waveterm/pkg/wstore/wstore.go
2024-06-19 19:10:53 -07:00

429 lines
11 KiB
Go

// Copyright 2024, Command Line Inc.
// SPDX-License-Identifier: Apache-2.0
package wstore
import (
"bytes"
"context"
"fmt"
"log"
"time"
"github.com/google/uuid"
"github.com/wavetermdev/thenextwave/pkg/waveobj"
)
var waveObjUpdateKey = struct{}{}
type UpdatesRtnType = []WaveObjUpdate
func init() {
for _, rtype := range AllWaveObjTypes() {
waveobj.RegisterType(rtype)
}
}
type contextUpdatesType struct {
UpdatesStack []map[waveobj.ORef]WaveObjUpdate
}
func dumpUpdateStack(updates *contextUpdatesType) {
log.Printf("dumpUpdateStack len:%d\n", len(updates.UpdatesStack))
for idx, update := range updates.UpdatesStack {
var buf bytes.Buffer
buf.WriteString(fmt.Sprintf(" [%d]:", idx))
for k := range update {
buf.WriteString(fmt.Sprintf(" %s:%s", k.OType, k.OID))
}
buf.WriteString("\n")
log.Print(buf.String())
}
}
func ContextWithUpdates(ctx context.Context) context.Context {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal != nil {
return ctx
}
return context.WithValue(ctx, waveObjUpdateKey, &contextUpdatesType{
UpdatesStack: []map[waveobj.ORef]WaveObjUpdate{make(map[waveobj.ORef]WaveObjUpdate)},
})
}
func ContextGetUpdates(ctx context.Context) map[waveobj.ORef]WaveObjUpdate {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return nil
}
updates := updatesVal.(*contextUpdatesType)
if len(updates.UpdatesStack) == 1 {
return updates.UpdatesStack[0]
}
rtn := make(map[waveobj.ORef]WaveObjUpdate)
for _, update := range updates.UpdatesStack {
for k, v := range update {
rtn[k] = v
}
}
return rtn
}
func ContextGetUpdatesRtn(ctx context.Context) UpdatesRtnType {
updatesMap := ContextGetUpdates(ctx)
if updatesMap == nil {
return nil
}
rtn := make(UpdatesRtnType, 0, len(updatesMap))
for _, v := range updatesMap {
rtn = append(rtn, v)
}
return rtn
}
func ContextGetUpdate(ctx context.Context, oref waveobj.ORef) *WaveObjUpdate {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return nil
}
updates := updatesVal.(*contextUpdatesType)
for idx := len(updates.UpdatesStack) - 1; idx >= 0; idx-- {
if obj, ok := updates.UpdatesStack[idx][oref]; ok {
return &obj
}
}
return nil
}
func ContextAddUpdate(ctx context.Context, update WaveObjUpdate) {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return
}
updates := updatesVal.(*contextUpdatesType)
oref := waveobj.ORef{
OType: update.OType,
OID: update.OID,
}
updates.UpdatesStack[len(updates.UpdatesStack)-1][oref] = update
}
func ContextUpdatesBeginTx(ctx context.Context) context.Context {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return ctx
}
updates := updatesVal.(*contextUpdatesType)
updates.UpdatesStack = append(updates.UpdatesStack, make(map[waveobj.ORef]WaveObjUpdate))
return ctx
}
func ContextUpdatesCommitTx(ctx context.Context) {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return
}
updates := updatesVal.(*contextUpdatesType)
if len(updates.UpdatesStack) <= 1 {
panic(fmt.Errorf("no updates transaction to commit"))
}
// merge the last two updates
curUpdateMap := updates.UpdatesStack[len(updates.UpdatesStack)-1]
prevUpdateMap := updates.UpdatesStack[len(updates.UpdatesStack)-2]
for k, v := range curUpdateMap {
prevUpdateMap[k] = v
}
updates.UpdatesStack = updates.UpdatesStack[:len(updates.UpdatesStack)-1]
}
func ContextUpdatesRollbackTx(ctx context.Context) {
updatesVal := ctx.Value(waveObjUpdateKey)
if updatesVal == nil {
return
}
updates := updatesVal.(*contextUpdatesType)
if len(updates.UpdatesStack) <= 1 {
panic(fmt.Errorf("no updates transaction to rollback"))
}
updates.UpdatesStack = updates.UpdatesStack[:len(updates.UpdatesStack)-1]
}
func CreateTab(ctx context.Context, workspaceId string, name string) (*Tab, error) {
return WithTxRtn(ctx, func(tx *TxWrap) (*Tab, error) {
ws, _ := DBGet[*Workspace](tx.Context(), workspaceId)
if ws == nil {
return nil, fmt.Errorf("workspace not found: %q", workspaceId)
}
layoutNodeId := uuid.NewString()
tab := &Tab{
OID: uuid.NewString(),
Name: name,
BlockIds: []string{},
LayoutNode: layoutNodeId,
}
layoutNode := &LayoutNode{
OID: layoutNodeId,
}
ws.TabIds = append(ws.TabIds, tab.OID)
DBInsert(tx.Context(), tab)
DBInsert(tx.Context(), layoutNode)
DBUpdate(tx.Context(), ws)
return tab, nil
})
}
func CreateWorkspace(ctx context.Context) (*Workspace, error) {
ws := &Workspace{
OID: uuid.NewString(),
TabIds: []string{},
}
DBInsert(ctx, ws)
return ws, nil
}
func UpdateWorkspaceTabIds(ctx context.Context, workspaceId string, tabIds []string) error {
return WithTx(ctx, func(tx *TxWrap) error {
ws, _ := DBGet[*Workspace](tx.Context(), workspaceId)
if ws == nil {
return fmt.Errorf("workspace not found: %q", workspaceId)
}
ws.TabIds = tabIds
DBUpdate(tx.Context(), ws)
return nil
})
}
func SetActiveTab(ctx context.Context, windowId string, tabId string) error {
return WithTx(ctx, func(tx *TxWrap) error {
window, _ := DBGet[*Window](tx.Context(), windowId)
if window == nil {
return fmt.Errorf("window not found: %q", windowId)
}
if tabId != "" {
tab, _ := DBGet[*Tab](tx.Context(), tabId)
if tab == nil {
return fmt.Errorf("tab not found: %q", tabId)
}
}
window.ActiveTabId = tabId
DBUpdate(tx.Context(), window)
return nil
})
}
func CreateBlock(ctx context.Context, tabId string, blockDef *BlockDef, rtOpts *RuntimeOpts) (*Block, error) {
return WithTxRtn(ctx, func(tx *TxWrap) (*Block, error) {
tab, _ := DBGet[*Tab](tx.Context(), tabId)
if tab == nil {
return nil, fmt.Errorf("tab not found: %q", tabId)
}
blockId := uuid.NewString()
blockData := &Block{
OID: blockId,
BlockDef: blockDef,
Controller: blockDef.Controller,
View: blockDef.View,
RuntimeOpts: rtOpts,
Meta: blockDef.Meta,
}
DBInsert(tx.Context(), blockData)
tab.BlockIds = append(tab.BlockIds, blockId)
DBUpdate(tx.Context(), tab)
return blockData, nil
})
}
func findStringInSlice(slice []string, val string) int {
for idx, v := range slice {
if v == val {
return idx
}
}
return -1
}
func DeleteBlock(ctx context.Context, tabId string, blockId string) error {
return WithTx(ctx, func(tx *TxWrap) error {
tab, _ := DBGet[*Tab](tx.Context(), tabId)
if tab == nil {
return fmt.Errorf("tab not found: %q", tabId)
}
blockIdx := findStringInSlice(tab.BlockIds, blockId)
if blockIdx == -1 {
return nil
}
tab.BlockIds = append(tab.BlockIds[:blockIdx], tab.BlockIds[blockIdx+1:]...)
DBUpdate(tx.Context(), tab)
DBDelete(tx.Context(), OType_Block, blockId)
return nil
})
}
func DeleteTab(ctx context.Context, workspaceId string, tabId string) error {
return WithTx(ctx, func(tx *TxWrap) error {
ws, _ := DBGet[*Workspace](tx.Context(), workspaceId)
if ws == nil {
return fmt.Errorf("workspace not found: %q", workspaceId)
}
tab, _ := DBGet[*Tab](tx.Context(), tabId)
if tab == nil {
return fmt.Errorf("tab not found: %q", tabId)
}
tabIdx := findStringInSlice(ws.TabIds, tabId)
if tabIdx == -1 {
return nil
}
ws.TabIds = append(ws.TabIds[:tabIdx], ws.TabIds[tabIdx+1:]...)
DBUpdate(tx.Context(), ws)
DBDelete(tx.Context(), OType_Tab, tabId)
DBDelete(tx.Context(), OType_LayoutNode, tab.LayoutNode)
for _, blockId := range tab.BlockIds {
DBDelete(tx.Context(), OType_Block, blockId)
}
return nil
})
}
func UpdateMeta(ctx context.Context, oref waveobj.ORef, meta map[string]any) error {
return WithTx(ctx, func(tx *TxWrap) error {
obj, _ := DBGetORef(tx.Context(), oref)
if obj == nil {
return fmt.Errorf("object not found: %q", oref)
}
// obj.SetMeta(meta)
DBUpdate(tx.Context(), obj)
return nil
})
}
func UpdateObjectMeta(ctx context.Context, oref waveobj.ORef, meta map[string]any) error {
return WithTx(ctx, func(tx *TxWrap) error {
obj, _ := DBGetORef(tx.Context(), oref)
if obj == nil {
return fmt.Errorf("object not found: %q", oref)
}
objMeta := waveobj.GetMeta(obj)
if objMeta == nil {
objMeta = make(map[string]any)
}
for k, v := range meta {
if v == nil {
delete(objMeta, k)
continue
}
objMeta[k] = v
}
waveobj.SetMeta(obj, objMeta)
DBUpdate(tx.Context(), obj)
return nil
})
}
func CreateWindow(ctx context.Context) (*Window, error) {
windowId := uuid.NewString()
workspaceId := uuid.NewString()
tabId := uuid.NewString()
layoutNodeId := uuid.NewString()
window := &Window{
OID: windowId,
WorkspaceId: workspaceId,
ActiveTabId: tabId,
ActiveBlockMap: make(map[string]string),
Pos: Point{
X: 100,
Y: 100,
},
WinSize: WinSize{
Width: 800,
Height: 600,
},
}
err := DBInsert(ctx, window)
if err != nil {
return nil, fmt.Errorf("error inserting window: %w", err)
}
ws := &Workspace{
OID: workspaceId,
Name: "w" + workspaceId[0:8],
TabIds: []string{tabId},
}
err = DBInsert(ctx, ws)
if err != nil {
return nil, fmt.Errorf("error inserting workspace: %w", err)
}
tab := &Tab{
OID: tabId,
Name: "T1",
BlockIds: []string{},
LayoutNode: layoutNodeId,
}
err = DBInsert(ctx, tab)
if err != nil {
return nil, fmt.Errorf("error inserting tab: %w", err)
}
layoutNode := &LayoutNode{
OID: layoutNodeId,
}
err = DBInsert(ctx, layoutNode)
if err != nil {
return nil, fmt.Errorf("error inserting layout node: %w", err)
}
client, err := DBGetSingleton[*Client](ctx)
if err != nil {
return nil, fmt.Errorf("error getting client: %w", err)
}
client.WindowIds = append(client.WindowIds, windowId)
err = DBUpdate(ctx, client)
if err != nil {
return nil, fmt.Errorf("error updating client: %w", err)
}
return DBMustGet[*Window](ctx, windowId)
}
func CreateClient(ctx context.Context) (*Client, error) {
client := &Client{
OID: uuid.NewString(),
WindowIds: []string{},
}
err := DBInsert(ctx, client)
if err != nil {
return nil, fmt.Errorf("error inserting client: %w", err)
}
return client, nil
}
func EnsureInitialData() error {
// does not need to run in a transaction since it is called on startup
ctx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
defer cancelFn()
client, err := DBGetSingleton[*Client](ctx)
if err == ErrNotFound {
client, err = CreateClient(ctx)
if err != nil {
return fmt.Errorf("error creating client: %w", err)
}
}
if client.MainWindowId != "" {
// convert to windowIds
client.WindowIds = []string{client.MainWindowId}
client.MainWindowId = ""
err = DBUpdate(ctx, client)
if err != nil {
return fmt.Errorf("error updating client: %w", err)
}
client, err = DBGetSingleton[*Client](ctx)
if err != nil {
return fmt.Errorf("error getting client (after main window update): %w", err)
}
}
if len(client.WindowIds) > 0 {
return nil
}
_, err = CreateWindow(ctx)
if err != nil {
return fmt.Errorf("error creating window: %w", err)
}
return nil
}