import type { FastifyPluginAsync } from 'fastify'
import {
  CategoryCreateSchema,
  CategoryUpdateSchema,
  SupplierCreateSchema,
  SupplierUpdateSchema,
  PaginationSchema,
} from '@forte/shared/schemas'
import { CategoryService, SupplierService } from '../../services/inventory.service.js'

export const inventoryRoutes: FastifyPluginAsync = async (app) => {
  // --- Categories ---

  app.post('/categories', { preHandler: [app.authenticate, app.requirePermission('inventory.edit')] }, async (request, reply) => {
    const parsed = CategoryCreateSchema.safeParse(request.body)
    if (!parsed.success) {
      return reply.status(400).send({ error: { message: 'Validation failed', details: parsed.error.flatten(), statusCode: 400 } })
    }
    const category = await CategoryService.create(app.db, parsed.data)
    return reply.status(201).send(category)
  })

  app.get('/categories', { preHandler: [app.authenticate, app.requirePermission('inventory.view')] }, async (request, reply) => {
    const params = PaginationSchema.parse(request.query)
    const result = await CategoryService.list(app.db, params)
    return reply.send(result)
  })

  app.get('/categories/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.view')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const category = await CategoryService.getById(app.db, id)
    if (!category) return reply.status(404).send({ error: { message: 'Category not found', statusCode: 404 } })
    return reply.send(category)
  })

  app.patch('/categories/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.edit')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const parsed = CategoryUpdateSchema.safeParse(request.body)
    if (!parsed.success) {
      return reply.status(400).send({ error: { message: 'Validation failed', details: parsed.error.flatten(), statusCode: 400 } })
    }
    const category = await CategoryService.update(app.db, id, parsed.data)
    if (!category) return reply.status(404).send({ error: { message: 'Category not found', statusCode: 404 } })
    return reply.send(category)
  })

  app.delete('/categories/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.admin')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const category = await CategoryService.softDelete(app.db, id)
    if (!category) return reply.status(404).send({ error: { message: 'Category not found', statusCode: 404 } })
    return reply.send(category)
  })

  // --- Suppliers ---

  app.post('/suppliers', { preHandler: [app.authenticate, app.requirePermission('inventory.edit')] }, async (request, reply) => {
    const parsed = SupplierCreateSchema.safeParse(request.body)
    if (!parsed.success) {
      return reply.status(400).send({ error: { message: 'Validation failed', details: parsed.error.flatten(), statusCode: 400 } })
    }
    const supplier = await SupplierService.create(app.db, parsed.data)
    return reply.status(201).send(supplier)
  })

  app.get('/suppliers', { preHandler: [app.authenticate, app.requirePermission('inventory.view')] }, async (request, reply) => {
    const params = PaginationSchema.parse(request.query)
    const result = await SupplierService.list(app.db, params)
    return reply.send(result)
  })

  app.get('/suppliers/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.view')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const supplier = await SupplierService.getById(app.db, id)
    if (!supplier) return reply.status(404).send({ error: { message: 'Supplier not found', statusCode: 404 } })
    return reply.send(supplier)
  })

  app.patch('/suppliers/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.edit')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const parsed = SupplierUpdateSchema.safeParse(request.body)
    if (!parsed.success) {
      return reply.status(400).send({ error: { message: 'Validation failed', details: parsed.error.flatten(), statusCode: 400 } })
    }
    const supplier = await SupplierService.update(app.db, id, parsed.data)
    if (!supplier) return reply.status(404).send({ error: { message: 'Supplier not found', statusCode: 404 } })
    return reply.send(supplier)
  })

  app.delete('/suppliers/:id', { preHandler: [app.authenticate, app.requirePermission('inventory.admin')] }, async (request, reply) => {
    const { id } = request.params as { id: string }
    const supplier = await SupplierService.softDelete(app.db, id)
    if (!supplier) return reply.status(404).send({ error: { message: 'Supplier not found', statusCode: 404 } })
    return reply.send(supplier)
  })
}