package widgets
import (
"fmt"
"log"
"math"
"regexp"
"sort"
"github.com/gdamore/tcell/v2"
"github.com/mattn/go-runewidth"
"git.sr.ht/~rjarry/aerc/config"
"git.sr.ht/~rjarry/aerc/lib"
libsort "git.sr.ht/~rjarry/aerc/lib/sort"
"git.sr.ht/~rjarry/aerc/lib/ui"
"git.sr.ht/~rjarry/aerc/models"
"git.sr.ht/~rjarry/aerc/worker/types"
)
type DirectoryList struct {
ui.Invalidatable
aercConf *config.AercConfig
acctConf *config.AccountConfig
store *lib.DirStore
dirs []string
logger *log.Logger
selecting string
selected string
scroll int
spinner *Spinner
worker *types.Worker
}
func NewDirectoryList(conf *config.AercConfig, acctConf *config.AccountConfig,
logger *log.Logger, worker *types.Worker) *DirectoryList {
dirlist := &DirectoryList{
aercConf: conf,
acctConf: acctConf,
logger: logger,
store: lib.NewDirStore(),
worker: worker,
}
uiConf := dirlist.UiConfig()
dirlist.spinner = NewSpinner(&uiConf)
dirlist.spinner.OnInvalidate(func(_ ui.Drawable) {
dirlist.Invalidate()
})
dirlist.spinner.Start()
return dirlist
}
func (dirlist *DirectoryList) UiConfig() config.UIConfig {
return dirlist.aercConf.GetUiConfig(map[config.ContextType]string{
config.UI_CONTEXT_ACCOUNT: dirlist.acctConf.Name,
config.UI_CONTEXT_FOLDER: dirlist.Selected(),
})
}
func (dirlist *DirectoryList) List() []string {
return dirlist.store.List()
}
func (dirlist *DirectoryList) UpdateList(done func(dirs []string)) {
// TODO: move this logic into dirstore
var dirs []string
dirlist.worker.PostAction(
&types.ListDirectories{}, func(msg types.WorkerMessage) {
switch msg := msg.(type) {
case *types.Directory:
dirs = append(dirs, msg.Dir.Name)
case *types.Done:
dirlist.store.Update(dirs)
dirlist.filterDirsByFoldersConfig()
dirlist.sortDirsByFoldersSortConfig()
dirlist.store.Update(dirlist.dirs)
dirlist.spinner.Stop()
dirlist.Invalidate()
if done != nil {
done(dirs)
}
}
})
}
func (dirlist *DirectoryList) Select(name string) {
dirlist.selecting = name
dirlist.worker.PostAction(&types.OpenDirectory{Directory: name},
func(msg types.WorkerMessage) {
switch msg.(type) {
case *types.Error:
dirlist.selecting = ""
case *types.Done:
dirlist.selected = dirlist.selecting
dirlist.filterDirsByFoldersConfig()
hasSelected := false
for _, d := range dirlist.dirs {
if d == dirlist.selected {
hasSelected = true
break
}
}
if !hasSelected && dirlist.selected != "" {
dirlist.dirs = append(dirlist.dirs, dirlist.selected)
}
sort.Strings(dirlist.dirs)
dirlist.sortDirsByFoldersSortConfig()
}
dirlist.Invalidate()
})
dirlist.Invalidate()
}
func (dirlist *DirectoryList) Selected() string {
return dirlist.selected
}
func (dirlist *DirectoryList) Invalidate() {
dirlist.DoInvalidate(dirlist)
}
func (dirlist *DirectoryList) getDirString(name string, width int, recentUnseen func() string) string {
percent := false
rightJustify := false
formatted := ""
doRightJustify := func(s string) {
formatted = runewidth.FillRight(formatted, width-len(s))
formatted = runewidth.Truncate(formatted, width-len(s), "…")
}
for _, char := range dirlist.UiConfig().DirListFormat {
switch char {
case '%':
if percent {
formatted += string(char)
percent = false
} else {
percent = true
}
case '>':
if percent {
rightJustify = true
}
case 'n':
if percent {
if rightJustify {
doRightJustify(name)
rightJustify = false
}
formatted += name
percent = false
}
case 'r':
if percent {
rString := recentUnseen()
if rightJustify {
doRightJustify(rString)
rightJustify = false
}
formatted += rString
percent = false
}
default:
formatted += string(char)
}
}
return formatted
}
func (dirlist *DirectoryList) getRUEString(name string) string {
msgStore, ok := dirlist.MsgStore(name)
if !ok {
return ""
}
var totalRecent, totalUnseen, totalExists int
if msgStore.DirInfo.AccurateCounts {
totalRecent = msgStore.DirInfo.Recent
totalUnseen = msgStore.DirInfo.Unseen
totalExists = msgStore.DirInfo.Exists
} else {
totalRecent, totalUnseen = countRUE(msgStore)
// use the total count from the dirinfo, else we only count already
// fetched messages
totalExists = msgStore.DirInfo.Exists
}
rueString := ""
if totalRecent > 0 {
rueString = fmt.Sprintf("%d/%d/%d", totalRecent, totalUnseen, totalExists)
} else if totalUnseen > 0 {
rueString = fmt.Sprintf("%d/%d", totalUnseen, totalExists)
} else if totalExists > 0 {
rueString = fmt.Sprintf("%d", totalExists)
}
return rueString
}
func (dirlist *DirectoryList) Draw(ctx *ui.Context) {
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ',
dirlist.UiConfig().GetStyle(config.STYLE_DIRLIST_DEFAULT))
if dirlist.spinner.IsRunning() {
dirlist.spinner.Draw(ctx)
return
}
if len(dirlist.dirs) == 0 {
style := dirlist.UiConfig().GetStyle(config.STYLE_DIRLIST_DEFAULT)
ctx.Printf(0, 0, style, dirlist.UiConfig().EmptyDirlist)
return
}
dirlist.ensureScroll(ctx.Height())
needScrollbar := true
percentVisible := float64(ctx.Height()) / float64(len(dirlist.dirs))
if percentVisible >= 1.0 {
needScrollbar = false
}
textWidth := ctx.Width()
if needScrollbar {
textWidth -= 1
}
if textWidth < 0 {
textWidth = 0
}
for i, name := range dirlist.dirs {
if i < dirlist.scroll {
continue
}
row := i - dirlist.scroll
if row >= ctx.Height() {
break
}
style := dirlist.UiConfig().GetStyle(config.STYLE_DIRLIST_DEFAULT)
if name == dirlist.selected {
style = dirlist.UiConfig().GetStyleSelected(config.STYLE_DIRLIST_DEFAULT)
}
ctx.Fill(0, row, textWidth, 1, ' ', style)
dirString := dirlist.getDirString(name, textWidth, func() string {
return dirlist.getRUEString(name)
})
ctx.Printf(0, row, style, dirString)
}
if needScrollbar {
scrollBarCtx := ctx.Subcontext(ctx.Width()-1, 0, 1, ctx.Height())
dirlist.drawScrollbar(scrollBarCtx, percentVisible)
}
}
func (dirlist *DirectoryList) drawScrollbar(ctx *ui.Context, percentVisible float64) {
gutterStyle := tcell.StyleDefault
pillStyle := tcell.StyleDefault.Reverse(true)
// gutter
ctx.Fill(0, 0, 1, ctx.Height(), ' ', gutterStyle)
// pill
pillSize := int(math.Ceil(float64(ctx.Height()) * percentVisible))
percentScrolled := float64(dirlist.scroll) / float64(len(dirlist.dirs))
pillOffset := int(math.Floor(float64(ctx.Height()) * percentScrolled))
ctx.Fill(0, pillOffset, 1, pillSize, ' ', pillStyle)
}
func (dirlist *DirectoryList) ensureScroll(h int) {
selectingIdx := findString(dirlist.dirs, dirlist.selecting)
if selectingIdx < 0 {
// dir not found, meaning we are currently adding / removing a dir.
// we can simply ignore this until we get redrawn with the new
// dirlist.dir content
return
}
maxScroll := len(dirlist.dirs) - h
if maxScroll < 0 {
maxScroll = 0
}
if selectingIdx >= dirlist.scroll && selectingIdx < dirlist.scroll+h {
if dirlist.scroll > maxScroll {
dirlist.scroll = maxScroll
}
return
}
if selectingIdx >= dirlist.scroll+h {
dirlist.scroll = selectingIdx - h + 1
} else if selectingIdx < dirlist.scroll {
dirlist.scroll = selectingIdx
}
if dirlist.scroll > maxScroll {
dirlist.scroll = maxScroll
}
}
func (dirlist *DirectoryList) MouseEvent(localX int, localY int, event tcell.Event) {
switch event := event.(type) {
case *tcell.EventMouse:
switch event.Buttons() {
case tcell.Button1:
clickedDir, ok := dirlist.Clicked(localX, localY)
if ok {
dirlist.Select(clickedDir)
}
case tcell.WheelDown:
dirlist.Next()
case tcell.WheelUp:
dirlist.Prev()
}
}
}
func (dirlist *DirectoryList) Clicked(x int, y int) (string, bool) {
if dirlist.dirs == nil || len(dirlist.dirs) == 0 {
return "", false
}
for i, name := range dirlist.dirs {
if i == y {
return name, true
}
}
return "", false
}
func (dirlist *DirectoryList) NextPrev(delta int) {
curIdx := findString(dirlist.dirs, dirlist.selected)
if curIdx == len(dirlist.dirs) {
return
}
newIdx := curIdx + delta
ndirs := len(dirlist.dirs)
if ndirs == 0 {
return
}
if newIdx < 0 {
newIdx = ndirs - 1
} else if newIdx >= ndirs {
newIdx = 0
}
dirlist.Select(dirlist.dirs[newIdx])
}
func (dirlist *DirectoryList) Next() {
dirlist.NextPrev(1)
}
func (dirlist *DirectoryList) Prev() {
dirlist.NextPrev(-1)
}
func folderMatches(folder string, pattern string) bool {
if len(pattern) == 0 {
return false
}
if pattern[0] == '~' {
r, err := regexp.Compile(pattern[1:])
if err != nil {
return false
}
return r.Match([]byte(folder))
}
return pattern == folder
}
// sortDirsByFoldersSortConfig sets dirlist.dirs to be sorted based on the
// AccountConfig.FoldersSort option. Folders not included in the option
// will be appended at the end in alphabetical order
func (dirlist *DirectoryList) sortDirsByFoldersSortConfig() {
sort.Slice(dirlist.dirs, func(i, j int) bool {
foldersSort := dirlist.acctConf.FoldersSort
iInFoldersSort := findString(foldersSort, dirlist.dirs[i])
jInFoldersSort := findString(foldersSort, dirlist.dirs[j])
if iInFoldersSort >= 0 && jInFoldersSort >= 0 {
return iInFoldersSort < jInFoldersSort
}
if iInFoldersSort >= 0 {
return true
}
if jInFoldersSort >= 0 {
return false
}
return dirlist.dirs[i] < dirlist.dirs[j]
})
}
// filterDirsByFoldersConfig sets dirlist.dirs to the filtered subset of the
// dirstore, based on AccountConfig.Folders (inclusion) and
// AccountConfig.FoldersExclude (exclusion), in that order.
func (dirlist *DirectoryList) filterDirsByFoldersConfig() {
filterDirs := func(orig, filters []string, exclude bool) []string {
if len(filters) == 0 {
return orig
}
var dest []string
for _, folder := range orig {
// When excluding, include things by default, and vice-versa
include := exclude
for _, f := range filters {
if folderMatches(folder, f) {
// If matched an exclusion, don't include
// If matched an inclusion, do include
include = !exclude
break
}
}
if include {
dest = append(dest, folder)
}
}
return dest
}
dirlist.dirs = dirlist.store.List()
// 'folders' (if available) is used to make the initial list and
// 'folders-exclude' removes from that list.
configFolders := dirlist.acctConf.Folders
dirlist.dirs = filterDirs(dirlist.dirs, configFolders, false)
configFoldersExclude := dirlist.acctConf.FoldersExclude
dirlist.dirs = filterDirs(dirlist.dirs, configFoldersExclude, true)
}
func (dirlist *DirectoryList) SelectedMsgStore() (*lib.MessageStore, bool) {
return dirlist.store.MessageStore(dirlist.selected)
}
func (dirlist *DirectoryList) MsgStore(name string) (*lib.MessageStore, bool) {
return dirlist.store.MessageStore(name)
}
func (dirlist *DirectoryList) SetMsgStore(name string, msgStore *lib.MessageStore) {
dirlist.store.SetMessageStore(name, msgStore)
msgStore.OnUpdateDirs(func() {
dirlist.Invalidate()
})
}
func findString(slice []string, str string) int {
for i, s := range slice {
if str == s {
return i
}
}
return -1
}
func (dirlist *DirectoryList) getSortCriteria() []*types.SortCriterion {
if len(dirlist.UiConfig().Sort) == 0 {
return nil
}
criteria, err := libsort.GetSortCriteria(dirlist.UiConfig().Sort)
if err != nil {
dirlist.logger.Printf("getSortCriteria failed: %v", err)
return nil
}
return criteria
}
func countRUE(msgStore *lib.MessageStore) (recent, unread int) {
for _, msg := range msgStore.Messages {
if msg == nil {
continue
}
seen := false
isrecent := false
for _, flag := range msg.Flags {
if flag == models.SeenFlag {
seen = true
} else if flag == models.RecentFlag {
isrecent = true
}
}
if !seen {
if isrecent {
recent++
} else {
unread++
}
}
}
return recent, unread
}