package stmt_test

import (
	"bytes"
	"reflect"
	"testing"

	"github.com/davecgh/go-spew/spew"

	"github.com/z7zmey/php-parser/node/expr"
	"github.com/z7zmey/php-parser/position"

	"github.com/kylelemons/godebug/pretty"
	"github.com/z7zmey/php-parser/node"
	"github.com/z7zmey/php-parser/node/stmt"
	"github.com/z7zmey/php-parser/php5"
	"github.com/z7zmey/php-parser/php7"
)

func assertEqual(t *testing.T, expected interface{}, actual interface{}) {
	if !reflect.DeepEqual(expected, actual) {
		diff := pretty.Compare(expected, actual)

		if diff != "" {
			t.Errorf("diff: (-expected +actual)\n%s", diff)
		} else {
			t.Errorf("expected and actual are not equal\nexpectd: %+v\nactual: %+v\n", expected, actual)
			t.Log(spew.Sdump(expected, actual))
		}

	}
}

func TestAltIf(t *testing.T) {
	src := `<?
		if ($a) :
		endif;
	`

	expected := &node.Root{
		Position: &position.Position{
			StartLine: 2,
			EndLine:   3,
			StartPos:  6,
			EndPos:    23,
		},
		Stmts: []node.Node{
			&stmt.AltIf{
				Position: &position.Position{
					StartLine: 2,
					EndLine:   3,
					StartPos:  6,
					EndPos:    23,
				},
				Cond: &expr.Variable{
					Position: &position.Position{
						StartLine: 2,
						EndLine:   2,
						StartPos:  10,
						EndPos:    11,
					},
					VarName: &node.Identifier{
						Position: &position.Position{
							StartLine: 2,
							EndLine:   2,
							StartPos:  10,
							EndPos:    11,
						},
						Value: "a",
					},
				},
				Stmt: &stmt.StmtList{
					Position: &position.Position{
						StartLine: -1,
						EndLine:   -1,
						StartPos:  -1,
						EndPos:    -1,
					},
					Stmts: []node.Node{},
				},
			},
		},
	}

	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
	php7parser.Parse()
	actual := php7parser.GetRootNode()
	assertEqual(t, expected, actual)

	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
	php5parser.Parse()
	actual = php5parser.GetRootNode()
	assertEqual(t, expected, actual)
}

func TestAltElseIf(t *testing.T) {
	src := `<?
		if ($a) :
		elseif ($b):
		endif;
	`

	expected := &node.Root{
		Position: &position.Position{
			StartLine: 2,
			EndLine:   4,
			StartPos:  6,
			EndPos:    38,
		},
		Stmts: []node.Node{
			&stmt.AltIf{
				Position: &position.Position{
					StartLine: 2,
					EndLine:   4,
					StartPos:  6,
					EndPos:    38,
				},
				Cond: &expr.Variable{
					Position: &position.Position{
						StartLine: 2,
						EndLine:   2,
						StartPos:  10,
						EndPos:    11,
					},
					VarName: &node.Identifier{
						Position: &position.Position{
							StartLine: 2,
							EndLine:   2,
							StartPos:  10,
							EndPos:    11,
						},
						Value: "a",
					},
				},
				Stmt: &stmt.StmtList{
					Position: &position.Position{
						StartLine: -1,
						EndLine:   -1,
						StartPos:  -1,
						EndPos:    -1,
					},
					Stmts: []node.Node{},
				},
				ElseIf: []node.Node{
					&stmt.AltElseIf{
						Position: &position.Position{
							StartLine: 3,
							EndLine:   -1,
							StartPos:  18,
							EndPos:    -1,
						},
						Cond: &expr.Variable{
							Position: &position.Position{
								StartLine: 3,
								EndLine:   3,
								StartPos:  26,
								EndPos:    27,
							},
							VarName: &node.Identifier{
								Position: &position.Position{
									StartLine: 3,
									EndLine:   3,
									StartPos:  26,
									EndPos:    27,
								},
								Value: "b",
							},
						},
						Stmt: &stmt.StmtList{
							Position: &position.Position{
								StartLine: -1,
								EndLine:   -1,
								StartPos:  -1,
								EndPos:    -1,
							},
							Stmts: []node.Node{},
						},
					},
				},
			},
		},
	}

	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
	php7parser.Parse()
	actual := php7parser.GetRootNode()
	assertEqual(t, expected, actual)

	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
	php5parser.Parse()
	actual = php5parser.GetRootNode()
	assertEqual(t, expected, actual)
}

func TestAltElse(t *testing.T) {
	src := `<?
		if ($a) :
		else:
		endif;
	`

	expected := &node.Root{
		Position: &position.Position{
			StartLine: 2,
			EndLine:   4,
			StartPos:  6,
			EndPos:    31,
		},
		Stmts: []node.Node{
			&stmt.AltIf{
				Position: &position.Position{
					StartLine: 2,
					EndLine:   4,
					StartPos:  6,
					EndPos:    31,
				},
				Cond: &expr.Variable{
					Position: &position.Position{
						StartLine: 2,
						EndLine:   2,
						StartPos:  10,
						EndPos:    11,
					},
					VarName: &node.Identifier{
						Position: &position.Position{
							StartLine: 2,
							EndLine:   2,
							StartPos:  10,
							EndPos:    11,
						},
						Value: "a",
					},
				},
				Stmt: &stmt.StmtList{
					Position: &position.Position{
						StartLine: -1,
						EndLine:   -1,
						StartPos:  -1,
						EndPos:    -1,
					},
					Stmts: []node.Node{},
				},
				Else: &stmt.AltElse{
					Position: &position.Position{
						StartLine: 3,
						EndLine:   -1,
						StartPos:  18,
						EndPos:    -1,
					},
					Stmt: &stmt.StmtList{
						Position: &position.Position{
							StartLine: -1,
							EndLine:   -1,
							StartPos:  -1,
							EndPos:    -1,
						},
						Stmts: []node.Node{},
					},
				},
			},
		},
	}

	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
	php7parser.Parse()
	actual := php7parser.GetRootNode()
	assertEqual(t, expected, actual)

	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
	php5parser.Parse()
	actual = php5parser.GetRootNode()
	assertEqual(t, expected, actual)
}

func TestAltElseElseIf(t *testing.T) {
	src := `<?
		if ($a) :
		elseif ($b):
		elseif ($c):
		else:
		endif;
	`

	expected := &node.Root{
		Position: &position.Position{
			StartLine: 2,
			EndLine:   6,
			StartPos:  6,
			EndPos:    61,
		},
		Stmts: []node.Node{
			&stmt.AltIf{
				Position: &position.Position{
					StartLine: 2,
					EndLine:   6,
					StartPos:  6,
					EndPos:    61,
				},
				Cond: &expr.Variable{
					Position: &position.Position{
						StartLine: 2,
						EndLine:   2,
						StartPos:  10,
						EndPos:    11,
					},
					VarName: &node.Identifier{
						Position: &position.Position{
							StartLine: 2,
							EndLine:   2,
							StartPos:  10,
							EndPos:    11,
						},
						Value: "a",
					},
				},
				Stmt: &stmt.StmtList{
					Position: &position.Position{
						StartLine: -1,
						EndLine:   -1,
						StartPos:  -1,
						EndPos:    -1,
					},
					Stmts: []node.Node{},
				},
				ElseIf: []node.Node{
					&stmt.AltElseIf{
						Position: &position.Position{
							StartLine: 3,
							EndLine:   -1,
							StartPos:  18,
							EndPos:    -1,
						},
						Cond: &expr.Variable{
							Position: &position.Position{
								StartLine: 3,
								EndLine:   3,
								StartPos:  26,
								EndPos:    27,
							},
							VarName: &node.Identifier{
								Position: &position.Position{
									StartLine: 3,
									EndLine:   3,
									StartPos:  26,
									EndPos:    27,
								},
								Value: "b",
							},
						},
						Stmt: &stmt.StmtList{
							Position: &position.Position{
								StartLine: -1,
								EndLine:   -1,
								StartPos:  -1,
								EndPos:    -1,
							},
							Stmts: []node.Node{},
						},
					},
					&stmt.AltElseIf{
						Position: &position.Position{
							StartLine: 4,
							EndLine:   -1,
							StartPos:  33,
							EndPos:    -1,
						},
						Cond: &expr.Variable{
							Position: &position.Position{
								StartLine: 4,
								EndLine:   4,
								StartPos:  41,
								EndPos:    42,
							},
							VarName: &node.Identifier{
								Position: &position.Position{
									StartLine: 4,
									EndLine:   4,
									StartPos:  41,
									EndPos:    42,
								},
								Value: "c",
							},
						},
						Stmt: &stmt.StmtList{
							Position: &position.Position{
								StartLine: -1,
								EndLine:   -1,
								StartPos:  -1,
								EndPos:    -1,
							},
							Stmts: []node.Node{},
						},
					},
				},
				Else: &stmt.AltElse{
					Position: &position.Position{
						StartLine: 5,
						EndLine:   -1,
						StartPos:  48,
						EndPos:    -1,
					},
					Stmt: &stmt.StmtList{
						Position: &position.Position{
							StartLine: -1,
							EndLine:   -1,
							StartPos:  -1,
							EndPos:    -1,
						},
						Stmts: []node.Node{},
					},
				},
			},
		},
	}

	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
	php7parser.Parse()
	actual := php7parser.GetRootNode()
	assertEqual(t, expected, actual)

	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
	php5parser.Parse()
	actual = php5parser.GetRootNode()
	assertEqual(t, expected, actual)
}