//APP

import React from "react"
import Sidebar from "./components/Sidebar"
import Editor from "./components/Editor"
import { data } from "./data"
import Split from "react-split"
import { nanoid } from "nanoid"

export default function App() {
    const [notes, setNotes] = React.useState(
        () => JSON.parse(localStorage.getItem("notes")) || []
    )
    const [currentNoteId, setCurrentNoteId] = React.useState(
        (notes[0] && notes[0].id) || ""
    )

    React.useEffect(() => {
        localStorage.setItem("notes", JSON.stringify(notes))
    }, [notes])

    function createNewNote() {
        const newNote = {
            id: nanoid(),
            body: "# Type your markdown note's title here"
        }
        setNotes(prevNotes => [newNote, ...prevNotes])
        setCurrentNoteId(newNote.id)
    }

    function updateNote(text) {
        setNotes(oldNotes => {
            const newArray = []
            for (let i = 0; i < oldNotes.length; i++) {
                const oldNote = oldNotes[i]
                if (oldNote.id === currentNoteId) {
                    // Put the most recently-modified note at the top
                    newArray.unshift({ ...oldNote, body: text })
                } else {
                    newArray.push(oldNote)
                }
            }
            return newArray
        })
    }

    function deleteNote(event, noteId) {
        event.stopPropagation()
        setNotes(oldNotes => oldNotes.filter(note => note.id !== noteId))
    }

    function findCurrentNote() {
        return notes.find(note => {
            return note.id === currentNoteId
        }) || notes[0]
    }

    return (
        <main>
            {
                notes.length > 0
                    ?
                    <Split
                        sizes={[30, 70]}
                        direction="horizontal"
                        className="split"
                    >
                        <Sidebar
                            notes={notes}
                            currentNote={findCurrentNote()}
                            setCurrentNoteId={setCurrentNoteId}
                            newNote={createNewNote}
                            deleteNote={deleteNote}
                        />
                        {
                            currentNoteId &&
                            notes.length > 0 &&
                            <Editor
                                currentNote={findCurrentNote()}
                                updateNote={updateNote}
                            />
                        }
                    </Split>
                    :
                    <div className="no-notes">
                        <h1>You have no notes</h1>
                        <button
                            className="first-note"
                            onClick={createNewNote}
                        >
                            Create one now
                </button>
                    </div>

            }
        </main>
    )
}


//SIDEBAR

import React from "react"

export default function Sidebar(props) {
    const noteElements = props.notes.map((note, index) => (
        <div key={note.id}>
            <div
                
                className={`title ${
                    note.id === props.currentNote.id ? "selected-note" : ""
                }`}
                onClick={() => props.setCurrentNoteId(note.id)}
            >
                <h4 className="text-snippet">{note.body.split("\n")[0]}</h4>
                <button 
                    className="delete-btn"
                    onClick={(event) => props.deleteNote(event, note.id)}
                >
                    <i className="gg-trash trash-icon"></i>
                </button>
            </div>
        </div>
    ))

    return (
        <section className="pane sidebar">
            <div className="sidebar--header">
                <h3>Notes</h3>
                <button className="new-note" onClick={props.newNote}>+</button>
            </div>
            {noteElements}
        </section>
    )
}