package hclwrite

import (
    "fmt"
    "testing"

    "reflect"

    "github.com/davecgh/go-spew/spew"
    "Havoc/pkg/profile/yaotl/hclsyntax"
)

func TestFormat(t *testing.T) {
    tests := []struct {
        input string
        want  string
    }{
        {
            ``,
            ``,
        },
        {
            `a=1`,
            `a = 1`,
        },
        {
            `a=b.c`,
            `a = b.c`,
        },
        {
            `a=b[c]`,
            `a = b[c]`,
        },
        {
            `a=b()[c]`,
            `a = b()[c]`,
        },
        {
            `a=["hello"][0]`,
            `a = ["hello"][0]`,
        },
        {
            `( a+2 )`,
            `(a + 2)`,
        },
        {
            `( a*2 )`,
            `(a * 2)`,
        },
        {
            `( a+-2 )`,
            `(a + -2)`,
        },
        {
            `( a*-2 )`,
            `(a * -2)`,
        },
        {
            `(-2+1)`,
            `(-2 + 1)`,
        },
        {
            `foo(1, -2,a*b, b,c)`,
            `foo(1, -2, a * b, b, c)`,
        },
        {
            `foo(a,b...)`,
            `foo(a, b...)`,
        },
        {
            `! true`,
            `!true`,
        },
        {
            `a="hello ${ name }"`,
            `a = "hello ${name}"`,
        },
        {
            `a="hello ${~ name ~}"`,
            `a = "hello ${~name~}"`,
        },
        {
            `a="${b}${c}${ d } ${e}"`,
            `a = "${b}${c}${d} ${e}"`,
        },
        {
            `"%{if true}${var.foo}%{endif}"`,
            `"%{if true}${var.foo}%{endif}"`,
        },
        {
            `b{}`,
            `b {}`,
        },
        {
            `
"${
hello
}"
`,
            `
"${
  hello
}"
`,
        },
        {
            `
foo(
1,
- 2,
a*b,
b,
c,
)
`,
            `
foo(
  1,
  -2,
  a * b,
  b,
  c,
)
`,
        },
        {
            `a?b:c`,
            `a ? b : c`,
        },
        {
            `[ [ ] ]`,
            `[[]]`,
        },
        {
            `[for x in y : x]`,
            `[for x in y : x]`,
        },
        {
            `[for x in [y] : x]`,
            `[for x in [y] : x]`,
        },
        {
            `
[
[
a
]
]
`,
            `
[
  [
    a
  ]
]
`,
        },
        {
            `
[[
a
]]
`,
            `
[[
  a
]]
`,
        },
        {
            `
[[
[
a
]
]]
`,
            `
[[
  [
    a
  ]
]]
`,
        },
        {
            // degenerate case with asymmetrical brackets
            `
[[
[
a
]]
]
`,
            `
[[
  [
    a
  ]]
]
`,
        },
        {
            `
b {
a = 1
}
`,
            `
b {
  a = 1
}
`,
        },
        {
            `
b {a = 1}
`,
            `
b { a = 1 }
`,
        },
        {
            `
a = 1
bungle = 2
`,
            `
a      = 1
bungle = 2
`,
        },
        {
            `
a = 1

bungle = 2
`,
            `
a = 1

bungle = 2
`,
        },
        {
            `
a = 1 # foo
bungle = 2
`,
            `
a      = 1 # foo
bungle = 2
`,
        },
        {
            `
a = 1 # foo
bungle = "bonce" # baz
`,
            `
a      = 1       # foo
bungle = "bonce" # baz
`,
        },
        {
            `
# here we go
a = 1 # foo
bungle = "bonce" # baz
`,
            `
# here we go
a      = 1       # foo
bungle = "bonce" # baz
`,
        },
        {
            `
foo {} # here we go
a = 1 # foo
bungle = "bonce" # baz
`,
            `
foo {}           # here we go
a      = 1       # foo
bungle = "bonce" # baz
`,
        },
        {
            `
a = 1 # foo
bungle = "bonce" # baz
zebra = "striped" # baz
`,
            `
a      = 1         # foo
bungle = "bonce"   # baz
zebra  = "striped" # baz
`,
        },
        {
            `
a = 1 # foo
bungle = (
    "bonce"
) # baz
zebra = "striped" # baz
`,
            `
a = 1 # foo
bungle = (
  "bonce"
)                 # baz
zebra = "striped" # baz
`,
        },
        {
            `
a="apple"# foo
bungle=(# woo parens
"bonce"
)# baz
zebra="striped"# baz
`,
            `
a = "apple" # foo
bungle = (  # woo parens
  "bonce"
)                 # baz
zebra = "striped" # baz
`,
        },
        {
            `
𝒜 = 1 # foo
bungle = "🇬🇧" # baz
zebra = "striped" # baz
`,
            `
𝒜      = 1         # foo
bungle = "🇬🇧"       # baz
zebra  = "striped" # baz
`,
        },
        {
            `
foo {
# ...
}
`,
            `
foo {
  # ...
}
`,
        },
        {
            `
foo = {
# ...
}
`,
            `
foo = {
  # ...
}
`,
        },
        {
            `
foo = [
# ...
]
`,
            `
foo = [
  # ...
]
`,
        },
        {
            `
foo = [{
# ...
}]
`,
            `
foo = [{
  # ...
}]
`,
        },
        {
            `
foo {
bar {
# ...
}
}
`,
            `
foo {
  bar {
    # ...
  }
}
`,
        },
        {
            `
foo {
bar = {
# ...
}
}
`,
            `
foo {
  bar = {
    # ...
  }
}
`,
        },
        {
            `
foo {
bar = [
# ...
]
}
`,
            `
foo {
  bar = [
    # ...
  ]
}
`,
        },
        {
            `
foo {
bar = <<EOT
Foo bar baz
EOT
}
`,
            `
foo {
  bar = <<EOT
Foo bar baz
EOT
}
`,
        },
        {
            `
foo {
bar = <<-EOT
Foo bar baz
EOT
}
`,
            `
foo {
  bar = <<-EOT
Foo bar baz
EOT
}
`,
        },
        {
            `
foo {
bar = <<-EOT
  Foo bar baz
EOT
}
`,
            `
foo {
  bar = <<-EOT
  Foo bar baz
EOT
}
`,
        },
        {
            `
foo {
bar = <<-EOT
  blahblahblah = x
EOT
}
`,
            `
foo {
  bar = <<-EOT
  blahblahblah = x
EOT
}
`,
        },
        {
            `
foo {
bar = <<-EOT
  ${{ blahblahblah = x }}
EOT
}
`,
            `
foo {
  bar = <<-EOT
  ${ { blahblahblah = x } }
EOT
}
`,
        },
        {
            `
foo {
  bar = <<-EOT
  ${a}${b}${ c } ${d}
EOT
}
`,
            `
foo {
  bar = <<-EOT
  ${a}${b}${c} ${d}
EOT
}
`,
        },
        {
            `
foo {
bar = <<EOT
Foo bar baz
EOT
}

baz {
default="string"
}
`,
            `
foo {
  bar = <<EOT
Foo bar baz
EOT
}

baz {
  default = "string"
}
`,
        },
        {
            `
foo {
bar = <<EOT
Foo bar baz
EOT
baz = <<EOT
Foo bar baz
EOT
}

bar {
foo = "bar"
}
`,
            `
foo {
  bar = <<EOT
Foo bar baz
EOT
  baz = <<EOT
Foo bar baz
EOT
}

bar {
  foo = "bar"
}
`,
        },
        {
            `
module "foo" {
foo = <<EOF
5
EOF
}

module "x" {
a = "b"
abcde = "456"
}`,
            `
module "foo" {
  foo = <<EOF
5
EOF
}

module "x" {
  a     = "b"
  abcde = "456"
}`,
        },
    }

    for i, test := range tests {
        t.Run(fmt.Sprintf("%02d", i), func(t *testing.T) {
            tokens := lexConfig([]byte(test.input))
            format(tokens)
            t.Logf("tokens %s\n", spew.Sdump(tokens))
            got := string(tokens.Bytes())

            if got != test.want {
                t.Errorf("wrong result\ninput:\n%s\ngot:\n%s\nwant:\n%s", test.input, got, test.want)
            }
        })
    }

}

func TestLinesForFormat(t *testing.T) {
    tests := []struct {
        tokens Tokens
        want   []formatLine
    }{
        {
            Tokens{
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{},
                },
            },
        },
        {
            Tokens{
                &Token{Type: hclsyntax.TokenIdent},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenIdent},
                    },
                },
            },
        },
        {
            Tokens{
                &Token{Type: hclsyntax.TokenIdent},
                &Token{Type: hclsyntax.TokenNewline},
                &Token{Type: hclsyntax.TokenNumberLit},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenIdent},
                        &Token{Type: hclsyntax.TokenNewline},
                    },
                },
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenNumberLit},
                    },
                },
            },
        },
        {
            Tokens{
                &Token{Type: hclsyntax.TokenIdent},
                &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                &Token{Type: hclsyntax.TokenNumberLit},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenIdent},
                    },
                    comment: Tokens{
                        &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                    },
                },
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenNumberLit},
                    },
                },
            },
        },
        {
            Tokens{
                &Token{Type: hclsyntax.TokenIdent},
                &Token{Type: hclsyntax.TokenEqual},
                &Token{Type: hclsyntax.TokenNumberLit},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenIdent},
                    },
                    assign: Tokens{
                        &Token{Type: hclsyntax.TokenEqual},
                        &Token{Type: hclsyntax.TokenNumberLit},
                    },
                },
            },
        },
        {
            Tokens{
                &Token{Type: hclsyntax.TokenIdent},
                &Token{Type: hclsyntax.TokenEqual},
                &Token{Type: hclsyntax.TokenNumberLit},
                &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenIdent},
                    },
                    assign: Tokens{
                        &Token{Type: hclsyntax.TokenEqual},
                        &Token{Type: hclsyntax.TokenNumberLit},
                    },
                    comment: Tokens{
                        &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                    },
                },
                {
                    lead: Tokens{},
                },
            },
        },
        {
            Tokens{
                // A comment goes into a comment cell only if it is after
                // some non-comment tokens, since whole-line comments must
                // stay flush with the indent level.
                &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                &Token{Type: hclsyntax.TokenEOF},
            },
            []formatLine{
                {
                    lead: Tokens{
                        &Token{Type: hclsyntax.TokenComment, Bytes: []byte("#foo\n")},
                    },
                },
                {
                    lead: Tokens{},
                },
            },
        },
    }

    for i, test := range tests {
        t.Run(fmt.Sprintf("%02d", i), func(t *testing.T) {
            got := linesForFormat(test.tokens)

            if !reflect.DeepEqual(got, test.want) {
                t.Errorf("wrong result\ngot:  %#v\nwant: %#v", got, test.want)
            }
        })
    }
}