package coll_test

import (
	"testing"

	"github.com/stretchr/testify/require"
	"sectorinf.com/emilis/flabk/pkg/coll"
)

func TestVector(t *testing.T) {
	tests := map[string]func(that *require.Assertions){
		"push": func(that *require.Assertions) {
			v := coll.New[int]()
			v = v.Push(0).Push(1).Push(2).Push(3).Push(4).Push(5)
			that.Len(v, 6)
			that.EqualValues([]int{0, 1, 2, 3, 4, 5}, v)
		},
		"len": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})
			that.Len(v, len(v))
		},
		"from": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})
			that.Len(v, 3)
		},
		"pop": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})
			t, v := v.Pop()
			that.Equal(3, t)
			that.EqualValues([]int{1, 2}, v)
		},
		"withcap": func(that *require.Assertions) {
			v := coll.WithCap[int](3)
			that.Zero(len(v))
			that.Len(v, 0)
		},
		"remove": func(that *require.Assertions) {
			v := coll.New[int]().Push(0).Push(1).Push(2)
			r1 := v.Remove(1)
			that.Equal(2, len(r1))
			that.EqualValues([]int{0, 2}, r1)
			that.Panics(func() {
				v.Remove(-1)
			})
			that.Panics(func() {
				v.Remove(100000)
			})
		},
		"remove unordered": func(that *require.Assertions) {
			v := coll.New[int]().Push(0).Push(1).Push(2)
			v = v.RemoveUnordered(1)
			that.Equal(2, len(v))
			vSlice := v
			if vSlice[0] == 0 {
				that.Equal(2, vSlice[1])
			} else {
				that.Equal(2, vSlice[0])
				that.Zero(vSlice[1])
			}
		},
		"append": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3}).Append(4, 5, 6)
			that.Equal(6, len(v))
			that.EqualValues([]int{1, 2, 3, 4, 5, 6}, v)
		},
		"getsoft": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})
			that.Equal(2, v.GetSoft(1))
			that.Zero(v.GetSoft(-1000))
			that.Zero(v.GetSoft(1000))
		},
		"get": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})
			that.Equal(2, v.Get(1))
			that.Panics(func() {
				v.Get(-1000)
			})
			that.Panics(func() {
				v.Get(1000)
			})
		},
		"clone": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})

			v1 := v.Clone().Set(1, 1)
			that.Equal(3, len(v1))
			that.EqualValues([]int{1, 1, 3}, v1)
			that.EqualValues([]int{1, 2, 3}, v)
		},
		"set": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3})

			v1 := v.Clone().Set(1, 1)
			that.Equal(3, len(v1))
			that.EqualValues([]int{1, 1, 3}, v1)

			v2 := v.Clone().Set(2, 1)
			that.Equal(3, len(v2))
			that.EqualValues([]int{1, 2, 1}, v2)

			v3 := v.Clone().Set(0, 16)
			that.Equal(3, len(v3))
			that.EqualValues([]int{16, 2, 3}, v3)

			that.Panics(func() {
				v.Set(-1000, 1)
			})
			that.Panics(func() {
				v.Set(3, 1)
			})
		},
		"sub": func(that *require.Assertions) {
			v := coll.From([]int{0, 1, 2, 3, 4, 5, 6})

			v1 := v.Clone().Sub(2, 4)
			that.Equal(2, len(v1))
			that.EqualValues([]int{2, 3}, v1)

			v2 := v.Clone().Sub(2, 5)
			that.Equal(3, len(v2))
			that.EqualValues([]int{2, 3, 4}, v2)

			v3 := v.Clone().Sub(5, -1)
			that.Equal(2, len(v3))
			that.EqualValues([]int{5, 6}, v3)

			v4 := v.Clone().Sub(-1, 2)
			that.Equal(2, len(v4))
			that.EqualValues([]int{0, 1}, v4)

			that.Panics(func() {
				v.Sub(0, 1000)
			})
			that.Panics(func() {
				v.Sub(4000, 4002)
			})
			that.Panics(func() {
				v.Sub(2, 1)
			})
		},
		"filter": func(that *require.Assertions) {
			v := coll.From([]int{1, 2, 3, 4, 5, 6})
			v = v.Filter(func(i int) bool { return i%2 == 0 })
			that.Len(v, 3)
		},
		"any": func(that *require.Assertions) {
			that.True(coll.From([]int{1, 2, 3, 4, 5, 6}).Any(func(i int) bool { return i == 3 }))
			that.False(coll.From([]int{1, 2, 3, 4, 5, 6}).Any(func(i int) bool { return i == 666 }))
		},
		"take": func(that *require.Assertions) {
			that.EqualValues([]int{1, 2, 3}, coll.From([]int{1, 2, 3, 4, 5, 6}).Take(3))
		},
	}

	for name, test := range tests {
		t.Run(name, func(tt *testing.T) {
			test(require.New(tt))
		})
	}
}