package cmd

import (
	"fmt"
	"runtime"
	"strings"
	"testing"

	"github.com/mikefarah/yq/v3/test"
)

func TestPrefixCmd(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s d", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	expectedOutput := `d:
  b:
    c: 3
`
	test.AssertResult(t, expectedOutput, result.Output)
}

func TestPrefixCmdArray(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s [+].d.[+]", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	expectedOutput := `- d:
    - b:
        c: 3
`
	test.AssertResult(t, expectedOutput, result.Output)
}

func TestPrefixCmd_MultiLayer(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s d.e.f", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	expectedOutput := `d:
  e:
    f:
      b:
        c: 3
`
	test.AssertResult(t, expectedOutput, result.Output)
}

func TestPrefixMultiCmd(t *testing.T) {
	content := `b:
  c: 3
---
apples: great
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s -d 1 d", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	expectedOutput := `b:
  c: 3
---
d:
  apples: great
`
	test.AssertResult(t, expectedOutput, result.Output)
}
func TestPrefixInvalidDocumentIndexCmd(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s -df d", filename))
	if result.Error == nil {
		t.Error("Expected command to fail due to invalid path")
	}
	expectedOutput := `Document index f is not a integer or *: strconv.ParseInt: parsing "f": invalid syntax`
	test.AssertResult(t, expectedOutput, result.Error.Error())
}

func TestPrefixBadDocumentIndexCmd(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s -d 1 d", filename))
	if result.Error == nil {
		t.Error("Expected command to fail due to invalid path")
	}
	expectedOutput := `asked to process document index 1 but there are only 1 document(s)`
	test.AssertResult(t, expectedOutput, result.Error.Error())
}
func TestPrefixMultiAllCmd(t *testing.T) {
	content := `b:
  c: 3
---
apples: great
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix %s -d * d", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	expectedOutput := `d:
  b:
    c: 3
---
d:
  apples: great`
	test.AssertResult(t, expectedOutput, strings.Trim(result.Output, "\n "))
}

func TestPrefixCmd_Error(t *testing.T) {
	cmd := getRootCommand()
	result := test.RunCmd(cmd, "prefix")
	if result.Error == nil {
		t.Error("Expected command to fail due to missing arg")
	}
	expectedOutput := `Must provide <filename> <prefixed_path>`
	test.AssertResult(t, expectedOutput, result.Error.Error())
}

func TestPrefixCmd_ErrorUnreadableFile(t *testing.T) {
	cmd := getRootCommand()
	result := test.RunCmd(cmd, "prefix fake-unknown a.b")
	if result.Error == nil {
		t.Error("Expected command to fail due to unknown file")
	}
	var expectedOutput string
	if runtime.GOOS == "windows" {
		expectedOutput = `open fake-unknown: The system cannot find the file specified.`
	} else {
		expectedOutput = `open fake-unknown: no such file or directory`
	}
	test.AssertResult(t, expectedOutput, result.Error.Error())
}

func TestPrefixCmd_Inplace(t *testing.T) {
	content := `b:
  c: 3
`
	filename := test.WriteTempYamlFile(content)
	defer test.RemoveTempYamlFile(filename)

	cmd := getRootCommand()
	result := test.RunCmd(cmd, fmt.Sprintf("prefix -i %s d", filename))
	if result.Error != nil {
		t.Error(result.Error)
	}
	gotOutput := test.ReadTempYamlFile(filename)
	expectedOutput := `d:
  b:
    c: 3`
	test.AssertResult(t, expectedOutput, strings.Trim(gotOutput, "\n "))
}