import { db } from "@dokploy/server/db";
import { ai } from "@dokploy/server/db/schema";
import { selectAIProvider } from "@dokploy/server/utils/ai/select-ai-provider";
import { TRPCError } from "@trpc/server";
import { generateText, Output } from "ai";
import { desc, eq } from "drizzle-orm";
import { z } from "zod";
import { IS_CLOUD } from "../constants";
import { findServerById } from "./server";
import { getWebServerSettings } from "./web-server-settings";

interface SuggestionItem {
	id: string;
	name: string;
	shortDescription: string;
	description: string;
}

interface SuggestionsOutput {
	suggestions: SuggestionItem[];
}

interface DockerOutput {
	dockerCompose: string;
	envVariables: Array<{ name: string; value: string }>;
	domains: Array<{ host: string; port: number; serviceName: string }>;
	configFiles?: Array<{ content: string; filePath: string }>;
}

export const getAiSettingsByOrganizationId = async (organizationId: string) => {
	const aiSettings = await db.query.ai.findMany({
		where: eq(ai.organizationId, organizationId),
		orderBy: desc(ai.createdAt),
	});
	return aiSettings;
};

export const getAiSettingById = async (aiId: string) => {
	const aiSetting = await db.query.ai.findFirst({
		where: eq(ai.aiId, aiId),
	});
	if (!aiSetting) {
		throw new TRPCError({
			code: "NOT_FOUND",
			message: "AI settings not found",
		});
	}
	return aiSetting;
};

export const saveAiSettings = async (organizationId: string, settings: any) => {
	const aiId = settings.aiId;

	return db
		.insert(ai)
		.values({
			aiId,
			organizationId,
			...settings,
		})
		.onConflictDoUpdate({
			target: ai.aiId,
			set: {
				...settings,
			},
		});
};

export const deleteAiSettings = async (aiId: string) => {
	return db.delete(ai).where(eq(ai.aiId, aiId));
};

interface Props {
	organizationId: string;
	aiId: string;
	input: string;
	serverId?: string | undefined;
}

export const suggestVariants = async ({
	organizationId: _organizationId,
	aiId,
	input,
	serverId,
}: Props) => {
	try {
		const aiSettings = await getAiSettingById(aiId);
		if (!aiSettings || !aiSettings.isEnabled) {
			throw new TRPCError({
				code: "NOT_FOUND",
				message: "AI features are not enabled for this configuration",
			});
		}

		const provider = selectAIProvider(aiSettings);
		const model = provider(aiSettings.model);

		let ip = "";
		if (!IS_CLOUD) {
			const settings = await getWebServerSettings();
			ip = settings?.serverIp || "";
		}

		if (serverId) {
			const server = await findServerById(serverId);
			ip = server.ipAddress;
		} else if (process.env.NODE_ENV === "development") {
			ip = "127.0.0.1";
		}

		const fullSchema = z.object({
			suggestions: z.array(
				z.object({
					id: z.string(),
					name: z.string(),
					shortDescription: z.string(),
					description: z.string(),
					dockerCompose: z.string(),
					envVariables: z.array(
						z.object({
							name: z.string(),
							value: z.string(),
						}),
					),
					domains: z.array(
						z.object({
							host: z.string(),
							port: z.number(),
							serviceName: z.string(),
						}),
					),
					configFiles: z
						.array(
							z.object({
								content: z.string(),
								filePath: z.string(),
							}),
						)
						.optional(),
				}),
			),
		});

		const result = await generateText({
			model,
			// @ts-ignore - Zod + AI SDK Output.object() causes excessively deep instantiation
			output: Output.object({ schema: fullSchema }),
			prompt: `
		    Act as advanced DevOps engineer. Analyze the user's request and generate up to 3 deployment suggestions, each with a complete docker compose configuration.

		    CRITICAL - Read the user's request carefully and follow the appropriate strategy:

		    Strategy A - If the user specifies a PARTICULAR APPLICATION/SERVICE (e.g., "deploy Chatwoot", "install sendingtk/chatwoot:develop", "setup Bitwarden"):
		    - Generate different deployment VARIANTS of that SAME application
		    - Each variant should be a different configuration (minimal, full stack, with different databases, development vs production, etc.)
		    - Example: For "Chatwoot" → "Chatwoot with PostgreSQL", "Chatwoot Development", "Chatwoot Full Stack"
		    - The name MUST include the specific application name the user mentioned

		    Strategy B - If the user describes a GENERAL NEED or USE CASE (e.g., "personal blog", "project management tool", "chat application"):
		    - Suggest different open source projects that fulfill that need
		    - Each suggestion should be a different tool/platform that solves the same problem
		    - Example: For "personal blog" → "WordPress", "Ghost", "Hugo with Nginx"
		    - The name should be the actual project name

		    Return your response as a JSON object with this structure:
		    {
		      "suggestions": [
		        {
		          "id": "project-or-variant-slug",
		          "name": "Project Name or Variant Name",
		          "shortDescription": "Brief one-line description",
		          "description": "Detailed description of the project/variant",
		          "dockerCompose": "yaml string here",
		          "envVariables": [{"name": "VAR_NAME", "value": "example_value"}],
		          "domains": [{"host": "domain.com", "port": 3000, "serviceName": "service"}],
		          "configFiles": [{"content": "file content", "filePath": "path/to/file"}]
		        }
		      ]
		    }

		    Suggestion Rules:
		    1. Use slug format for the id field (lowercase, hyphenated)
		    2. The description field should ONLY contain plain text — no code snippets or installation instructions
		    3. The shortDescription should be a single-line summary focusing on key technologies or differentiators
		    4. All suggestions should be installable in docker and have docker compose support
		    5. Provide variety in your suggestions - different complexity levels, tech stacks, or approaches

		    Docker Compose Rules:
		    1. Use placeholder like \${VARIABLE_NAME-default} for generated variables in the docker-compose.yml
		    2. Use complex values for passwords/secrets variables
		    3. Don't set container_name field in services
		    4. Don't set version field in the docker compose
		    5. Don't set ports like 'ports: 3000:3000', use 'ports: "3000"' instead
		    6. If a service depends on a database or other service, INCLUDE that service in the docker-compose
		    7. Make sure all required services are defined in the docker-compose

		    Docker Image Rules (CRITICAL):
		    1. ALWAYS use 'image:' field, NEVER use 'build:' field
		    2. NEVER use 'build: .' or any build directive - we don't have local Dockerfiles
		    3. Use images from Docker Hub or other public registries (e.g., docker.io, ghcr.io, quay.io)
		    4. For dependencies (databases, redis, etc.), use official images (e.g., postgres:16, redis:7, etc.)
		    5. Always specify image tags - avoid using 'latest' tag, use specific versions when possible
		    6. Examples of correct image usage:
		       - image: sendingtk/chatwoot:develop
		       - image: postgres:16-alpine
		       - image: redis:7-alpine
		    7. Examples of INCORRECT usage (DO NOT USE):
		       - build: .
		       - build: ./app
		       - build:
		           context: .
		           dockerfile: Dockerfile

		    Volume Mounting and Configuration Rules:
		    1. DO NOT create configuration files unless the service CANNOT work without them
		    2. Most services can work with just environment variables - USE THEM FIRST
		    3. If and ONLY IF a config file is absolutely required:
		       - Keep it minimal with only critical settings
		       - Use "../files/" prefix for all mounts
		       - Format: "../files/folder:/container/path"
		    4. DO NOT add configuration files for default configs, env-configurable settings, or proxy/routing configs

		    Environment Variables Rules:
		    1. For the envVariables array, provide ACTUAL example values, not placeholders
		    2. Use realistic example values (e.g., "admin@example.com" for emails, "mypassword123" for passwords)
		    3. DO NOT use \${VARIABLE_NAME-default} syntax in the envVariables values
		    4. ONLY include environment variables that are actually used in the docker-compose
		    5. Every environment variable referenced in the docker-compose MUST have a corresponding entry in envVariables

		    Domain Rules - For each service that needs to be exposed to the internet:
		    1. Define a domain with:
		       - host: {service-name}-{random-3-chars-hex}-${ip ? ip.replaceAll(".", "-") : ""}.traefik.me
		       - port: the internal port the service runs on
		       - serviceName: the name of the service in the docker-compose
		    2. Make sure the service is properly configured to work with the specified port

		    User's request: ${input}
		  `,
		});

		const output = result.output as
			| { suggestions: (SuggestionItem & DockerOutput)[] }
			| undefined;

		if (!output?.suggestions?.length) {
			throw new TRPCError({
				code: "NOT_FOUND",
				message: "No suggestions found",
			});
		}

		return output.suggestions.filter((s) => s.dockerCompose);
	} catch (error) {
		console.error("Error in suggestVariants:", error);
		throw error;
	}
};