import { redirect } from '@sveltejs/kit';
import type { PageServerLoad } from './$types';
import { db } from '$lib/server/db';
import { project, task, issue } from '$lib/server/db/schema';
import { desc, eq, sql } from 'drizzle-orm';

export const load: PageServerLoad = async (event) => {
	if (!event.locals.user) {
		throw redirect(302, '/auth/login');
	}

	const projects = await db
		.select({
			id: project.id,
			name: project.name,
			description: project.description,
			status: project.status,
			taskCount: sql<number>`(
				select count(*) from ${task} where ${task.projectId} = ${project.id}
			)`.mapWith(Number),
			doneCount: sql<number>`(
				select count(*) from ${task}
				where ${task.projectId} = ${project.id} and ${task.status} = 'done'
			)`.mapWith(Number),
			issueCount: sql<number>`(
				select count(*) from ${issue} where ${issue.projectId} = ${project.id}
			)`.mapWith(Number)
		})
		.from(project)
		.where(eq(project.ownerId, event.locals.user.id))
		.orderBy(desc(project.updatedAt));

	const normalizedProjects = projects.map((item) => ({
		...item,
		progress: item.taskCount ? Math.round((item.doneCount / item.taskCount) * 100) : 0
	}));

	const recentTasks = await db
		.select({
			id: task.id,
			title: task.title,
			status: task.status,
			priority: task.priority,
			projectId: task.projectId
		})
		.from(task)
		.innerJoin(project, eq(task.projectId, project.id))
		.where(eq(project.ownerId, event.locals.user.id))
		.orderBy(desc(task.updatedAt))
		.limit(5);

	const recentIssues = await db
		.select({
			id: issue.id,
			title: issue.title,
			state: issue.state,
			provider: issue.provider,
			projectId: issue.projectId
		})
		.from(issue)
		.innerJoin(project, eq(issue.projectId, project.id))
		.where(eq(project.ownerId, event.locals.user.id))
		.orderBy(desc(issue.updatedAt))
		.limit(5);

	return {
		user: event.locals.user,
		projects: normalizedProjects,
		recentTasks,
		recentIssues
	};
};