import { Check, Plus, Sun, Moon } from "lucide-react"

import { Sidebar, SidebarContent, SidebarHeader, SidebarFooter } from "@/components/ui/sidebar"
import { Button } from "@/components/ui/button"
import { ScrollArea } from "@/components/ui/scroll-area"
import { Input } from "@/components/ui/input"

import ListItem from "./ListItem"

import { useNote } from "../contexts/ActiveNoteContext"
import { useNotesStore } from "../contexts/NotesStore"
import { useTheme } from "../contexts/ThemeContext"
import { ChangeEvent, ReactNode, useState } from "react"

function AppSidebar() {
  const { notes, createNote } = useNotesStore()
  const { setCurrentNoteId } = useNote()
  const { theme, toggleTheme } = useTheme()
  const [ filter, setFilter ] = useState("")

  const buildNoteListItems = () => {
    const out: ReactNode[] = []
    notes.forEach((note, key, _) => {
      if (filter && !note.title.toLowerCase().includes(filter.toLowerCase())) return;
      out.push(
        <ListItem
          key={key}
          id={note.id}
          label={note.title}
          onSelect={() => setCurrentNoteId(note.id)}
        />
      )
    })
    return out;
  }

  return (
    <Sidebar>

      <SidebarHeader className="justify-between px-4 py-3 border-b-1 gap-3.5">
        <div className="flex items-center justify-between">
          <span className="font-medium">Notes</span>
          <Button variant="ghost" size="sm" onClick={toggleTheme} className="text-muted-foreground">
            {theme === "dark" ? <Sun /> : <Moon />}
          </Button>
        </div>
        <Input
          placeholder="Search Notes"
          className="shadow-none bg-background"
          onChange={(e) => setFilter(e.target.value)}
        />
      </SidebarHeader>

      <SidebarContent>
        <ScrollArea className="h-full px-2 py-2">
          <div className="space-y-1 py-2">
            {buildNoteListItems()}
          </div>

          <Button
            variant="secondary"
            className="w-full justify-start gap-2 mb-2"
            onClick={createNote}
          >
            <Plus />
            New Note
          </Button>
        </ScrollArea>
      </SidebarContent>

      <SidebarFooter className="p-2 border-t-1">
        <div className="flex items-center gap-3 rounded-md px-2 py-1.5">
          <div className="flex flex-col leading-tight gap-2">
            <span className="text-xs text-muted-foreground">
              {notes.length} note{notes.length !== 1 && "s"}
            </span>
            <div className="flex flex-row gap-2">
              <div className="flex h-4 w-4 items-center justify-center rounded-full bg-foreground">
                <Check className="h-2 w-2 text-background" />
              </div>
              <span className="text-sm font-medium text-foreground">
                Notes synced
              </span>
            </div>
          </div>
        </div>
      </SidebarFooter>

    </Sidebar>
  )
}

export default AppSidebar