import { expect, type Page, type Route, test } from '@playwright/test'

interface EntityField {
  id: number
  name: string
  identifier: string
  type: string
  targetEntityId?: number
  relationshipType?: string
}

interface EntityDefinition {
  id: number
  name: string
  identifier: string
  fields: EntityField[]
}

async function useAdminSession (page: Page) {
  await page.addInitScript(() => {
    sessionStorage.setItem('bolts-session', JSON.stringify({
      username: 'admin',
      role: 'admin',
      token: 'admin-token',
    }))
  })
}

function formValues (route: Route) {
  return Object.fromEntries(new URLSearchParams(route.request().postData() ?? ''))
}

test('only admins can access entity configuration', async ({ page }) => {
  await page.addInitScript(() => {
    sessionStorage.setItem('bolts-session', JSON.stringify({
      username: 'member',
      role: 'user',
      token: 'user-token',
    }))
  })

  await page.goto('/admin/entities')

  await expect(page).toHaveURL('/')
  await expect(page.getByRole('heading', { name: 'Entity Configuration' })).not.toBeVisible()
})

test('admin can add, edit, and remove an entity and its fields', async ({ page }) => {
  const entities: EntityDefinition[] = []
  let nextEntityId = 1
  let nextFieldId = 1

  await useAdminSession(page)
  await page.route('**/api/entity-definitions**', async route => {
    const request = route.request()
    const url = new URL(request.url())
    const segments = url.pathname.split('/').filter(Boolean)
    const entityId = Number(segments[2])
    const fieldId = Number(segments[4])
    const entity = entities.find(item => item.id === entityId)

    if (request.method() === 'GET') {
      await route.fulfill({ json: entities })
    } else if (request.method() === 'POST' && segments.at(-1) === 'entity-definitions') {
      const values = formValues(route)
      const created = { id: nextEntityId++, name: values.name, identifier: values.identifier, fields: [] }
      entities.push(created)
      await route.fulfill({ status: 201, json: created })
    } else if (request.method() === 'PATCH' && segments.length === 3 && entity) {
      entity.name = formValues(route).name
      entity.identifier = formValues(route).identifier
      await route.fulfill({ json: entity })
    } else if (request.method() === 'DELETE' && segments.length === 3 && entity) {
      entities.splice(entities.indexOf(entity), 1)
      await route.fulfill({ status: 204 })
    } else if (request.method() === 'POST' && segments.at(-1) === 'fields' && entity) {
      const values = formValues(route)
      const created = {
        id: nextFieldId++,
        name: values.name,
        identifier: values.identifier,
        type: values.type,
        ...(values.targetEntityId ? { targetEntityId: Number(values.targetEntityId) } : {}),
        ...(values.relationshipType ? { relationshipType: values.relationshipType } : {}),
      }
      entity.fields.push(created)
      await route.fulfill({ status: 201, json: created })
    } else if (request.method() === 'PATCH' && entity) {
      const field = entity.fields.find(item => item.id === fieldId)!
      Object.assign(field, formValues(route))
      await route.fulfill({ json: field })
    } else if (request.method() === 'DELETE' && entity) {
      const index = entity.fields.findIndex(item => item.id === fieldId)
      entity.fields.splice(index, 1)
      await route.fulfill({ status: 204 })
    } else {
      await route.fulfill({ status: 404 })
    }
  })

  await page.goto('/admin/entities')
  await expect(page.getByRole('heading', { name: 'Entity Configuration' })).toBeVisible()
  await expect(page.getByRole('link', { name: 'Entity Configuration' })).toBeVisible()

  await page.getByLabel('Entity name', { exact: true }).fill('Société & Company')
  await expect(page.getByLabel('Entity identifier', { exact: true })).toHaveValue('societeCompany')
  await page.getByLabel('Entity identifier', { exact: true }).fill('business')
  await page.getByRole('button', { name: 'Add entity' }).click()
  await expect(page.getByRole('heading', { name: 'Société & Company' })).toBeVisible()
  await expect(page.getByText('business', { exact: true })).toBeVisible()

  await page.getByRole('button', { name: 'Edit entity' }).click()
  const entityEditForm = page.getByRole('button', { name: 'Save entity' }).locator('..')
  await entityEditForm.getByLabel('Entity name', { exact: true }).fill('MyOrganization')
  await expect(entityEditForm.getByLabel('Entity identifier')).toHaveValue('myOrganization')
  await entityEditForm.getByLabel('Entity name', { exact: true }).fill('Organization')
  await entityEditForm.getByRole('button', { name: 'Save entity' }).click()
  await expect(page.getByRole('heading', { name: 'Organization' })).toBeVisible()

  await page.getByLabel('New field').fill('Website')
  await expect(page.getByLabel('Field identifier')).toHaveValue('website')
  await page.getByLabel('Field identifier').fill('websiteUrl')
  await page.getByLabel('Field type').selectOption('EMAIL')
  await page.getByRole('button', { name: 'Add field' }).click()
  await expect(page.getByText('Website', { exact: true })).toBeVisible()
  await expect(page.locator('.type-badge')).toHaveText('Email')

  await page.getByRole('button', { name: 'Edit field' }).click()
  const fieldEditForm = page.getByRole('button', { name: 'Save field' }).locator('..')
  await fieldEditForm.getByLabel('Field name').fill('Annual revenue')
  await expect(fieldEditForm.getByLabel('Field identifier')).toHaveValue('annualRevenue')
  await fieldEditForm.getByLabel('Field type').selectOption('NUMBER')
  await fieldEditForm.getByRole('button', { name: 'Save field' }).click()
  await expect(page.getByText('Annual revenue')).toBeVisible()
  await expect(page.locator('.type-badge')).toHaveText('Number')

  page.on('dialog', dialog => dialog.accept())
  await page.getByRole('button', { name: 'Remove field' }).click()
  await expect(page.getByText('Annual revenue')).not.toBeVisible()

  await page.getByLabel('Entity name', { exact: true }).fill('Contact')
  await page.getByRole('button', { name: 'Add entity' }).click()

  const organization = page.locator('.entity-card').filter({
    has: page.getByRole('heading', { name: 'Organization' }),
  })
  const organizationFieldForm = organization.getByRole('form', { name: 'Add field to Organization' })
  await organizationFieldForm.getByLabel('New field').fill('Primary contact')
  await organizationFieldForm.getByLabel('Field type').selectOption('RELATIONSHIP')
  await organizationFieldForm.getByLabel('Related entity').selectOption({ label: 'Contact' })
  await organizationFieldForm.getByLabel('Relationship type').selectOption('ONE_TO_ONE')
  await organizationFieldForm.getByRole('button', { name: 'Add field' }).click()
  await expect(organization.locator('.type-badge').filter({ hasText: 'Relationship' })).toBeVisible()
  await expect(organization.getByText('Contact · One to one')).toBeVisible()

  await organizationFieldForm.getByLabel('New field').fill('Account owner')
  await organizationFieldForm.getByLabel('Field type').selectOption('USER')
  await organizationFieldForm.getByRole('button', { name: 'Add field' }).click()
  await expect(organization.locator('.type-badge').filter({ hasText: 'User reference' })).toBeVisible()
  await expect(organization.getByText('Built-in User entity')).toBeVisible()

  await organization.getByRole('button', { name: 'Remove entity' }).click()
  await expect(page.getByRole('heading', { name: 'Organization' })).not.toBeVisible()

  const contact = page.locator('.entity-card').filter({
    has: page.getByRole('heading', { name: 'Contact' }),
  })
  await contact.getByRole('button', { name: 'Remove entity' }).click()
  await expect(page.getByText('No entities yet.')).toBeVisible()
})