package modernzconf

import (
	"gitgud.io/mike/mpv-manager/internal/scriptopts"
)

// Value types for Option.ValueType.
const (
	TypeBool   = scriptopts.TypeBool
	TypeInt    = scriptopts.TypeInt
	TypeFloat  = scriptopts.TypeFloat
	TypeString = scriptopts.TypeString
	TypeChoice = scriptopts.TypeChoice
)

// Option describes a curated, editable modernz.conf option.
type Option struct {
	Key          string
	Label        string
	Default      string
	Recommended  string
	Description  string
	ValueType    string   // "bool" | "int" | "float" | "string" | "choice"
	Choices      []string // for ValueType == "choice"
	ChoiceLabels map[string]string
	Min, Max     float64 // bounds for int/float
}

// Managed install defaults override the upstream ModernZ defaults where the
// manager deliberately provides a more predictable cross-resolution setup.
const (
	ManagedVidscaleDefault        = "no"
	ManagedScaleWindowedDefault   = "1.0"
	ManagedScaleFullscreenDefault = "1.0"
)

var managedInstallDefaults = []struct {
	key   string
	value string
}{
	{key: "vidscale", value: ManagedVidscaleDefault},
	{key: "scalewindowed", value: ManagedScaleWindowedDefault},
	{key: "scalefullscreen", value: ManagedScaleFullscreenDefault},
}

// knownOptions is the curated set of editable modernz.conf options, based on
// the default modernz.conf shipped by ModernZ (and installed by mpv-manager).
// Bool options use the file's native yes/no values.
var knownOptions = []Option{
	{Key: "language", Default: "default", Description: "Interface language ('default' or a ModernZ translation code)", ValueType: TypeString},
	{Key: "layout", Default: "default", Description: "OSC layout style", ValueType: TypeChoice, Choices: []string{"default", "compact", "mini", "seekbar"}},
	{Key: "icon_theme", Default: "fluent", Description: "Icon theme", ValueType: TypeChoice, Choices: []string{"fluent", "material"}},
	{
		Key:         "vidscale",
		Label:       "Scaling behavior",
		Default:     "auto",
		Recommended: ManagedVidscaleDefault,
		Description: "Choose whether ModernZ stays a consistent size or grows and shrinks with the player window",
		ValueType:   TypeChoice,
		Choices:     []string{"no", "auto", "yes"},
		ChoiceLabels: map[string]string{
			"no":   "Consistent size (recommended)",
			"auto": "Follow mpv setting",
			"yes":  "Scale with player window",
		},
	},
	{
		Key:         "scalewindowed",
		Label:       "Windowed UI size",
		Default:     "1.0",
		Recommended: ManagedScaleWindowedDefault,
		Description: "Size multiplier while windowed (1.0 = 100%; try 1.25, 1.5, or 2.0 for HiDPI displays)",
		ValueType:   TypeFloat,
		Min:         0.1,
		Max:         5.0,
	},
	{
		Key:         "scalefullscreen",
		Label:       "Fullscreen UI size",
		Default:     "1.0",
		Recommended: ManagedScaleFullscreenDefault,
		Description: "Size multiplier in fullscreen; keep this equal to Windowed UI size to avoid a size jump",
		ValueType:   TypeFloat,
		Min:         0.1,
		Max:         5.0,
	},
	{Key: "window_top_bar", Default: "auto", Description: "Show the top bar in borderless/fullscreen mode", ValueType: TypeChoice, Choices: []string{"auto", "yes", "no"}},
	{Key: "idlescreen", Default: "yes", Description: "Show the mpv logo when idle", ValueType: TypeBool},
	{Key: "showwindowed", Default: "yes", Description: "Show the OSC when windowed", ValueType: TypeBool},
	{Key: "showfullscreen", Default: "yes", Description: "Show the OSC in fullscreen", ValueType: TypeBool},
	{Key: "hidetimeout", Default: "1500", Description: "Milliseconds before the OSC hides without mouse movement", ValueType: TypeInt, Min: 0, Max: 60000},
	{Key: "show_title", Default: "yes", Description: "Show the media title above the seekbar", ValueType: TypeBool},
	{Key: "title_font_size", Default: "24", Description: "Font size of the title text", ValueType: TypeInt, Min: 8, Max: 72},
	{Key: "time_format", Default: "dynamic", Description: "Time display format (dynamic MM:SS or fixed HH:MM:SS)", ValueType: TypeChoice, Choices: []string{"dynamic", "fixed"}},
	{Key: "seekbar_height", Default: "medium", Description: "Seekbar height preset", ValueType: TypeChoice, Choices: []string{"small", "medium", "large", "xlarge"}},
	{Key: "osc_color", Default: "#000000", Description: "Accent color of the OSC and title bar (hex)", ValueType: TypeString},
	{Key: "seekbarfg_color", Default: "#FF8232", Description: "Color of the seekbar progress (hex)", ValueType: TypeString},
	{Key: "volume_control", Default: "yes", Description: "Show the mute button and volume slider", ValueType: TypeBool},
	{Key: "volume_control_type", Default: "linear", Description: "Volume slider scale type", ValueType: TypeChoice, Choices: []string{"linear", "logarithmic"}},
	{Key: "speed_button", Default: "yes", Description: "Show the speed control button", ValueType: TypeBool},
	{Key: "playlist_button", Default: "yes", Description: "Show the playlist button", ValueType: TypeBool},
	{Key: "screenshot_button", Default: "yes", Description: "Show the screenshot button", ValueType: TypeBool},
	{Key: "jump_buttons", Default: "yes", Description: "Show the jump backward/forward buttons", ValueType: TypeBool},
	{Key: "tooltip_hints", Default: "yes", Description: "Show tooltips for buttons", ValueType: TypeBool},
}

// spec configures the shared script-opts machinery with the ModernZ file
// name and the core view of the curated catalog.
var spec = &scriptopts.Spec{Name: confFileName, Options: specOptions()}

// specOptions maps the curated catalog onto the shared core option shape;
// the extra ModernZ metadata (Label, Recommended, ChoiceLabels) is
// presentation-only and not needed by the core.
func specOptions() []scriptopts.Option {
	options := make([]scriptopts.Option, len(knownOptions))
	for i, opt := range knownOptions {
		options[i] = scriptopts.Option{
			Key:         opt.Key,
			Default:     opt.Default,
			Description: opt.Description,
			ValueType:   opt.ValueType,
			Choices:     opt.Choices,
			Min:         opt.Min,
			Max:         opt.Max,
		}
	}
	return options
}

// KnownOptions returns the curated list of editable modernz.conf options.
func KnownOptions() []Option {
	options := make([]Option, len(knownOptions))
	for i, opt := range knownOptions {
		options[i] = opt
		options[i].Choices = append([]string(nil), opt.Choices...)
		if opt.ChoiceLabels != nil {
			options[i].ChoiceLabels = make(map[string]string, len(opt.ChoiceLabels))
			for value, label := range opt.ChoiceLabels {
				options[i].ChoiceLabels[value] = label
			}
		}
	}
	return options
}

// ValidateValue checks value against the type and constraints of the known
// option key. Unknown keys and values containing newlines are rejected.
func ValidateValue(key, value string) error {
	return scriptopts.ValidateValue(spec, key, value)
}