import request from 'supertest'
import { describe, expect, it } from 'vitest'
import { createCaStudioApi } from '../src/caStudioApi.js'
import { createTestDb } from './testDb.js'

describe('CA Studio API', () => {
  it('seeds a useful shelf of elementary 1D CA rules', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    await request(app)
      .get('/api/ca/engines?dimensions=1&states=2')
      .expect(200)
      .expect((response) => {
        const rules = response.body
          .filter((engine: { engine_kind: string }) => engine.engine_kind === 'elementary-1d')
          .map((engine: { default_params: { ruleId?: string } }) => engine.default_params.ruleId)

        expect(rules).toEqual(expect.arrayContaining([
          'Rule 18',
          'Rule 22',
          'Rule 30',
          'Rule 45',
          'Rule 54',
          'Rule 60',
          'Rule 73',
          'Rule 90',
          'Rule 110',
          'Rule 122',
          'Rule 126',
          'Rule 150',
          'Rule 184'
        ]))

        const rule90 = response.body.find((engine: { slug: string }) => engine.slug === 'elementary-rule-90')
        expect(rule90.params_schema.ruleId).toMatchObject({
          type: 'select',
          default: 'Rule 90',
          options: [{ value: 'Rule 90', label: 'Rule 90' }]
        })
      })
  })

  it('seeds the Naga 3D engine for seven-state voxel spaces', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    await request(app)
      .get('/api/ca/engines?dimensions=3&states=7')
      .expect(200)
      .expect((response) => {
        const naga = response.body.find((engine: { slug: string }) => engine.slug === 'naga-3d')
        expect(naga).toMatchObject({
          name: 'Naga 3D',
          engine_kind: 'naga-3d',
          default_params: {
            ruleId: 'naga-3d',
            rendererId: 'voxel-3d',
            seed: 'naga',
            edgeWrap: true
          }
        })
        expect(naga.params_schema.ruleId.options).toEqual([{ value: 'naga-3d', label: '3D Naga' }])
        expect(naga.params_schema.edgeWrap).toMatchObject({
          type: 'boolean',
          label: 'Edge wrap',
          default: true,
          group: 'Edge settings'
        })
      })
  })

  it('seeds the Naga Markov initial condition generator for seven-state voxel spaces', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    await request(app)
      .get('/api/ca/initial-condition-generators?dimensions=3&states=7')
      .expect(200)
      .expect((response) => {
        const generator = response.body.find((item: { slug: string }) => item.slug === 'naga-markov-chains')
        expect(generator).toMatchObject({
          name: 'Naga Markov chains',
          generator_kind: 'naga-markov',
          default_params: {
            count: 3,
            length: 5,
            sameTypeProbability: 0.8,
            seed: 'naga-markov'
          }
        })
        expect(generator.params_schema.sameTypeProbability).toMatchObject({
          type: 'range',
          default: 0.8
        })
      })
  })

  it('lists preset nodes whose resolved settings use an engine', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const engine = await request(app)
      .post('/api/ca/engines')
      .send({
        slug: 'usage-engine',
        name: 'Usage Engine',
        engineKind: 'usage-engine-kind',
        supportedClasses: [{ dimensions: 2, states: 2 }]
      })
      .expect(201)
      .then((response) => response.body)

    const tree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'usage-tree', name: 'Usage Tree' })
      .expect(201)
      .then((response) => response.body)

    const root = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        slug: 'root',
        name: 'Root',
        kind: 'preset_root',
        params: { simulation: { engineId: 'usage-engine-kind' } }
      })
      .expect(201)
      .then((response) => response.body)

    const inherited = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        parentId: root.id,
        slug: 'inherited',
        name: 'Inherited',
        kind: 'shot',
        params: {}
      })
      .expect(201)
      .then((response) => response.body)

    await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        parentId: root.id,
        slug: 'unset',
        name: 'Unset',
        kind: 'shot',
        params: { simulation: { engineId: null } }
      })
      .expect(201)

    await request(app)
      .get(`/api/ca/engines/${engine.id}/usage`)
      .expect(200)
      .expect((response) => {
        expect(response.body).toEqual([
          {
            tree_id: tree.id,
            tree_name: 'Usage Tree',
            node_id: inherited.id,
            node_name: 'Inherited',
            node_kind: 'shot'
          },
          {
            tree_id: tree.id,
            tree_name: 'Usage Tree',
            node_id: root.id,
            node_name: 'Root',
            node_kind: 'preset_root'
          }
        ])
      })
  })

  it('creates an empty slide and assigns a CA preset later', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const tree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'deferred-slide-tree', name: 'Deferred Slide Tree' })
      .expect(201)
      .then((response) => response.body)

    const preset = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        slug: 'deferred-preset',
        name: 'Deferred Preset',
        kind: 'shot',
        params: { simulation: { ruleId: 'B3/S23' } }
      })
      .expect(201)
      .then((response) => response.body)

    const deck = await request(app)
      .post('/api/ca/decks')
      .send({ slug: 'deferred-slide-deck', title: 'Deferred Slide Deck' })
      .expect(201)
      .then((response) => response.body)

    const scene = await request(app)
      .post(`/api/ca/decks/${deck.id}/scenes`)
      .send({
        orderIndex: 1,
        title: 'Empty Slide',
        presetTreeId: null,
        presetNodeId: null,
        params: { caption: 'Choose a CA later' }
      })
      .expect(201)
      .then((response) => response.body)

    await request(app)
      .get(`/api/ca/decks/${deck.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.scenes[0]).toMatchObject({
          scene: {
            preset_tree_id: null,
            preset_node_id: null
          },
          ancestry: [],
          params: { caption: 'Choose a CA later' }
        })
      })

    await request(app)
      .patch(`/api/ca/scenes/${scene.id}`)
      .send({ presetTreeId: tree.id, presetNodeId: preset.id })
      .expect(200)

    await request(app)
      .get(`/api/ca/scenes/${scene.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.params).toMatchObject({
          simulation: { ruleId: 'B3/S23' },
          caption: 'Choose a CA later'
        })
      })
  })

  it('lists preset libraries with node counts and deletes empty libraries', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const emptyTree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'empty-library', name: 'Empty Library' })
      .expect(201)

    const populatedTree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'populated-library', name: 'Populated Library' })
      .expect(201)

    await request(app)
      .post(`/api/ca/preset-trees/${populatedTree.body.id}/nodes`)
      .send({ slug: 'root', name: 'Root', kind: 'preset_root' })
      .expect(201)

    await request(app)
      .get('/api/ca/preset-trees')
      .expect(200)
      .expect((response) => {
        const counts = Object.fromEntries(
          response.body.map((tree: { slug: string; node_count: number }) => [tree.slug, tree.node_count])
        )
        expect(counts).toMatchObject({
          'empty-library': 0,
          'populated-library': 1
        })
      })

    await request(app).delete(`/api/ca/preset-trees/${emptyTree.body.id}`).expect(204)
    await request(app).delete(`/api/ca/preset-trees/${emptyTree.body.id}`).expect(404)
  })

  it('registers and filters initial condition generators by CA class', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    await request(app)
      .post('/api/ca/initial-condition-generators')
      .send({
        slug: 'life-random-soup-api',
        name: 'Life Random Soup',
        generatorKind: 'random-soup',
        supportedClasses: [{ neighborhoodId: 'moore', dimensions: 2, states: 2 }],
        defaultParams: { density: 0.33 }
      })
      .expect(201)

    await request(app)
      .post('/api/ca/initial-condition-generators')
      .send({
        slug: 'lattice-gas-api',
        name: 'Lattice Gas Seed',
        generatorKind: 'lattice-gas-random',
        supportedClasses: [{ neighborhoodId: 'von-neumann', dimensions: 2, states: 7 }]
      })
      .expect(201)

    await request(app)
      .get('/api/ca/initial-condition-generators?neighborhoodId=moore&dimensions=2&states=2')
      .expect(200)
      .expect((response) => {
        expect(response.body.map((generator: { slug: string }) => generator.slug)).toEqual([
          'life-random-soup-api'
        ])
      })
  })

  it('creates a tree, nodes, deck, scene, and returns resolved scene config', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const treeResponse = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'api-tree', name: 'API Tree' })
      .expect(201)

    const treeId = treeResponse.body.id as string

    const rootResponse = await request(app)
      .post(`/api/ca/preset-trees/${treeId}/nodes`)
      .send({
        slug: 'root',
        name: 'Root',
        kind: 'preset_root',
        params: { simulation: { ruleId: 'life-3d' } }
      })
      .expect(201)

    const sceneBaseResponse = await request(app)
      .post(`/api/ca/preset-trees/${treeId}/nodes`)
      .send({
        parentId: rootResponse.body.id,
        slug: 'glider',
        name: 'Glider',
        kind: 'shot',
        params: { simulation: { initialCondition: { patternId: 'glider' } } }
      })
      .expect(201)

    await request(app)
      .get(`/api/ca/preset-trees/${treeId}/nodes/${sceneBaseResponse.body.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.params.simulation).toEqual({
          ruleId: 'life-3d',
          initialCondition: { patternId: 'glider' }
        })
      })

    const deckResponse = await request(app)
      .post('/api/ca/decks')
      .send({ slug: 'api-deck', title: 'API Deck' })
      .expect(201)

    await request(app)
      .get(`/api/ca/preset-trees/${treeId}/node-usage`)
      .expect(200)
      .expect([])

    const sceneResponse = await request(app)
      .post(`/api/ca/decks/${deckResponse.body.id}/scenes`)
      .send({
        orderIndex: 1,
        title: 'Glider Recording',
        presetTreeId: treeId,
        presetNodeId: sceneBaseResponse.body.id,
        applyMode: 'reinitialize',
        params: { camera: { mode: '2d' } }
      })
      .expect(201)

    await request(app)
      .get(`/api/ca/preset-trees/${treeId}/node-usage`)
      .expect(200)
      .expect([{ node_id: sceneBaseResponse.body.id, scene_count: 1 }])

    await request(app)
      .get(`/api/ca/scenes/${sceneResponse.body.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.params).toEqual({
          simulation: {
            ruleId: 'life-3d',
            initialCondition: { patternId: 'glider' }
          },
          camera: { mode: '2d' }
        })
      })
  })

  it('supports editor CRUD requests for decks, scenes, and preset-driven reloads', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const tree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'editor-tree', name: 'Editor Tree' })
      .expect(201)
      .then((response) => response.body)

    const root = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        slug: 'root',
        name: 'Root',
        kind: 'preset_root',
        params: {
          simulation: { ruleId: 'life-3d', grid: { size: [32, 32, 1] } },
          renderer: { id: 'classic-voxels' }
        }
      })
      .expect(201)
      .then((response) => response.body)

    const shot = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        parentId: root.id,
        slug: 'blinker',
        name: 'Blinker',
        kind: 'shot',
        params: {
          simulation: { initialCondition: { patternId: 'blinker' } },
          camera: { mode: '2d', zoom: 1 }
        }
      })
      .expect(201)
      .then((response) => response.body)

    const deck = await request(app)
      .post('/api/ca/decks')
      .send({ slug: 'editor-deck', title: 'Editor Deck' })
      .expect(201)
      .then((response) => response.body)

    await request(app)
      .patch(`/api/ca/decks/${deck.id}`)
      .send({ title: 'Updated Editor Deck', params: { recording: { fps: 60 } } })
      .expect(200)
      .expect((response) => {
        expect(response.body.title).toBe('Updated Editor Deck')
        expect(response.body.params).toEqual({ recording: { fps: 60 } })
      })

    await request(app)
      .get('/api/ca/decks')
      .expect(200)
      .expect((response) => {
        expect(response.body.map((item: { slug: string }) => item.slug)).toEqual(['editor-deck'])
      })

    const scene = await request(app)
      .post(`/api/ca/decks/${deck.id}/scenes`)
      .send({
        orderIndex: 1,
        title: 'Blinker Recording',
        presetTreeId: tree.id,
        presetNodeId: shot.id,
        params: { camera: { zoom: 1.4 } }
      })
      .expect(201)
      .then((response) => response.body)

    await request(app)
      .get(`/api/ca/scenes/${scene.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.params).toEqual({
          simulation: {
            ruleId: 'life-3d',
            grid: { size: [32, 32, 1] },
            initialCondition: { patternId: 'blinker' }
          },
          renderer: { id: 'classic-voxels' },
          camera: { mode: '2d', zoom: 1.4 }
        })
      })

    await request(app)
      .patch(`/api/ca/preset-trees/${tree.id}/nodes/${shot.id}`)
      .send({
        params: {
          simulation: { initialCondition: { patternId: 'glider' } },
          camera: { mode: '2d', zoom: 0.75 }
        }
      })
      .expect(200)

    await request(app)
      .get(`/api/ca/scenes/${scene.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.params.camera).toEqual({ mode: '2d', zoom: 1.4 })
        expect(response.body.params.simulation.initialCondition).toEqual({ patternId: 'glider' })
      })

    await request(app)
      .patch(`/api/ca/scenes/${scene.id}`)
      .send({
        orderIndex: 2,
        title: 'Glider Patch',
        applyMode: 'patch_existing',
        params: { simulation: { speed: 1.5 }, overlays: ['clean-recording'] }
      })
      .expect(200)
      .expect((response) => {
        expect(response.body).toMatchObject({
          order_index: 2,
          title: 'Glider Patch',
          apply_mode: 'patch_existing',
          requires_previous_scene: true
        })
      })

    await request(app)
      .get(`/api/ca/decks/${deck.id}/scenes`)
      .expect(200)
      .expect((response) => {
        expect(response.body.map((item: { title: string }) => item.title)).toEqual(['Glider Patch'])
      })

    await request(app).delete(`/api/ca/scenes/${scene.id}`).expect(204)
    await request(app).get(`/api/ca/scenes/${scene.id}`).expect(404)
    await request(app).get(`/api/ca/preset-trees/${tree.id}/nodes/${shot.id}`).expect(200)
    await request(app).delete(`/api/ca/decks/${deck.id}`).expect(204)
    await request(app).get(`/api/ca/decks/${deck.id}`).expect(404)
  })

  it('returns a resolved deck payload for viewer playback', async () => {
    const db = await createTestDb()
    const app = createCaStudioApi(db)

    const tree = await request(app)
      .post('/api/ca/preset-trees')
      .send({ slug: 'viewer-tree', name: 'Viewer Tree' })
      .expect(201)
      .then((response) => response.body)

    const root = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        slug: 'root',
        name: 'Root',
        kind: 'preset_root',
        params: {
          simulation: { ruleId: 'life-3d' },
          renderer: { id: 'classic-voxels' }
        }
      })
      .expect(201)
      .then((response) => response.body)

    const singleCell = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        parentId: root.id,
        slug: 'single-cell',
        name: 'Single Cell',
        kind: 'shot',
        params: {
          simulation: { initialCondition: { patternId: 'single-cell' } }
        }
      })
      .expect(201)
      .then((response) => response.body)

    const blinker = await request(app)
      .post(`/api/ca/preset-trees/${tree.id}/nodes`)
      .send({
        parentId: root.id,
        slug: 'blinker',
        name: 'Blinker',
        kind: 'shot',
        params: {
          simulation: { initialCondition: { patternId: 'blinker' } }
        }
      })
      .expect(201)
      .then((response) => response.body)

    const deck = await request(app)
      .post('/api/ca/decks')
      .send({ slug: 'viewer-deck', title: 'Viewer Deck' })
      .expect(201)
      .then((response) => response.body)

    await request(app)
      .post(`/api/ca/decks/${deck.id}/scenes`)
      .send({
        orderIndex: 2,
        title: 'Blinker',
        presetTreeId: tree.id,
        presetNodeId: blinker.id,
        applyMode: 'patch_existing',
        params: { camera: { mode: '2d', zoom: 1.1 } }
      })
      .expect(201)

    await request(app)
      .post(`/api/ca/decks/${deck.id}/scenes`)
      .send({
        orderIndex: 1,
        title: 'Single Cell',
        presetTreeId: tree.id,
        presetNodeId: singleCell.id,
        params: { camera: { mode: '2d', zoom: 1.5 } }
      })
      .expect(201)

    await request(app)
      .get(`/api/ca/decks/${deck.id}/resolved`)
      .expect(200)
      .expect((response) => {
        expect(response.body.deck.title).toBe('Viewer Deck')
        expect(response.body.scenes.map((entry: { scene: { title: string } }) => entry.scene.title)).toEqual([
          'Single Cell',
          'Blinker'
        ])
        expect(response.body.scenes[0].params).toMatchObject({
          simulation: {
            ruleId: 'life-3d',
            initialCondition: { patternId: 'single-cell' }
          },
          renderer: { id: 'classic-voxels' },
          camera: { mode: '2d', zoom: 1.5 }
        })
        expect(response.body.scenes[1].scene.requires_previous_scene).toBe(true)
        expect(response.body.scenes[1].params.camera).toEqual({ mode: '2d', zoom: 1.1 })
      })
  })
})