import { z } from 'zod'
import { router, memberProcedure, adminProcedure } from '../trpc'
import { auth } from '@/lib/auth'
import { sendInviteEmail } from '@/lib/email'

const MemberInput = z.object({
  name: z.string().min(2),
  betrieb: z.string().min(2),
  sparte: z.string().min(2),
  ort: z.string().min(2),
  telefon: z.string().optional(),
  email: z.string().email(),
  status: z.enum(['aktiv', 'ruhend', 'ausgetreten']).default('aktiv'),
  istAusbildungsbetrieb: z.boolean().default(false),
  seit: z.number().int().min(1900).max(2100).optional(),
})

export const membersRouter = router({
  /**
   * List all members in the user's org
   */
  list: memberProcedure
    .input(
      z.object({
        search: z.string().optional(),
        status: z.enum(['aktiv', 'ruhend', 'ausgetreten']).optional(),
        ausbildungsbetrieb: z.boolean().optional(),
      })
    )
    .query(async ({ ctx, input }) => {
      const members = await ctx.prisma.member.findMany({
        where: {
          orgId: ctx.orgId,
          ...(input.status && { status: input.status }),
          ...(input.ausbildungsbetrieb !== undefined && {
            istAusbildungsbetrieb: input.ausbildungsbetrieb,
          }),
          ...(input.search && {
            OR: [
              { name: { contains: input.search, mode: 'insensitive' } },
              { betrieb: { contains: input.search, mode: 'insensitive' } },
              { ort: { contains: input.search, mode: 'insensitive' } },
              { sparte: { contains: input.search, mode: 'insensitive' } },
            ],
          }),
        },
        orderBy: { name: 'asc' },
      })
      return members
    }),

  /**
   * Get a single member by ID
   */
  byId: memberProcedure
    .input(z.object({ id: z.string() }))
    .query(async ({ ctx, input }) => {
      const member = await ctx.prisma.member.findFirst({
        where: { id: input.id, orgId: ctx.orgId },
      })
      if (!member) throw new Error('Member not found')
      return member
    }),

  /**
   * Create a new member (admin only)
   */
  create: adminProcedure.input(MemberInput).mutation(async ({ ctx, input }) => {
    const member = await ctx.prisma.member.create({
      data: {
        ...input,
        orgId: ctx.orgId,
      },
    })
    return member
  }),

  /**
   * Create member + send invite email (admin only)
   */
  invite: adminProcedure
    .input(MemberInput)
    .mutation(async ({ ctx, input }) => {
      // 1. Create member record
      const member = await ctx.prisma.member.create({
        data: { ...input, orgId: ctx.orgId },
      })

      // 2. Create/get User via better-auth admin
      try {
        await auth.api.createUser({
          body: {
            name: input.name,
            email: input.email,
            role: 'user',
            password: undefined,
          },
        })
      } catch {
        // User may already exist — that's ok
      }

      // 3. Send magic link
      const org = await ctx.prisma.organization.findUniqueOrThrow({
        where: { id: ctx.orgId },
      })
      await sendInviteEmail({
        to: input.email,
        memberName: input.name,
        orgName: org.name,
        apiUrl: process.env.BETTER_AUTH_URL!,
      })

      return member
    }),

  /**
   * Update member (admin only)
   */
  update: adminProcedure
    .input(z.object({ id: z.string(), data: MemberInput.partial() }))
    .mutation(async ({ ctx, input }) => {
      const member = await ctx.prisma.member.updateMany({
        where: { id: input.id, orgId: ctx.orgId },
        data: input.data,
      })
      return member
    }),

  /**
   * Send/resend invite to existing member (admin only)
   */
  resendInvite: adminProcedure
    .input(z.object({ memberId: z.string() }))
    .mutation(async ({ ctx, input }) => {
      const member = await ctx.prisma.member.findFirstOrThrow({
        where: { id: input.memberId, orgId: ctx.orgId },
      })
      const org = await ctx.prisma.organization.findUniqueOrThrow({
        where: { id: ctx.orgId },
      })
      await sendInviteEmail({
        to: member.email,
        memberName: member.name,
        orgName: org.name,
        apiUrl: process.env.BETTER_AUTH_URL!,
      })
      return { success: true }
    }),

  /**
   * Get own member profile
   */
  me: memberProcedure.query(async ({ ctx }) => {
    const member = await ctx.prisma.member.findFirst({
      where: { userId: ctx.session.user.id, orgId: ctx.orgId },
      include: { org: true },
    })
    return member
  }),
})