import { desc, sql } from 'drizzle-orm'

export default defineEventHandler(() => {
  const db = useDb()
  const rows = db.select().from(tables.projects).orderBy(desc(tables.projects.updatedAt)).all()
  const stats = db.select({
    projectId: tables.chapters.projectId,
    total: sql<number>`count(*)`,
    approved: sql<number>`sum(case when ${tables.chapters.status} = 'approved' then 1 else 0 end)`,
    words: sql<number>`coalesce(sum((select word_count from chapter_versions v where v.id = ${tables.chapters.activeVersionId})), 0)`
  }).from(tables.chapters).groupBy(tables.chapters.projectId).all()
  return rows.map(p => ({
    id: p.id,
    title: p.title,
    description: p.description,
    updatedAt: p.updatedAt,
    stats: stats.find(s => s.projectId === p.id) ?? { total: 0, approved: 0, words: 0 },
    running: getActiveRun(p.id)
  }))
})