package hercules

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"gopkg.in/src-d/go-git.v4/plumbing"
	"gopkg.in/src-d/go-git.v4/plumbing/object"
)

func TestBurndownMeta(t *testing.T) {
	burndown := BurndownAnalysis{}
	assert.Equal(t, burndown.Name(), "Burndown")
	assert.Equal(t, len(burndown.Provides()), 0)
	required := [...]string{"file_diff", "renamed_changes", "blob_cache", "day", "author"}
	for _, name := range required {
		assert.Contains(t, burndown.Requires(), name)
	}
}

func TestBurndownConsumeFinalize(t *testing.T) {
	burndown := BurndownAnalysis{
		Granularity:  30,
		Sampling:     30,
		PeopleNumber: 2,
	}
	burndown.Initialize(testRepository)
	deps := map[string]interface{}{}

	// stage 1
	deps["author"] = 0
	deps["day"] = 0
	cache := map[plumbing.Hash]*object.Blob{}
	hash := plumbing.NewHash("291286b4ac41952cbd1389fda66420ec03c1a9fe")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("c29112dbd697ad9b401333b80c18a63951bc18d9")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("baa64828831d174f40140e4b3cfa77d1e917a2c1")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("dc248ba2b22048cc730c571a748e8ffcf7085ab9")
	cache[hash], _ = testRepository.BlobObject(hash)
	deps["blob_cache"] = cache
	changes := make(object.Changes, 3)
	treeFrom, _ := testRepository.TreeObject(plumbing.NewHash(
		"a1eb2ea76eb7f9bfbde9b243861474421000eb96"))
	treeTo, _ := testRepository.TreeObject(plumbing.NewHash(
		"994eac1cd07235bb9815e547a75c84265dea00f5"))
	changes[0] = &object.Change{From: object.ChangeEntry{
		Name: "analyser.go",
		Tree: treeFrom,
		TreeEntry: object.TreeEntry{
			Name: "analyser.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("dc248ba2b22048cc730c571a748e8ffcf7085ab9"),
		},
	}, To: object.ChangeEntry{
		Name: "analyser.go",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: "analyser.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("baa64828831d174f40140e4b3cfa77d1e917a2c1"),
		},
	}}
	changes[1] = &object.Change{From: object.ChangeEntry{}, To: object.ChangeEntry{
		Name: "cmd/hercules/main.go",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: "cmd/hercules/main.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("c29112dbd697ad9b401333b80c18a63951bc18d9"),
		},
	},
	}
	changes[2] = &object.Change{From: object.ChangeEntry{}, To: object.ChangeEntry{
		Name: ".travis.yml",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: ".travis.yml",
			Mode: 0100644,
			Hash: plumbing.NewHash("291286b4ac41952cbd1389fda66420ec03c1a9fe"),
		},
	},
	}
	deps["renamed_changes"] = changes
	fd := fixtureFileDiff()
	result, err := fd.Consume(deps)
	assert.Nil(t, err)
	deps["file_diff"] = result["file_diff"]
	result, err = burndown.Consume(deps)
	assert.Nil(t, result)
	assert.Nil(t, err)
	assert.Equal(t, burndown.previousDay, 0)
	assert.Equal(t, len(burndown.files), 3)
	assert.Equal(t, burndown.files["cmd/hercules/main.go"].Len(), 207)
	assert.Equal(t, burndown.files["analyser.go"].Len(), 926)
	assert.Equal(t, burndown.files[".travis.yml"].Len(), 12)
	assert.Equal(t, len(burndown.people), 2)
	assert.Equal(t, burndown.people[0][0], int64(12+207+926))
	assert.Equal(t, len(burndown.globalStatus), 1)
	assert.Equal(t, burndown.globalStatus[0], int64(12+207+926))
	assert.Equal(t, len(burndown.globalHistory), 0)
	assert.Equal(t, len(burndown.fileHistories), 0)
	burndown2 := BurndownAnalysis{
		Granularity:  30,
		Sampling:     0,
		PeopleNumber: 0,
	}
	burndown2.Initialize(testRepository)
	_, err = burndown2.Consume(deps)
	assert.Nil(t, err)
	assert.Equal(t, len(burndown2.people), 0)

	// stage 2
	// 2b1ed978194a94edeabbca6de7ff3b5771d4d665
	deps["author"] = 1
	deps["day"] = 30
	cache = map[plumbing.Hash]*object.Blob{}
	hash = plumbing.NewHash("291286b4ac41952cbd1389fda66420ec03c1a9fe")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("baa64828831d174f40140e4b3cfa77d1e917a2c1")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("29c9fafd6a2fae8cd20298c3f60115bc31a4c0f2")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("c29112dbd697ad9b401333b80c18a63951bc18d9")
	cache[hash], _ = testRepository.BlobObject(hash)
	hash = plumbing.NewHash("f7d918ec500e2f925ecde79b51cc007bac27de72")
	cache[hash], _ = testRepository.BlobObject(hash)
	deps["blob_cache"] = cache
	changes = make(object.Changes, 3)
	treeFrom, _ = testRepository.TreeObject(plumbing.NewHash(
		"96c6ece9b2f3c7c51b83516400d278dea5605100"))
	treeTo, _ = testRepository.TreeObject(plumbing.NewHash(
		"251f2094d7b523d5bcc60e663b6cf38151bf8844"))
	changes[0] = &object.Change{From: object.ChangeEntry{
		Name: "analyser.go",
		Tree: treeFrom,
		TreeEntry: object.TreeEntry{
			Name: "analyser.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("baa64828831d174f40140e4b3cfa77d1e917a2c1"),
		},
	}, To: object.ChangeEntry{
		Name: "burndown.go",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: "burndown.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("29c9fafd6a2fae8cd20298c3f60115bc31a4c0f2"),
		},
	},
	}
	changes[1] = &object.Change{From: object.ChangeEntry{
		Name: "cmd/hercules/main.go",
		Tree: treeFrom,
		TreeEntry: object.TreeEntry{
			Name: "cmd/hercules/main.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("c29112dbd697ad9b401333b80c18a63951bc18d9"),
		},
	}, To: object.ChangeEntry{
		Name: "cmd/hercules/main.go",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: "cmd/hercules/main.go",
			Mode: 0100644,
			Hash: plumbing.NewHash("f7d918ec500e2f925ecde79b51cc007bac27de72"),
		},
	},
	}
	changes[2] = &object.Change{From: object.ChangeEntry{
		Name: ".travis.yml",
		Tree: treeTo,
		TreeEntry: object.TreeEntry{
			Name: ".travis.yml",
			Mode: 0100644,
			Hash: plumbing.NewHash("291286b4ac41952cbd1389fda66420ec03c1a9fe"),
		},
	}, To: object.ChangeEntry{},
	}
	deps["renamed_changes"] = changes
	fd = fixtureFileDiff()
	result, err = fd.Consume(deps)
	assert.Nil(t, err)
	deps["file_diff"] = result["file_diff"]
	result, err = burndown.Consume(deps)
	assert.Nil(t, result)
	assert.Nil(t, err)
	assert.Equal(t, burndown.previousDay, 30)
	assert.Equal(t, len(burndown.files), 2)
	assert.Equal(t, burndown.files["cmd/hercules/main.go"].Len(), 290)
	assert.Equal(t, burndown.files["burndown.go"].Len(), 543)
	assert.Equal(t, len(burndown.people), 2)
	assert.Equal(t, len(burndown.globalStatus), 2)
	assert.Equal(t, burndown.globalStatus[0], int64(464))
	assert.Equal(t, burndown.globalStatus[1], int64(0))
	assert.Equal(t, len(burndown.globalHistory), 1)
	assert.Equal(t, len(burndown.globalHistory[0]), 2)
	assert.Equal(t, len(burndown.fileHistories), 3)
	out := burndown.Finalize().(BurndownResult)
	/*
	GlobalHistory   [][]int64
	FileHistories   map[string][][]int64
	PeopleHistories [][][]int64
	PeopleMatrix    [][]int64
	*/
	assert.Equal(t, len(out.GlobalHistory), 2)
	for i := 0; i < 2; i++ {
		assert.Equal(t, len(out.GlobalHistory[i]), 2)
	}
	assert.Equal(t, len(out.GlobalHistory), 2)
	assert.Equal(t, out.GlobalHistory[0][0], int64(1145))
	assert.Equal(t, out.GlobalHistory[0][1], int64(0))
	assert.Equal(t, out.GlobalHistory[1][0], int64(464))
	assert.Equal(t, out.GlobalHistory[1][1], int64(369))
	assert.Equal(t, len(out.FileHistories), 2)
	assert.Equal(t, len(out.FileHistories["cmd/hercules/main.go"]), 2)
	assert.Equal(t, len(out.FileHistories["burndown.go"]), 2)
	assert.Equal(t, len(out.FileHistories["cmd/hercules/main.go"][0]), 2)
	assert.Equal(t, len(out.FileHistories["burndown.go"][0]), 2)
	assert.Equal(t, len(out.PeopleMatrix), 2)
	assert.Equal(t, len(out.PeopleMatrix[0]), 4)
	assert.Equal(t, len(out.PeopleMatrix[1]), 4)
	assert.Equal(t, out.PeopleMatrix[0][0], int64(1145))
	assert.Equal(t, out.PeopleMatrix[0][1], int64(0))
	assert.Equal(t, out.PeopleMatrix[0][2], int64(0))
	assert.Equal(t, out.PeopleMatrix[0][3], int64(-681))
	assert.Equal(t, out.PeopleMatrix[1][0], int64(369))
	assert.Equal(t, out.PeopleMatrix[1][1], int64(0))
	assert.Equal(t, out.PeopleMatrix[1][2], int64(0))
	assert.Equal(t, out.PeopleMatrix[1][3], int64(0))
	assert.Equal(t, len(out.PeopleHistories), 2)
	for i := 0; i < 2; i++ {
		assert.Equal(t, len(out.PeopleHistories[i]), 2)
		assert.Equal(t, len(out.PeopleHistories[i][0]), 2)
		assert.Equal(t, len(out.PeopleHistories[i][1]), 2)
	}
}