package dto

import (
	"encoding/json"
	"fmt"
	"net/url"
	"path"

	"browser.local/platform/domain"
)

type RuntimeTargetBody struct {
	OS   string `json:"os"`
	Arch string `json:"arch"`
}

type RuntimeDiscoveryProbeBody struct {
	Key       string   `json:"key"`
	Kind      string   `json:"kind"`
	TargetKey string   `json:"targetKey"`
	Required  bool     `json:"required,omitempty"`
	Expected  string   `json:"expected,omitempty"`
	Platforms []string `json:"platforms,omitempty"`
}

type RuntimeLifecycleProfileBody struct {
	Key              string                     `json:"key"`
	Mode             string                     `json:"mode"`
	Capabilities     []string                   `json:"capabilities"`
	ActionRefs       PluginLifecycleActionsBody `json:"actionRefs,omitempty"`
	TransportKeys    []string                   `json:"transportKeys,omitempty"`
	ClientManagerRef json.RawMessage            `json:"clientManagerRef,omitempty"`
	DLLExtensionRefs []string                   `json:"dllExtensionRefs,omitempty"`
	Platforms        []string                   `json:"platforms,omitempty"`
}

type RuntimeDependencyProbeBody struct {
	Key            string   `json:"key"`
	Kind           string   `json:"kind"`
	TargetKey      string   `json:"targetKey"`
	Required       bool     `json:"required,omitempty"`
	MinimumVersion string   `json:"minimumVersion,omitempty"`
	Platforms      []string `json:"platforms,omitempty"`
}

type RuntimeInstallStepBody struct {
	Type           string `json:"type"`
	TargetKey      string `json:"targetKey"`
	PackageManager string `json:"packageManager,omitempty"`
	PackageName    string `json:"packageName,omitempty"`
	Version        string `json:"version,omitempty"`
	DownloadRef    string `json:"downloadRef,omitempty"`
	Checksum       string `json:"checksum,omitempty"`
}

type RuntimeInstallPlanBody struct {
	Key       string                   `json:"key"`
	Title     string                   `json:"title"`
	Platforms []string                 `json:"platforms,omitempty"`
	Steps     []RuntimeInstallStepBody `json:"steps"`
}

type RuntimeServerConfigMappingBody struct {
	FieldKey  string `json:"fieldKey"`
	ConfigKey string `json:"configKey"`
	ValueType string `json:"valueType"`
	Required  bool   `json:"required,omitempty"`
}

type RuntimeServerDiscoveryMarkerBody struct {
	Key       string `json:"key"`
	Kind      string `json:"kind"`
	TargetKey string `json:"targetKey"`
	Expected  string `json:"expected,omitempty"`
	Required  bool   `json:"required,omitempty"`
}

type RuntimeServerVerificationCheckBody struct {
	Key       string `json:"key"`
	Kind      string `json:"kind"`
	TargetKey string `json:"targetKey"`
	Required  bool   `json:"required,omitempty"`
}

type RuntimeServerPrerequisiteBody struct {
	Key  string `json:"key"`
	Kind string `json:"kind"`
}

type RuntimeLogSourceBody struct {
	Key           string `json:"key"`
	Kind          string `json:"kind"`
	TargetKey     string `json:"targetKey,omitempty"`
	StreamKey     string `json:"streamKey"`
	CursorKind    string `json:"cursorKind,omitempty"`
	RetentionDays int    `json:"retentionDays,omitempty"`
}

type RuntimeTransportProfileBody struct {
	Key          string   `json:"key"`
	Kind         string   `json:"kind"`
	TargetKey    string   `json:"targetKey,omitempty"`
	Capabilities []string `json:"capabilities"`
}

type RuntimeDataTargetBody struct {
	Key           string   `json:"key"`
	Kind          string   `json:"kind"`
	TransportKey  string   `json:"transportKey"`
	SourceRootKey string   `json:"sourceRootKey"`
	SourcePath    string   `json:"sourcePath"`
	WorkspaceKey  string   `json:"workspaceKey"`
	RefreshPolicy string   `json:"refreshPolicy"`
	MaxBytes      int64    `json:"maxBytes"`
	Platforms     []string `json:"platforms,omitempty"`
}

type RuntimeRepositoryBody struct {
	URL            string `json:"url"`
	RevisionPolicy string `json:"revisionPolicy"`
	Branch         string `json:"branch,omitempty"`
	Tag            string `json:"tag,omitempty"`
	Revision       string `json:"revision,omitempty"`
}

type RuntimeBuildBody struct {
	System       string `json:"system"`
	WorkspaceRef string `json:"workspaceRef,omitempty"`
	EntryRef     string `json:"entryRef,omitempty"`
}

type RuntimeConfigTemplateBody struct {
	Key         string `json:"key"`
	TemplateRef string `json:"templateRef"`
	OutputRef   string `json:"outputRef"`
}

type RuntimeDLLExtensionProfileBody struct {
	Key                      string              `json:"key"`
	DisplayName              string              `json:"displayName"`
	Kind                     string              `json:"kind"`
	Activation               string              `json:"activation"`
	Version                  string              `json:"version"`
	ReleaseState             string              `json:"releaseState"`
	ReleaseURL               string              `json:"releaseUrl,omitempty"`
	ReleaseHost              string              `json:"releaseHost,omitempty"`
	ReleaseFilename          string              `json:"releaseFilename,omitempty"`
	Checksum                 string              `json:"checksum,omitempty"`
	SizeBytes                int64               `json:"sizeBytes,omitempty"`
	TargetKey                string              `json:"targetKey"`
	ModKey                   string              `json:"modKey"`
	DLLRef                   string              `json:"dllRef"`
	TargetExecutableChecksum string              `json:"targetExecutableChecksum,omitempty"`
	UE4SSABI                 string              `json:"ue4ssAbi,omitempty"`
	SupportedTargets         []RuntimeTargetBody `json:"supportedTargets"`
	UpdateOnStart            bool                `json:"updateOnStart"`
	RCONPort                 int                 `json:"rconPort"`
}

// RuntimeDLLExtensionProfileResponseBody is the browser-safe projection of a
// declared DLL extension. The immutable deployment path, RCON port, and full
// release URL remain internal to the manifest/start-job contracts.
type RuntimeDLLExtensionProfileResponseBody struct {
	Key                      string              `json:"key"`
	DisplayName              string              `json:"displayName"`
	Kind                     string              `json:"kind"`
	Activation               string              `json:"activation"`
	Version                  string              `json:"version"`
	ReleaseState             string              `json:"releaseState"`
	ReleaseHost              string              `json:"releaseHost,omitempty"`
	ReleaseFilename          string              `json:"releaseFilename,omitempty"`
	Checksum                 string              `json:"checksum,omitempty"`
	SizeBytes                int64               `json:"sizeBytes,omitempty"`
	TargetExecutableChecksum string              `json:"targetExecutableChecksum,omitempty"`
	UE4SSABI                 string              `json:"ue4ssAbi,omitempty"`
	SupportedTargets         []RuntimeTargetBody `json:"supportedTargets"`
	UpdateOnStart            bool                `json:"updateOnStart"`
}

type RuntimeDLLExtensionPlanBody struct {
	Key                      string `json:"key"`
	Version                  string `json:"version"`
	ReleaseURL               string `json:"releaseUrl"`
	Checksum                 string `json:"checksum"`
	SizeBytes                int64  `json:"sizeBytes"`
	TargetKey                string `json:"targetKey"`
	ModKey                   string `json:"modKey"`
	DLLRef                   string `json:"dllRef"`
	TargetExecutableChecksum string `json:"targetExecutableChecksum"`
	UE4SSABI                 string `json:"ue4ssAbi"`
	RCONPort                 int    `json:"rconPort"`
}

type GamePluginRuntimeProfilesBody struct {
	Discovery         []RuntimeDiscoveryProbeBody      `json:"discovery,omitempty"`
	LifecycleProfiles []RuntimeLifecycleProfileBody    `json:"lifecycleProfiles,omitempty"`
	DependencyProbes  []RuntimeDependencyProbeBody     `json:"dependencyProbes,omitempty"`
	InstallPlans      []RuntimeInstallPlanBody         `json:"installPlans,omitempty"`
	ServerDeployments json.RawMessage                  `json:"serverDeployments,omitempty"`
	LogSources        []RuntimeLogSourceBody           `json:"logSources,omitempty"`
	TransportProfiles []RuntimeTransportProfileBody    `json:"transportProfiles,omitempty"`
	DataTargets       []RuntimeDataTargetBody          `json:"dataTargets,omitempty"`
	ClientManagers    json.RawMessage                  `json:"clientManagers,omitempty"`
	DLLExtensions     []RuntimeDLLExtensionProfileBody `json:"dllExtensions,omitempty"`
}

func (body GamePluginRuntimeProfilesBody) UnsupportedLegacyProfileViolations(prefix string) []string {
	var violations []string
	if len(body.ClientManagers) > 0 {
		violations = append(violations, prefix+".clientManagers is no longer supported")
	}
	for i, profile := range body.LifecycleProfiles {
		if len(profile.ClientManagerRef) > 0 {
			violations = append(violations, fmt.Sprintf("%s.lifecycleProfiles[%d].clientManagerRef is no longer supported", prefix, i))
		}
	}
	if len(body.ServerDeployments) > 0 {
		violations = append(violations, prefix+".serverDeployments is no longer supported")
	}
	return violations
}

// GamePluginRuntimeProfilesResponseBody is intentionally distinct from the
// manifest input shape so browser responses cannot accidentally include
// machine-local DLL placement or RCON activation details.
type GamePluginRuntimeProfilesResponseBody struct {
	Discovery         []RuntimeDiscoveryProbeBody              `json:"discovery,omitempty"`
	LifecycleProfiles []RuntimeLifecycleProfileBody            `json:"lifecycleProfiles,omitempty"`
	DependencyProbes  []RuntimeDependencyProbeBody             `json:"dependencyProbes,omitempty"`
	InstallPlans      []RuntimeInstallPlanBody                 `json:"installPlans,omitempty"`
	LogSources        []RuntimeLogSourceBody                   `json:"logSources,omitempty"`
	TransportProfiles []RuntimeTransportProfileBody            `json:"transportProfiles,omitempty"`
	DataTargets       []RuntimeDataTargetBody                  `json:"dataTargets,omitempty"`
	DLLExtensions     []RuntimeDLLExtensionProfileResponseBody `json:"dllExtensions,omitempty"`
}

func (body GamePluginRuntimeProfilesBody) ToDomain() domain.GamePluginRuntimeProfiles {
	profiles := domain.GamePluginRuntimeProfiles{}
	for _, item := range body.Discovery {
		profiles.Discovery = append(profiles.Discovery, domain.RuntimeDiscoveryProbe{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Required: item.Required, Expected: item.Expected, Platforms: domain.CopyStringSlice(item.Platforms)})
	}
	for _, item := range body.LifecycleProfiles {
		profiles.LifecycleProfiles = append(profiles.LifecycleProfiles, domain.RuntimeLifecycleProfile{Key: item.Key, Mode: item.Mode, Capabilities: domain.CopyStringSlice(item.Capabilities), ActionRefs: item.ActionRefs.ToDomain(), TransportKeys: domain.CopyStringSlice(item.TransportKeys), DLLExtensionRefs: domain.CopyStringSlice(item.DLLExtensionRefs), Platforms: domain.CopyStringSlice(item.Platforms)})
	}
	for _, item := range body.DependencyProbes {
		profiles.DependencyProbes = append(profiles.DependencyProbes, domain.RuntimeDependencyProbe{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Required: item.Required, MinimumVersion: item.MinimumVersion, Platforms: domain.CopyStringSlice(item.Platforms)})
	}
	for _, item := range body.InstallPlans {
		plan := domain.RuntimeInstallPlan{Key: item.Key, Title: item.Title, Platforms: domain.CopyStringSlice(item.Platforms)}
		for _, step := range item.Steps {
			plan.Steps = append(plan.Steps, domain.RuntimeInstallStep{Type: step.Type, TargetKey: step.TargetKey, PackageManager: step.PackageManager, PackageName: step.PackageName, Version: step.Version, DownloadRef: step.DownloadRef, Checksum: step.Checksum})
		}
		profiles.InstallPlans = append(profiles.InstallPlans, plan)
	}
	for _, item := range body.LogSources {
		profiles.LogSources = append(profiles.LogSources, domain.RuntimeLogSource{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, StreamKey: item.StreamKey, CursorKind: item.CursorKind, RetentionDays: item.RetentionDays})
	}
	for _, item := range body.TransportProfiles {
		profiles.TransportProfiles = append(profiles.TransportProfiles, domain.RuntimeTransportProfile{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Capabilities: domain.CopyStringSlice(item.Capabilities)})
	}
	for _, item := range body.DataTargets {
		profiles.DataTargets = append(profiles.DataTargets, domain.RuntimeDataTarget{Key: item.Key, Kind: item.Kind, TransportKey: item.TransportKey, SourceRootKey: item.SourceRootKey, SourcePath: item.SourcePath, WorkspaceKey: item.WorkspaceKey, RefreshPolicy: item.RefreshPolicy, MaxBytes: item.MaxBytes, Platforms: domain.CopyStringSlice(item.Platforms)})
	}
	for _, item := range body.DLLExtensions {
		extension := domain.RuntimeDLLExtensionProfile{Key: item.Key, DisplayName: item.DisplayName, Kind: item.Kind, Activation: item.Activation, Version: item.Version, ReleaseState: item.ReleaseState, ReleaseURL: item.ReleaseURL, Checksum: item.Checksum, SizeBytes: item.SizeBytes, TargetKey: item.TargetKey, ModKey: item.ModKey, DLLRef: item.DLLRef, TargetExecutableChecksum: item.TargetExecutableChecksum, UE4SSABI: item.UE4SSABI, UpdateOnStart: item.UpdateOnStart, RCONPort: item.RCONPort}
		for _, target := range item.SupportedTargets {
			extension.SupportedTargets = append(extension.SupportedTargets, domain.RuntimeTarget{OS: target.OS, Arch: target.Arch})
		}
		profiles.DLLExtensions = append(profiles.DLLExtensions, extension)
	}
	return profiles
}

func runtimeProfilesFromDomain(profiles domain.GamePluginRuntimeProfiles) GamePluginRuntimeProfilesResponseBody {
	profiles = domain.CopyGamePluginRuntimeProfiles(profiles)
	body := GamePluginRuntimeProfilesResponseBody{}
	for _, item := range profiles.Discovery {
		body.Discovery = append(body.Discovery, RuntimeDiscoveryProbeBody{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Required: item.Required, Expected: item.Expected, Platforms: item.Platforms})
	}
	for _, item := range profiles.LifecycleProfiles {
		body.LifecycleProfiles = append(body.LifecycleProfiles, RuntimeLifecycleProfileBody{Key: item.Key, Mode: item.Mode, Capabilities: item.Capabilities, ActionRefs: lifecycleActionsFromDomain(item.ActionRefs), TransportKeys: item.TransportKeys, DLLExtensionRefs: item.DLLExtensionRefs, Platforms: item.Platforms})
	}
	for _, item := range profiles.DependencyProbes {
		body.DependencyProbes = append(body.DependencyProbes, RuntimeDependencyProbeBody{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Required: item.Required, MinimumVersion: item.MinimumVersion, Platforms: item.Platforms})
	}
	for _, item := range profiles.InstallPlans {
		plan := RuntimeInstallPlanBody{Key: item.Key, Title: item.Title, Platforms: item.Platforms}
		for _, step := range item.Steps {
			plan.Steps = append(plan.Steps, RuntimeInstallStepBody{Type: step.Type, TargetKey: step.TargetKey, PackageManager: step.PackageManager, PackageName: step.PackageName, Version: step.Version, DownloadRef: step.DownloadRef, Checksum: step.Checksum})
		}
		body.InstallPlans = append(body.InstallPlans, plan)
	}
	for _, item := range profiles.LogSources {
		body.LogSources = append(body.LogSources, RuntimeLogSourceBody{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, StreamKey: item.StreamKey, CursorKind: item.CursorKind, RetentionDays: item.RetentionDays})
	}
	for _, item := range profiles.TransportProfiles {
		body.TransportProfiles = append(body.TransportProfiles, RuntimeTransportProfileBody{Key: item.Key, Kind: item.Kind, TargetKey: item.TargetKey, Capabilities: item.Capabilities})
	}
	for _, item := range profiles.DataTargets {
		body.DataTargets = append(body.DataTargets, RuntimeDataTargetBody{Key: item.Key, Kind: item.Kind, TransportKey: item.TransportKey, SourceRootKey: item.SourceRootKey, SourcePath: item.SourcePath, WorkspaceKey: item.WorkspaceKey, RefreshPolicy: item.RefreshPolicy, MaxBytes: item.MaxBytes, Platforms: item.Platforms})
	}
	for _, item := range profiles.DLLExtensions {
		host, filename := safeDLLReleaseLocation(item.ReleaseURL)
		extension := RuntimeDLLExtensionProfileResponseBody{Key: item.Key, DisplayName: item.DisplayName, Kind: item.Kind, Activation: item.Activation, Version: item.Version, ReleaseState: item.ReleaseState, ReleaseHost: host, ReleaseFilename: filename, Checksum: safeDLLChecksumPrefix(item.Checksum), SizeBytes: item.SizeBytes, TargetExecutableChecksum: safeDLLChecksumPrefix(item.TargetExecutableChecksum), UE4SSABI: item.UE4SSABI, UpdateOnStart: item.UpdateOnStart}
		for _, target := range item.SupportedTargets {
			extension.SupportedTargets = append(extension.SupportedTargets, RuntimeTargetBody{OS: target.OS, Arch: target.Arch})
		}
		body.DLLExtensions = append(body.DLLExtensions, extension)
	}
	return body
}

func dllExtensionPlansFromDomain(plans []domain.RuntimeDLLExtensionPlan) []RuntimeDLLExtensionPlanBody {
	items := make([]RuntimeDLLExtensionPlanBody, 0, len(plans))
	for _, item := range plans {
		items = append(items, RuntimeDLLExtensionPlanBody{Key: item.Key, Version: item.Version, ReleaseURL: item.ReleaseURL, Checksum: item.Checksum, SizeBytes: item.SizeBytes, TargetKey: item.TargetKey, ModKey: item.ModKey, DLLRef: item.DLLRef, TargetExecutableChecksum: item.TargetExecutableChecksum, UE4SSABI: item.UE4SSABI, RCONPort: item.RCONPort})
	}
	return items
}

func safeDLLReleaseLocation(value string) (string, string) {
	parsed, err := url.Parse(value)
	if err != nil || parsed == nil {
		return "", ""
	}
	return parsed.Hostname(), path.Base(parsed.Path)
}

func safeDLLChecksumPrefix(value string) string {
	if len(value) <= len("sha256:")+12 {
		return value
	}
	return value[:len("sha256:")+12] + "…"
}