Create a struct with all of Hugo's config options

Primary motivation is documentation, but it will also hopefully simplify the code.

Also,

* Lower case the default output format names; this is in line with the custom ones (map keys) and how
it's treated all the places. This avoids doing `stringds.EqualFold` everywhere.

Closes #10896
Closes #10620

9 files changed, 37 insertions, 41 deletions

diff --git a/resources/resource_transformers/babel/babel.go b/resources/resource_transformers/babel/babel.go
index 89d74d9ed..ff19d9dda 100644
--- a/resources/resource_transformers/babel/babel.go
+++ b/resources/resource_transformers/babel/babel.go
@@ -170,7 +170,7 @@ func (t *babelTransformation) Transform(ctx *resources.ResourceTransformationCtx
 	stderr := io.MultiWriter(infoW, &errBuf)
 	cmdArgs = append(cmdArgs, hexec.WithStderr(stderr))
 	cmdArgs = append(cmdArgs, hexec.WithStdout(stderr))
-	cmdArgs = append(cmdArgs, hexec.WithEnviron(hugo.GetExecEnviron(t.rs.WorkingDir, t.rs.Cfg, t.rs.BaseFs.Assets.Fs)))
+	cmdArgs = append(cmdArgs, hexec.WithEnviron(hugo.GetExecEnviron(t.rs.Cfg.BaseConfig().WorkingDir, t.rs.Cfg, t.rs.BaseFs.Assets.Fs)))
 
 	defer os.Remove(compileOutput.Name())
 
diff --git a/resources/resource_transformers/htesting/testhelpers.go b/resources/resource_transformers/htesting/testhelpers.go
index 3c91fc0dd..75ae4245e 100644
--- a/resources/resource_transformers/htesting/testhelpers.go
+++ b/resources/resource_transformers/htesting/testhelpers.go
@@ -16,18 +16,16 @@ package htesting
 import (
 	"path/filepath"
 
-	"github.com/gohugoio/hugo/cache/filecache"
 	"github.com/gohugoio/hugo/config"
+	"github.com/gohugoio/hugo/config/testconfig"
 	"github.com/gohugoio/hugo/helpers"
 	"github.com/gohugoio/hugo/hugofs"
-	"github.com/gohugoio/hugo/media"
-	"github.com/gohugoio/hugo/output"
 	"github.com/gohugoio/hugo/resources"
 	"github.com/spf13/afero"
 )
 
 func NewTestResourceSpec() (*resources.Spec, error) {
-	cfg := config.NewWithTestDefaults()
+	cfg := config.New()
 
 	imagingCfg := map[string]any{
 		"resampleFilter": "linear",
@@ -36,20 +34,16 @@ func NewTestResourceSpec() (*resources.Spec, error) {
 	}
 
 	cfg.Set("imaging", imagingCfg)
+	afs := afero.NewMemMapFs()
 
-	fs := hugofs.NewFrom(hugofs.NewBaseFileDecorator(afero.NewMemMapFs()), cfg)
-
-	s, err := helpers.NewPathSpec(fs, cfg, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	filecaches, err := filecache.NewCaches(s)
+	conf := testconfig.GetTestConfig(afs, cfg)
+	fs := hugofs.NewFrom(hugofs.NewBaseFileDecorator(afs), conf.BaseConfig())
+	s, err := helpers.NewPathSpec(fs, conf, nil)
 	if err != nil {
 		return nil, err
 	}
 
-	spec, err := resources.NewSpec(s, filecaches, nil, nil, nil, nil, output.DefaultFormats, media.DefaultTypes)
+	spec, err := resources.NewSpec(s, nil, nil, nil, nil, nil)
 	return spec, err
 }
 
diff --git a/resources/resource_transformers/js/build.go b/resources/resource_transformers/js/build.go
index 34bc2cc12..949cd4fcb 100644
--- a/resources/resource_transformers/js/build.go
+++ b/resources/resource_transformers/js/build.go
@@ -27,12 +27,12 @@ import (
 	"github.com/spf13/afero"
 
 	"github.com/gohugoio/hugo/hugofs"
+	"github.com/gohugoio/hugo/media"
 
 	"github.com/gohugoio/hugo/common/herrors"
 	"github.com/gohugoio/hugo/common/text"
 
 	"github.com/gohugoio/hugo/hugolib/filesystems"
-	"github.com/gohugoio/hugo/media"
 	"github.com/gohugoio/hugo/resources/internal"
 
 	"github.com/evanw/esbuild/pkg/api"
@@ -64,7 +64,7 @@ func (t *buildTransformation) Key() internal.ResourceTransformationKey {
 }
 
 func (t *buildTransformation) Transform(ctx *resources.ResourceTransformationCtx) error {
-	ctx.OutMediaType = media.JavascriptType
+	ctx.OutMediaType = media.Builtin.JavascriptType
 
 	opts, err := decodeOptions(t.optsm)
 	if err != nil {
@@ -83,7 +83,7 @@ func (t *buildTransformation) Transform(ctx *resources.ResourceTransformationCtx
 	}
 
 	opts.sourceDir = filepath.FromSlash(path.Dir(ctx.SourcePath))
-	opts.resolveDir = t.c.rs.WorkingDir // where node_modules gets resolved
+	opts.resolveDir = t.c.rs.Cfg.BaseConfig().WorkingDir // where node_modules gets resolved
 	opts.contents = string(src)
 	opts.mediaType = ctx.InMediaType
 
diff --git a/resources/resource_transformers/js/options.go b/resources/resource_transformers/js/options.go
index 8b40648e7..1f57709cd 100644
--- a/resources/resource_transformers/js/options.go
+++ b/resources/resource_transformers/js/options.go
@@ -337,20 +337,20 @@ func toBuildOptions(opts Options) (buildOptions api.BuildOptions, err error) {
 
 	mediaType := opts.mediaType
 	if mediaType.IsZero() {
-		mediaType = media.JavascriptType
+		mediaType = media.Builtin.JavascriptType
 	}
 
 	var loader api.Loader
 	switch mediaType.SubType {
 	// TODO(bep) ESBuild support a set of other loaders, but I currently fail
 	// to see the relevance. That may change as we start using this.
-	case media.JavascriptType.SubType:
+	case media.Builtin.JavascriptType.SubType:
 		loader = api.LoaderJS
-	case media.TypeScriptType.SubType:
+	case media.Builtin.TypeScriptType.SubType:
 		loader = api.LoaderTS
-	case media.TSXType.SubType:
+	case media.Builtin.TSXType.SubType:
 		loader = api.LoaderTSX
-	case media.JSXType.SubType:
+	case media.Builtin.JSXType.SubType:
 		loader = api.LoaderJSX
 	default:
 		err = fmt.Errorf("unsupported Media Type: %q", opts.mediaType)
diff --git a/resources/resource_transformers/js/options_test.go b/resources/resource_transformers/js/options_test.go
index 135164d18..a76a24caa 100644
--- a/resources/resource_transformers/js/options_test.go
+++ b/resources/resource_transformers/js/options_test.go
@@ -18,11 +18,10 @@ import (
 	"testing"
 
 	"github.com/gohugoio/hugo/hugofs"
+	"github.com/gohugoio/hugo/media"
 
 	"github.com/spf13/afero"
 
-	"github.com/gohugoio/hugo/media"
-
 	"github.com/evanw/esbuild/pkg/api"
 
 	qt "github.com/frankban/quicktest"
@@ -46,7 +45,7 @@ func TestOptionKey(t *testing.T) {
 func TestToBuildOptions(t *testing.T) {
 	c := qt.New(t)
 
-	opts, err := toBuildOptions(Options{mediaType: media.JavascriptType})
+	opts, err := toBuildOptions(Options{mediaType: media.Builtin.JavascriptType})
 
 	c.Assert(err, qt.IsNil)
 	c.Assert(opts, qt.DeepEquals, api.BuildOptions{
@@ -62,7 +61,7 @@ func TestToBuildOptions(t *testing.T) {
 		Target:    "es2018",
 		Format:    "cjs",
 		Minify:    true,
-		mediaType: media.JavascriptType,
+		mediaType: media.Builtin.JavascriptType,
 		AvoidTDZ:  true,
 	})
 	c.Assert(err, qt.IsNil)
@@ -79,7 +78,7 @@ func TestToBuildOptions(t *testing.T) {
 	})
 
 	opts, err = toBuildOptions(Options{
-		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.JavascriptType,
+		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.Builtin.JavascriptType,
 		SourceMap: "inline",
 	})
 	c.Assert(err, qt.IsNil)
@@ -97,7 +96,7 @@ func TestToBuildOptions(t *testing.T) {
 	})
 
 	opts, err = toBuildOptions(Options{
-		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.JavascriptType,
+		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.Builtin.JavascriptType,
 		SourceMap: "inline",
 	})
 	c.Assert(err, qt.IsNil)
@@ -115,7 +114,7 @@ func TestToBuildOptions(t *testing.T) {
 	})
 
 	opts, err = toBuildOptions(Options{
-		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.JavascriptType,
+		Target: "es2018", Format: "cjs", Minify: true, mediaType: media.Builtin.JavascriptType,
 		SourceMap: "external",
 	})
 	c.Assert(err, qt.IsNil)
diff --git a/resources/resource_transformers/minifier/minify.go b/resources/resource_transformers/minifier/minify.go
index c00d478af..872d284c6 100644
--- a/resources/resource_transformers/minifier/minify.go
+++ b/resources/resource_transformers/minifier/minify.go
@@ -30,7 +30,7 @@ type Client struct {
 // New creates a new Client given a specification. Note that it is the media types
 // configured for the site that is used to match files to the correct minifier.
 func New(rs *resources.Spec) (*Client, error) {
-	m, err := minifiers.New(rs.MediaTypes, rs.OutputFormats, rs.Cfg)
+	m, err := minifiers.New(rs.MediaTypes(), rs.OutputFormats(), rs.Cfg)
 	if err != nil {
 		return nil, err
 	}
diff --git a/resources/resource_transformers/postcss/postcss.go b/resources/resource_transformers/postcss/postcss.go
index b4234bcf8..376d72182 100644
--- a/resources/resource_transformers/postcss/postcss.go
+++ b/resources/resource_transformers/postcss/postcss.go
@@ -199,7 +199,7 @@ func (t *postcssTransformation) Transform(ctx *resources.ResourceTransformationC
 	stderr := io.MultiWriter(infoW, &errBuf)
 	cmdArgs = append(cmdArgs, hexec.WithStderr(stderr))
 	cmdArgs = append(cmdArgs, hexec.WithStdout(ctx.To))
-	cmdArgs = append(cmdArgs, hexec.WithEnviron(hugo.GetExecEnviron(t.rs.WorkingDir, t.rs.Cfg, t.rs.BaseFs.Assets.Fs)))
+	cmdArgs = append(cmdArgs, hexec.WithEnviron(hugo.GetExecEnviron(t.rs.Cfg.BaseConfig().WorkingDir, t.rs.Cfg, t.rs.BaseFs.Assets.Fs)))
 
 	cmd, err := ex.Npx(binaryName, cmdArgs...)
 	if err != nil {
@@ -382,10 +382,13 @@ func (imp *importResolver) resolve() (io.Reader, error) {
 // See https://www.w3schools.com/cssref/pr_import_rule.asp
 // We currently only support simple file imports, no urls, no media queries.
 // So this is OK:
-//     @import "navigation.css";
+//
+//	@import "navigation.css";
+//
 // This is not:
-//     @import url("navigation.css");
-//     @import "mobstyle.css" screen and (max-width: 768px);
+//
+//	@import url("navigation.css");
+//	@import "mobstyle.css" screen and (max-width: 768px);
 func (imp *importResolver) shouldImport(s string) bool {
 	if !strings.HasPrefix(s, importIdentifier) {
 		return false
diff --git a/resources/resource_transformers/tocss/dartsass/transform.go b/resources/resource_transformers/tocss/dartsass/transform.go
index fdf4d8ef3..61ea54437 100644
--- a/resources/resource_transformers/tocss/dartsass/transform.go
+++ b/resources/resource_transformers/tocss/dartsass/transform.go
@@ -59,7 +59,7 @@ func (t *transform) Key() internal.ResourceTransformationKey {
 }
 
 func (t *transform) Transform(ctx *resources.ResourceTransformationCtx) error {
-	ctx.OutMediaType = media.CSSType
+	ctx.OutMediaType = media.Builtin.CSSType
 
 	opts, err := decodeOptions(t.optsm)
 	if err != nil {
@@ -102,7 +102,7 @@ func (t *transform) Transform(ctx *resources.ResourceTransformationCtx) error {
 		}
 	}
 
-	if ctx.InMediaType.SubType == media.SASSType.SubType {
+	if ctx.InMediaType.SubType == media.Builtin.SASSType.SubType {
 		args.SourceSyntax = godartsass.SourceSyntaxSASS
 	}
 
diff --git a/resources/resource_transformers/tocss/scss/tocss.go b/resources/resource_transformers/tocss/scss/tocss.go
index 7e44f327e..1018ea02e 100644
--- a/resources/resource_transformers/tocss/scss/tocss.go
+++ b/resources/resource_transformers/tocss/scss/tocss.go
@@ -40,7 +40,7 @@ func Supports() bool {
 }
 
 func (t *toCSSTransformation) Transform(ctx *resources.ResourceTransformationCtx) error {
-	ctx.OutMediaType = media.CSSType
+	ctx.OutMediaType = media.Builtin.CSSType
 
 	var outName string
 	if t.options.from.TargetPath != "" {
@@ -124,14 +124,14 @@ func (t *toCSSTransformation) Transform(ctx *resources.ResourceTransformationCtx
 		return "", "", false
 	}
 
-	if ctx.InMediaType.SubType == media.SASSType.SubType {
+	if ctx.InMediaType.SubType == media.Builtin.SASSType.SubType {
 		options.to.SassSyntax = true
 	}
 
 	if options.from.EnableSourceMap {
 
 		options.to.SourceMapOptions.Filename = outName + ".map"
-		options.to.SourceMapOptions.Root = t.c.rs.WorkingDir
+		options.to.SourceMapOptions.Root = t.c.rs.Cfg.BaseConfig().WorkingDir
 
 		// Setting this to the relative input filename will get the source map
 		// more correct for the main entry path (main.scss typically), but
@@ -159,8 +159,8 @@ func (t *toCSSTransformation) Transform(ctx *resources.ResourceTransformationCtx
 	if options.from.EnableSourceMap && res.SourceMapContent != "" {
 		sourcePath := t.c.sfs.RealFilename(ctx.SourcePath)
 
-		if strings.HasPrefix(sourcePath, t.c.rs.WorkingDir) {
-			sourcePath = strings.TrimPrefix(sourcePath, t.c.rs.WorkingDir+helpers.FilePathSeparator)
+		if strings.HasPrefix(sourcePath, t.c.rs.Cfg.BaseConfig().WorkingDir) {
+			sourcePath = strings.TrimPrefix(sourcePath, t.c.rs.Cfg.BaseConfig().WorkingDir+helpers.FilePathSeparator)
 		}
 
 		// This needs to be Unix-style slashes, even on Windows.