabel: "node-llama-cpp",
		docsUrl: "https://node-llama-cpp.withcat.ai",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		snippet: snippetNodeLlamaCppCli,
	},
	vllm: {
		prettyLabel: "vLLM",
		docsUrl: "https://docs.vllm.ai",
		mainTask: "text-generation",
		displayOnModelPage: isVllmModel,
		snippet: snippetVllm,
	},
	sglang: {
		prettyLabel: "SGLang",
		docsUrl: "https://docs.sglang.io",
		mainTask: "text-generation",
		displayOnModelPage: (model: ModelData) =>
			(isAwqModel(model) ||
				isGptqModel(model) ||
				isAqlmModel(model) ||
				isMarlinModel(model) ||
				isTransformersModel(model)) &&
			(model.pipeline_tag === "text-generation" || model.pipeline_tag === "image-text-to-text"),
		snippet: snippetSglang,
	},
	"mlx-lm": {
		prettyLabel: "MLX LM",
		docsUrl: "https://github.com/ml-explore/mlx-lm",
		mainTask: "text-generation",
		displayOnModelPage: (model) => model.pipeline_tag === "text-generation" && isMlxModel(model),
		snippet: snippetMlxLm,
	},
	tgi: {
		prettyLabel: "TGI",
		docsUrl: "https://huggingface.co/docs/text-generation-inference/",
		mainTask: "text-generation",
		displayOnModelPage: isTgiModel,
		snippet: snippetTgi,
	},
	lmstudio: {
		prettyLabel: "LM Studio",
		docsUrl: "https://lmstudio.ai",
		mainTask: "text-generation",
		displayOnModelPage: (model) => isLlamaCppGgufModel(model) || isMlxModel(model),
		deeplink: (model, filepath) =>
			new URL(`lmstudio://open_from_hf?model=${model.id}${filepath ? `&file=${filepath}` : ""}`),
	},
	localai: {
		prettyLabel: "LocalAI",
		docsUrl: "https://github.com/mudler/LocalAI",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		snippet: snippetLocalAI,
	},
	jan: {
		prettyLabel: "Jan",
		docsUrl: "https://jan.ai",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		deeplink: (model) => new URL(`jan://models/huggingface/${model.id}`),
	},
	backyard: {
		prettyLabel: "Backyard AI",
		docsUrl: "https://backyard.ai",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		deeplink: (model) => new URL(`https://backyard.ai/hf/model/${model.id}`),
	},
	sanctum: {
		prettyLabel: "Sanctum",
		docsUrl: "https://sanctum.ai",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		deeplink: (model) => new URL(`sanctum://open_from_hf?model=${model.id}`),
	},
	jellybox: {
		prettyLabel: "Jellybox",
		docsUrl: "https://jellybox.com",
		mainTask: "text-generation",
		displayOnModelPage: (model) =>
			isLlamaCppGgufModel(model) ||
			(model.library_name === "diffusers" &&
				model.tags.includes("safetensors") &&
				(model.pipeline_tag === "text-to-image" || model.tags.includes("lora"))),
		deeplink: (model) => {
			if (isLlamaCppGgufModel(model)) {
				return new URL(`jellybox://llm/models/huggingface/LLM/${model.id}`);
			} else if (model.tags.includes("lora")) {
				return new URL(`jellybox://image/models/huggingface/ImageLora/${model.id}`);
			} else {
				return new URL(`jellybox://image/models/huggingface/Image/${model.id}`);
			}
		},
	},
	msty: {
		prettyLabel: "Msty",
		docsUrl: "https://msty.app",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		deeplink: (model) => new URL(`msty://models/search/hf/${model.id}`),
	},
	recursechat: {
		prettyLabel: "RecurseChat",
		docsUrl: "https://recurse.chat",
		mainTask: "text-generation",
		macOSOnly: true,
		displayOnModelPage: isLlamaCppGgufModel,
		deeplink: (model) => new URL(`recursechat://new-hf-gguf-model?hf-model-id=${model.id}`),
	},
	drawthings: {
		prettyLabel: "Draw Things",
		docsUrl: "https://drawthings.ai",
		mainTask: "text-to-image",
		macOSOnly: true,
		displayOnModelPage: (model) =>
			model.library_name === "diffusers" && (model.pipeline_tag === "text-to-image" || model.tags.includes("lora")),
		deeplink: (model) => {
			if (model.tags.includes("lora")) {
				return new URL(`https://drawthings.ai/import/diffusers/pipeline.load_lora_weights?repo_id=${model.id}`);
			} else {
				return new URL(`https://drawthings.ai/import/diffusers/pipeline.from_pretrained?repo_id=${model.id}`);
			}
		},
	},
	diffusionbee: {
		prettyLabel: "DiffusionBee",
		docsUrl: "https://diffusionbee.com",
		mainTask: "text-to-image",
		macOSOnly: true,
		displayOnModelPage: (model) => model.library_name === "diffusers" && model.pipeline_tag === "text-to-image",
		deeplink: (model) => new URL(`https://diffusionbee.com/huggingface_import?model_id=${model.id}`),
	},
	joyfusion: {
		prettyLabel: "JoyFusion",
		docsUrl: "https://joyfusion.app",
		mainTask: "text-to-image",
		macOSOnly: true,
		displayOnModelPage: (model) =>
			model.tags.includes("coreml") && model.tags.includes("joyfusion") && model.pipeline_tag === "text-to-image",
		deeplink: (model) => new URL(`https://joyfusion.app/import_from_hf?repo_id=${model.id}`),
	},
	ollama: {
		prettyLabel: "Ollama",
		docsUrl: "https://ollama.com",
		mainTask: "text-generation",
		displayOnModelPage: isLlamaCppGgufModel,
		snippet: snippetOllama,
	},
	"docker-model-runner": {
		prettyLabel: "Docker Model Runner",
		docsUrl: "https://docs.docker.com/ai/model-runner/",
		mainTask: "text-generation",
		displayOnModelPage: isDockerModelRunnerModel,
		snippet: snippetDockerModelRunner,
	},
	lemonade: {
		prettyLabel: "Lemonade",
		docsUrl: "https://lemonade-server.ai",
		mainTask: "text-generation",
		displayOnModelPage: (model) => isLlamaCppGgufModel(model) || isAmdRyzenModel(model),
		snippet: snippetLemonade,
	},
	pi: {
		prettyLabel: "Pi",
		docsUrl: "https://github.com/badlogic/pi-mono",
		mainTask: "text-generation",
		displayOnModelPage: (model) => isLlamaCppGgufModel(model) && !!model.gguf?.chat_template?.includes("tools"),
		snippet: snippetPi,
	},
} satisfies Record<string, LocalApp>;

export type LocalAppKey = keyof typeof LOCAL_APPS;