import { describe, it, expect } from 'vitest'
import { openDb } from '../src/db'
import { createClient } from '../src/repos-clients'
import { assignModule, createModule, setPrice } from '../src/repos-modules'
import {
  createRecurringPlan, listRecurringPlans, updateRecurringPlan, deactivateRecurringPlan,
} from '../src/repos-recurring'

function setup() {
  const db = openDb(':memory:')
  const c = createClient(db, 'u1', { name: 'Acme', stateCode: '32' })
  const m = createModule(db, 'u1', { code: 'CLOUD', name: 'Cloud Hosting', allowedKinds: ['monthly', 'yearly'] })
  setPrice(db, 'u1', { moduleId: m.id, kind: 'monthly', pricePaise: 2_000_00, effectiveFrom: '2026-04-01' })
  const cm = assignModule(db, 'u1', { clientId: c.id, moduleId: m.id, kind: 'monthly' })
  return { db, c, m, cm }
}

describe('recurring plans', () => {
  it('creates a plan, lists it, updates and deactivates with audit', () => {
    const { db, c, cm } = setup()
    const p = createRecurringPlan(db, 'u1', {
      clientId: c.id, clientModuleId: cm.id, cadence: 'monthly', nextRun: '2026-08-01', policy: 'auto',
    })
    expect(p.policy).toBe('auto')
    expect(p.amountPaise).toBeNull() // price resolves from the module at generation
    expect(listRecurringPlans(db, c.id)).toHaveLength(1)
    const up = updateRecurringPlan(db, 'u1', p.id, { amountPaise: 2_500_00 })
    expect(up.amountPaise).toBe(2_500_00)
    const off = deactivateRecurringPlan(db, 'u1', p.id)
    expect(off.active).toBe(false)
    const audits = db.prepare(`SELECT action FROM audit_log WHERE entity='recurring_plan'`).all()
    expect(audits.length).toBe(3) // create + update + deactivate
  })
  it('rejects a plan whose module has no price and no explicit amount', () => {
    const db = openDb(':memory:')
    const c = createClient(db, 'u1', { name: 'X', stateCode: '32' })
    const m = createModule(db, 'u1', { code: 'POS', name: 'POS', allowedKinds: ['yearly'] })
    const cm = assignModule(db, 'u1', { clientId: c.id, moduleId: m.id, kind: 'yearly' })
    expect(() => createRecurringPlan(db, 'u1', {
      clientId: c.id, clientModuleId: cm.id, cadence: 'yearly', nextRun: '2026-08-01',
    })).toThrow(/price/i)
  })
  it('rejects a client_module that belongs to another client', () => {
    const { db, cm } = setup()
    const other = createClient(db, 'u1', { name: 'Other', stateCode: '32' })
    expect(() => createRecurringPlan(db, 'u1', {
      clientId: other.id, clientModuleId: cm.id, cadence: 'monthly', nextRun: '2026-08-01', amountPaise: 100_00,
    })).toThrow(/client/i)
  })
})