// Copyright 2024, Command Line Inc.
// SPDX-License-Identifier: Apache-2.0

package clientservice

import (
	"context"
	"fmt"
	"log"
	"time"

	"github.com/wavetermdev/waveterm/pkg/remote/conncontroller"
	"github.com/wavetermdev/waveterm/pkg/util/utilfn"
	"github.com/wavetermdev/waveterm/pkg/waveobj"
	"github.com/wavetermdev/waveterm/pkg/wcloud"
	"github.com/wavetermdev/waveterm/pkg/wconfig"
	"github.com/wavetermdev/waveterm/pkg/wcore"
	"github.com/wavetermdev/waveterm/pkg/wlayout"
	"github.com/wavetermdev/waveterm/pkg/wshrpc"
	"github.com/wavetermdev/waveterm/pkg/wsl"
	"github.com/wavetermdev/waveterm/pkg/wstore"
)

type ClientService struct{}

const DefaultTimeout = 2 * time.Second

func (cs *ClientService) GetClientData() (*waveobj.Client, error) {
	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
	defer cancelFn()
	clientData, err := wstore.DBGetSingleton[*waveobj.Client](ctx)
	if err != nil {
		return nil, fmt.Errorf("error getting client data: %w", err)
	}
	return clientData, nil
}

func (cs *ClientService) GetWorkspace(workspaceId string) (*waveobj.Workspace, error) {
	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
	defer cancelFn()
	ws, err := wstore.DBGet[*waveobj.Workspace](ctx, workspaceId)
	if err != nil {
		return nil, fmt.Errorf("error getting workspace: %w", err)
	}
	return ws, nil
}

func (cs *ClientService) GetTab(tabId string) (*waveobj.Tab, error) {
	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
	defer cancelFn()
	tab, err := wstore.DBGet[*waveobj.Tab](ctx, tabId)
	if err != nil {
		return nil, fmt.Errorf("error getting tab: %w", err)
	}
	return tab, nil
}

func (cs *ClientService) GetWindow(windowId string) (*waveobj.Window, error) {
	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
	defer cancelFn()
	window, err := wstore.DBGet[*waveobj.Window](ctx, windowId)
	if err != nil {
		return nil, fmt.Errorf("error getting window: %w", err)
	}
	return window, nil
}

func (cs *ClientService) MakeWindow(ctx context.Context) (*waveobj.Window, error) {
	window, err := wcore.CreateWindow(ctx, nil)
	if err != nil {
		return nil, err
	}
	err = wlayout.BootstrapNewWindowLayout(ctx, window)
	if err != nil {
		return window, err
	}
	return window, nil
}

func (cs *ClientService) GetAllConnStatus(ctx context.Context) ([]wshrpc.ConnStatus, error) {
	sshStatuses := conncontroller.GetAllConnStatus()
	wslStatuses := wsl.GetAllConnStatus()
	return append(sshStatuses, wslStatuses...), nil
}

// moves the window to the front of the windowId stack
func (cs *ClientService) FocusWindow(ctx context.Context, windowId string) error {
	client, err := cs.GetClientData()
	if err != nil {
		return err
	}
	winIdx := utilfn.SliceIdx(client.WindowIds, windowId)
	if winIdx == -1 {
		return nil
	}
	client.WindowIds = utilfn.MoveSliceIdxToFront(client.WindowIds, winIdx)
	return wstore.DBUpdate(ctx, client)
}

func (cs *ClientService) AgreeTos(ctx context.Context) (waveobj.UpdatesRtnType, error) {
	ctx = waveobj.ContextWithUpdates(ctx)
	clientData, err := wstore.DBGetSingleton[*waveobj.Client](ctx)
	if err != nil {
		return nil, fmt.Errorf("error getting client data: %w", err)
	}
	timestamp := time.Now().UnixMilli()
	clientData.TosAgreed = timestamp
	err = wstore.DBUpdate(ctx, clientData)
	if err != nil {
		return nil, fmt.Errorf("error updating client data: %w", err)
	}
	wlayout.BootstrapStarterLayout(ctx)
	return waveobj.ContextGetUpdatesRtn(ctx), nil
}

func sendNoTelemetryUpdate(telemetryEnabled bool) {
	ctx, cancelFn := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancelFn()
	clientData, err := wstore.DBGetSingleton[*waveobj.Client](ctx)
	if err != nil {
		log.Printf("telemetry update: error getting client data: %v\n", err)
		return
	}
	if clientData == nil {
		log.Printf("telemetry update: client data is nil\n")
		return
	}
	err = wcloud.SendNoTelemetryUpdate(ctx, clientData.OID, !telemetryEnabled)
	if err != nil {
		log.Printf("[error] sending no-telemetry update: %v\n", err)
		return
	}
}

func (cs *ClientService) TelemetryUpdate(ctx context.Context, telemetryEnabled bool) error {
	meta := waveobj.MetaMapType{
		wconfig.ConfigKey_TelemetryEnabled: telemetryEnabled,
	}
	err := wconfig.SetBaseConfigValue(meta)
	if err != nil {
		return fmt.Errorf("error setting telemetry value: %w", err)
	}
	go sendNoTelemetryUpdate(telemetryEnabled)
	return nil
}
