import { GraphQLClient } from 'graphql-request'

import type { Post } from './payload-types'

import payload from '../../packages/payload/src'
import { mapAsync } from '../../packages/payload/src/utilities/mapAsync'
import { initPayloadTest } from '../helpers/configHelpers'
import configPromise, { pointSlug, slug } from './config'

const title = 'title'

let client: GraphQLClient

describe('collections-graphql', () => {
  beforeAll(async () => {
    const { serverURL } = await initPayloadTest({ __dirname, init: { local: false } })
    const config = await configPromise
    const url = `${serverURL}${config.routes.api}${config.routes.graphQL}`
    client = new GraphQLClient(url)
  })

  afterAll(async () => {
    if (typeof payload.db.destroy === 'function') {
      await payload.db.destroy(payload)
    }
  })

  describe('CRUD', () => {
    let existingDoc: Post

    beforeEach(async () => {
      existingDoc = await createPost()
    })

    it('should create', async () => {
      const query = `mutation {
          createPost(data: {title: "${title}"}) {
          id
          title
        }
      }`
      const response = await client.request(query)
      const doc: Post = response.createPost

      expect(doc).toMatchObject({ title })
      expect(doc.id.length).toBeGreaterThan(0)
    })

    it('should create using graphql variables', async () => {
      const query = `mutation Create($title: String!) {
          createPost(data: {title: $title}) {
          id
          title
        }
      }`
      const response = await client.request(query, { title })
      const doc: Post = response.createPost

      expect(doc).toMatchObject({ title })
      expect(doc.id.length).toBeGreaterThan(0)
    })

    it('should read', async () => {
      const query = `query {
        Post(id: "${existingDoc.id}") {
          id
          title
        }
      }`
      const response = await client.request(query)
      const doc: Post = response.Post

      expect(doc).toMatchObject({ id: existingDoc.id, title })
    })

    it('should find', async () => {
      const query = `query {
        Posts {
          docs {
            id
            title
          }
        }
      }`
      const response = await client.request(query)
      const { docs } = response.Posts

      expect(docs).toContainEqual(expect.objectContaining({ id: existingDoc.id }))
    })

    it('should retain payload api', async () => {
      const query = `
        query {
          PayloadApiTestTwos {
            docs {
              payloadAPI
              relation {
                payloadAPI
              }
            }
          }
        }
      `

      const response = await client.request(query)
      const res = response.PayloadApiTestTwos

      expect(res.docs[0].relation.payloadAPI).toStrictEqual('GraphQL')
    })

    it('should update existing', async () => {
      const updatedTitle = 'updated title'

      const query = `mutation {
        updatePost(id: "${existingDoc.id}", data: { title: "${updatedTitle}"}) {
          id
          title
        }
      }`
      const response = await client.request(query)
      const doc: Post = response.updatePost

      expect(doc).toMatchObject({ id: existingDoc.id, title: updatedTitle })
    })

    it('should delete', async () => {
      const query = `mutation {
        deletePost(id: "${existingDoc.id}") {
          id
          title
        }
      }`
      const response = await client.request(query)
      const doc: Post = response.deletePost

      expect(doc).toMatchObject({ id: existingDoc.id })
    })
  })

  describe('Querying', () => {
    describe('Operators', () => {
      let post1: Post
      let post2: Post

      beforeEach(async () => {
        post1 = await createPost({ title: 'post1' })
        post2 = await createPost({ title: 'post2' })
      })

      it('equals', async () => {
        const query = `query {
        Posts(where:{title: {equals:"${post1.title}"}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(expect.objectContaining({ id: post1.id, title: post1.title }))
      })

      it('not_equals', async () => {
        const query = `query {
        Posts(where:{title: {not_equals:"${post1.title}"}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs[0]).toMatchObject({ id: post2.id, title: post2.title })
      })

      it('like', async () => {
        const postWithWords = await createPost({ title: 'the quick brown fox' })
        const query = `query {
        Posts(where:{title: {like:"${postWithWords.title?.split(' ')[1]}"}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs[0]).toMatchObject({ id: postWithWords.id, title: postWithWords.title })
      })

      it('contains', async () => {
        const query = `query {
        Posts(where:{title: {contains:"${post1.title?.slice(0, 4)}"}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(expect.objectContaining({ id: post1.id, title: post1.title }))
        expect(docs).toContainEqual(expect.objectContaining({ id: post2.id, title: post2.title }))
      })

      it('exists - true', async () => {
        const withDescription = await createPost({ description: 'description' })
        const query = `query {
        Posts(where:{description: {exists:true}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(
          expect.objectContaining({ id: withDescription.id, title: withDescription.title }),
        )
      })

      it('exists - false', async () => {
        const withDescription = await createPost({ description: 'description' })
        const query = `query {
        Posts(where:{description: {exists:false}}) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).not.toContainEqual(expect.objectContaining({ id: withDescription.id }))
        expect(docs).toContainEqual(expect.objectContaining({ id: post1.id }))
      })

      describe('numbers', () => {
        let numPost1: Post
        let numPost2: Post

        beforeEach(async () => {
          numPost1 = await createPost({ number: 1 })
          numPost2 = await createPost({ number: 2 })
        })

        it('greater_than', async () => {
          const query = `query {
          Posts(where:{number: {greater_than:1}}) {
            docs {
              id
              title
            }
          }
        }`

          const response = await client.request(query)
          const { docs } = response.Posts

          expect(docs).toContainEqual(expect.objectContaining({ id: numPost2.id }))
        })

        it('greater_than_equal', async () => {
          const query = `query {
          Posts(where:{number: {greater_than_equal:1}}) {
            docs {
              id
              title
            }
          }
        }`

          const response = await client.request(query)
          const { docs } = response.Posts

          expect(docs).toContainEqual(expect.objectContaining({ id: numPost1.id }))
          expect(docs).toContainEqual(expect.objectContaining({ id: numPost2.id }))
        })

        it('less_than', async () => {
          const query = `query {
          Posts(where:{number: {less_than:2}}) {
            docs {
              id
              title
            }
          }
        }`

          const response = await client.request(query)
          const { docs } = response.Posts

          expect(docs).toContainEqual(expect.objectContaining({ id: numPost1.id }))
        })

        it('less_than_equal', async () => {
          const query = `query {
          Posts(where:{number: {less_than_equal:2}}) {
            docs {
              id
              title
            }
          }
        }`

          const response = await client.request(query)
          const { docs } = response.Posts

          expect(docs).toContainEqual(expect.objectContaining({ id: numPost1.id }))
          expect(docs).toContainEqual(expect.objectContaining({ id: numPost2.id }))
        })
      })

      it('or', async () => {
        const query = `query {
        Posts(
          where: {OR: [{ title: { equals: "${post1.title}" } }, { title: { equals: "${post2.title}" } }]
        }) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(expect.objectContaining({ id: post1.id }))
        expect(docs).toContainEqual(expect.objectContaining({ id: post2.id }))
      })

      it('or - 1 result', async () => {
        const query = `query {
        Posts(
          where: {OR: [{ title: { equals: "${post1.title}" } }, { title: { equals: "nope" } }]
        }) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(expect.objectContaining({ id: post1.id }))
        expect(docs).not.toContainEqual(expect.objectContaining({ id: post2.id }))
      })

      it('and', async () => {
        const specialPost = await createPost({ description: 'special-123123' })

        const query = `query {
        Posts(
          where: {
            AND: [
              { title: { equals: "${specialPost.title}" } }
              { description: { equals: "${specialPost.description}" } }
            ]
        }) {
          docs {
            id
            title
          }
        }
      }`

        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(expect.objectContaining({ id: specialPost.id }))
      })

      describe('near', () => {
        const point = [10, 20]
        const [lat, lng] = point

        it('should return a document near a point', async () => {
          const nearQuery = `
            query {
              Points(
                where: {
                  point: {
                    near: [${lat + 0.01}, ${lng + 0.01}, 10000]
                  }
                }
              ) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(nearQuery)
          const { docs } = response.Points

          expect(docs).toHaveLength(1)
        })

        it('should not return a point far away', async () => {
          const nearQuery = `
            query {
              Points(
                where: {
                  point: {
                    near: [${lng + 1}, ${lat - 1}, 5000]
                  }
                }
              ) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(nearQuery)
          const { docs } = response.Points

          expect(docs).toHaveLength(0)
        })

        it('should sort find results by nearest distance', async () => {
          // creating twice as many records as we are querying to get a random sample
          await mapAsync([...Array(10)], async () => {
            // setTimeout used to randomize the creation timestamp
            setTimeout(async () => {
              await payload.create({
                collection: pointSlug,
                data: {
                  // only randomize longitude to make distance comparison easy
                  point: [Math.random(), 0],
                },
              })
            }, Math.random())
          })

          const nearQuery = `
            query {
              Points(
                where: {
                  point: {
                    near: [0, 0, 100000, 0]
                  }
                },
                limit: 5
              ) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(nearQuery)
          const { docs } = response.Points

          let previous = 0
          docs.forEach(({ point: coordinates }) => {
            // The next document point should always be greater than the one before
            expect(previous).toBeLessThanOrEqual(coordinates[0])
              ;[previous] = coordinates
          })
        })
      })

      describe('within', () => {
        type Point = [number, number]
        const polygon: Point[] = [
          [9.0, 19.0], // bottom-left
          [9.0, 21.0], // top-left
          [11.0, 21.0], // top-right
          [11.0, 19.0], // bottom-right
          [9.0, 19.0], // back to starting point to close the polygon
        ]

        it('should return a document with the point inside the polygon', async () => {
          const query = `
            query {
              Points(
                where: {
                  point: {
                    within: {
                      type: "Polygon",
                      coordinates: ${JSON.stringify([polygon])}
                    }
                  }
              }) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(query)
          const { docs } = response.Points

          expect(docs).toHaveLength(1)
          expect(docs[0].point).toEqual([10, 20])
        })

        it('should not return a document with the point outside the polygon', async () => {
          const reducedPolygon = polygon.map((vertex) => vertex.map((coord) => coord * 0.1))
          const query = `
            query {
              Points(
                where: {
                  point: {
                    within: {
                      type: "Polygon",
                      coordinates: ${JSON.stringify([reducedPolygon])}
                    }
                  }
              }) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(query)
          const { docs } = response.Points

          expect(docs).toHaveLength(0)
        })
      })

      describe('intersects', () => {
        type Point = [number, number]
        const polygon: Point[] = [
          [9.0, 19.0], // bottom-left
          [9.0, 21.0], // top-left
          [11.0, 21.0], // top-right
          [11.0, 19.0], // bottom-right
          [9.0, 19.0], // back to starting point to close the polygon
        ]

        it('should return a document with the point intersecting the polygon', async () => {
          const query = `
            query {
              Points(
                where: {
                  point: {
                    intersects: {
                      type: "Polygon",
                      coordinates: ${JSON.stringify([polygon])}
                    }
                  }
              }) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(query)
          const { docs } = response.Points

          expect(docs).toHaveLength(1)
          expect(docs[0].point).toEqual([10, 20])
        })

        it('should not return a document with the point not intersecting a smaller polygon', async () => {
          const reducedPolygon = polygon.map((vertex) => vertex.map((coord) => coord * 0.1))
          const query = `
            query {
              Points(
                where: {
                  point: {
                    within: {
                      type: "Polygon",
                      coordinates: ${JSON.stringify([reducedPolygon])}
                    }
                  }
              }) {
                docs {
                  id
                  point
                }
              }
            }`

          const response = await client.request(query)
          const { docs } = response.Points

          expect(docs).toHaveLength(0)
        })
      })

      it('can query deeply nested fields within rows, tabs, collapsibles', async () => {
        const withNestedField = await createPost({ D1: { D2: { D3: { D4: 'nested message' } } } })
        const query = `{
          Posts(where: { D1__D2__D3__D4: { equals: "nested message" } }) {
            docs {
              id
              D1 {
                D2 {
                  D3 {
                    D4
                  }
                }
              }
            }
          }
        }`
        const response = await client.request(query)
        const { docs } = response.Posts

        expect(docs).toContainEqual(
          expect.objectContaining({
            id: withNestedField.id,
            D1: { D2: { D3: { D4: 'nested message' } } },
          }),
        )
      })
    })

    describe('relationships', () => {
      it('should query on relationships with custom IDs', async () => {
        const query = `query {
          Posts(where: { title: { equals: "has custom ID relation" }}) {
            docs {
              id
              title
              relationToCustomID {
                id
              }
            }
            totalDocs
          }
        }`

        const response = await client.request(query)
        const { docs, totalDocs } = response.Posts

        expect(totalDocs).toStrictEqual(1)
        expect(docs[0].relationToCustomID.id).toStrictEqual(1)
      })
    })
  })

  describe('Error Handler', () => {
    it('should return have an array of errors when making a bad request', async () => {
      let error

      // language=graphQL
      const query = `query {
        Posts(where: { title: { exists: true }}) {
          docs {
            badFieldName
          }
        }
      }`
      await client.request(query).catch((err) => {
        error = err
      })
      expect(Array.isArray(error.response.errors)).toBe(true)
      expect(typeof error.response.errors[0].message).toBe('string')
    })

    it('should return have an array of errors when failing to pass validation', async () => {
      let error
      // language=graphQL
      const query = `mutation {
        createPost(data: {min: 1}) {
          id
          min
          createdAt
          updatedAt
        }
      }`

      await client.request(query).catch((err) => {
        error = err
      })
      expect(Array.isArray(error.response.errors)).toBe(true)
      expect(error.response.errors[0].message).toEqual('The following field is invalid: min')
      expect(typeof error.response.errors[0].locations).toBeDefined()
    })

    it('should return have an array of errors when failing multiple mutations', async () => {
      let error
      // language=graphQL
      const query = `mutation createTest {
        test1:createUser(data: { email: "test@test.com", password: "test" }) {
          email
        }

        test2:createUser(data: { email: "test2@test.com", password: "" }) {
          email
        }

        test3:createUser(data: { email: "test@test.com", password: "test" }) {
          email
        }

        test4:createUser(data: { email: "", password: "test" }) {
          email
        }
      }`

      await client.request(query).catch((err) => {
        error = err
      })

      expect(Array.isArray(error.response.errors)).toBe(true)

      expect(Array.isArray(error.response.errors[0].locations)).toEqual(true)
      expect(error.response.errors[0].message).toEqual('The following field is invalid: password')
      expect(error.response.errors[0].path[0]).toEqual('test2')
      expect(error.response.errors[0].extensions.name).toEqual('ValidationError')
      expect(error.response.errors[0].extensions.data[0].message).toEqual('No password was given')
      expect(error.response.errors[0].extensions.data[0].field).toEqual('password')

      expect(Array.isArray(error.response.errors[1].locations)).toEqual(true)
      expect(error.response.errors[1].message).toEqual('The following field is invalid: email')
      expect(error.response.errors[1].path[0]).toEqual('test3')
      expect(error.response.errors[1].extensions.name).toEqual('ValidationError')
      expect(error.response.errors[1].extensions.data[0].message).toEqual(
        'A user with the given email is already registered',
      )
      expect(error.response.errors[1].extensions.data[0].field).toEqual('email')

      expect(Array.isArray(error.response.errors[2].locations)).toEqual(true)
      expect(error.response.errors[2].message).toEqual('The following field is invalid: email')
      expect(error.response.errors[2].path[0]).toEqual('test4')
      expect(error.response.errors[2].extensions.name).toEqual('ValidationError')
      expect(error.response.errors[2].extensions.data[0].message).toEqual(
        'Please enter a valid email address.',
      )
      expect(error.response.errors[2].extensions.data[0].field).toEqual('email')
    })

    it('should return the minimum allowed information about internal errors', async () => {
      let error
      // language=graphQL
      const query = `query {
        QueryWithInternalError {
            text
        }
      }`

      await client.request(query).catch((err) => {
        error = err
      })

      expect(Array.isArray(error.response.errors)).toBe(true)
      expect(Array.isArray(error.response.errors[0].locations)).toEqual(true)
      expect(error.response.errors[0].message).toEqual('Something went wrong.')
      expect(error.response.errors[0].path[0]).toEqual('QueryWithInternalError')
      expect(error.response.errors[0].extensions.statusCode).toEqual(500)
      expect(error.response.errors[0].extensions.name).toEqual('Error')
    })
  })
})

async function createPost(overrides?: Partial<Post>) {
  const doc = await payload.create({
    collection: slug,
    data: { title: 'title', ...overrides },
  })
  return doc
}