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package senpai
import (
"strings"
"git.sr.ht/~taiite/senpai/ui"
)
func (app *App) completionsChannelMembers(cs []ui.Completion, cursorIdx int, text []rune) []ui.Completion {
var start int
for start = cursorIdx - 1; 0 <= start; start-- {
if text[start] == ' ' {
break
}
}
start++
word := text[start:cursorIdx]
if len(word) == 0 {
return cs
}
wordCf := app.s.Casemap(string(word))
for _, name := range app.s.Names(app.win.CurrentBuffer()) {
if strings.HasPrefix(app.s.Casemap(name.Name.Name), wordCf) {
nickComp := []rune(name.Name.Name)
if start == 0 {
nickComp = append(nickComp, ':')
}
nickComp = append(nickComp, ' ')
c := make([]rune, len(text)+len(nickComp)-len(word))
copy(c[:start], text[:start])
if cursorIdx < len(text) {
copy(c[start+len(nickComp):], text[cursorIdx:])
}
copy(c[start:], nickComp)
cs = append(cs, ui.Completion{
Text: c,
CursorIdx: start + len(nickComp),
})
}
}
return cs
}
func (app *App) completionsChannelTopic(cs []ui.Completion, cursorIdx int, text []rune) []ui.Completion {
if !hasPrefix(text, []rune("/topic ")) {
return cs
}
topic, _, _ := app.s.Topic(app.win.CurrentBuffer())
if cursorIdx == len(text) {
compText := append(text, []rune(topic)...)
cs = append(cs, ui.Completion{
Text: compText,
CursorIdx: len(compText),
})
}
return cs
}
func (app *App) completionsMsg(cs []ui.Completion, cursorIdx int, text []rune) []ui.Completion {
if !hasPrefix(text, []rune("/msg ")) {
return cs
}
// Check if the first word (target) is already written and complete (in
// which case we don't have completions to provide).
var word string
hasMetALetter := false
for i := 5; i < cursorIdx; i += 1 {
if hasMetALetter && text[i] == ' ' {
return cs
}
if !hasMetALetter && text[i] != ' ' {
word = app.s.Casemap(string(text[i:cursorIdx]))
hasMetALetter = true
}
}
if word == "" {
return cs
}
for _, user := range app.s.Users() {
if strings.HasPrefix(app.s.Casemap(user), word) {
nickComp := append([]rune(user), ' ')
c := make([]rune, len(text)+5+len(nickComp)-cursorIdx)
copy(c[:5], []rune("/msg "))
copy(c[5:], nickComp)
if cursorIdx < len(text) {
copy(c[5+len(nickComp):], text[cursorIdx:])
}
cs = append(cs, ui.Completion{
Text: c,
CursorIdx: 5 + len(nickComp),
})
}
}
return cs
}
func hasPrefix(s, prefix []rune) bool {
return len(prefix) <= len(s) && equal(prefix, s[:len(prefix)])
}
func equal(a, b []rune) bool {
if len(a) != len(b) {
return false
}
for i := 0; i < len(a); i++ {
if a[i] != b[i] {
return false
}
}
return true
}
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