const TemplateVersion = 2

type Category int

const (
	CategoryLayout Category = iota + 1
	CategoryBaseof
	CategoryMarkup
	CategoryShortcode
	CategoryPartial
	// Internal categories
	CategoryServer
	CategoryHugo
)

type ParseConfig struct {
	Version int
}

type ParseInfo struct {
	// Set for shortcode templates with any {{ .Inner }}
	IsInner bool

	// Set for partials with a return statement.
	HasReturn bool

	// Config extracted from template.
	Config ParseConfig
}

type PathTemplateDescriptor struct {
	Path string
	Desc TemplateDescriptor
}

type SiteOptions struct {
	Site          page.Site
	TemplateFuncs map[string]any
}

type StoreOptions struct {
	// The filesystem to use.
	Fs afero.Fs

	// The logger to use.
	Log loggers.Logger

	// The path parser to use.
	PathParser *paths.PathParser

	// Set when --enableTemplateMetrics is set.
	Metrics metrics.Provider

	// All configured output formats.
	OutputFormats output.Formats

	// All configured media types.
	MediaTypes media.Types

	// The default content language.
	DefaultContentLanguage string

	// The default output format.
	DefaultOutputFormat string

	// Taxonomy config.
	TaxonomySingularPlural map[string]string

	// Whether we are in watch or server mode.
	Watching bool
	// contains filtered or unexported fields
}

type SubCategory int

const (
	SubCategoryMain     SubCategory = iota
	SubCategoryEmbedded             // Internal Hugo templates
	SubCategoryInline               // Inline partials
)

type TemplInfo struct {

	// PathInfo info.
	PathInfo *paths.Path

	// Set when backed by a file.
	Fi hugofs.FileMetaInfo

	// The parsed template.
	// Note that any baseof template will be applied later.
	Template tpl.Template

	// The descriptior that this template represents.
	D TemplateDescriptor

	// Parser state.
	ParseInfo ParseInfo
	// contains filtered or unexported fields
}

type TemplWithBaseApplied struct {
	// The template that's overlaid on top of the base template.
	Overlay *TemplInfo
	// The base template.
	Base *TemplInfo
	// This is the final template that can be used to render a page.
	Template *TemplInfo
}

type TemplateDescriptor struct {
	// Group 1.
	Kind               string // page, home, section, taxonomy, term (and only those)
	LayoutFromTemplate string // list, single, all,mycustomlayout
	LayoutFromUser     string //  custom layout set in front matter, e.g. list, single, all, mycustomlayout

	// Group 2.
	OutputFormat string // rss, csv ...
	MediaType    string // text/html, text/plain, ...
	Lang         string // en, nn, fr, ...

	Variant1 string // contextual variant, e.g. "link" in render hooks."
	Variant2 string // contextual variant, e.g. "id" in render.

	// Misc.
	LayoutFromUserMustMatch bool // If set, we only look for the exact layout.
	IsPlainText             bool // Whether this is a plain text template.
}

type TemplateQuery struct {
	// The path to walk down to.
	Path string

	// The name to look for. Used for shortcode queries.
	Name string

	// The category to look in.
	Category Category

	// The template descriptor to match against.
	Desc TemplateDescriptor

	// Whether to even consider this candidate.
	Consider func(candidate *TemplInfo) bool
}

type TemplateStore struct {
	// contains filtered or unexported fields
}

type TemplateStoreProvider interface {
	GetTemplateStore() *TemplateStore
}

type TextTemplatHandler interface {
	ExecuteWithContext(ctx context.Context, ti *TemplInfo, wr io.Writer, data any) error
	TextLookup(name string) *TemplInfo
	TextParse(name, tpl string) (*TemplInfo, error)
}