import os
import unicodedata
from exporter import export

from canvas import *
from project import *

##### CONFIG #####

WINDOW_SIZE = (
    (1280,720),
    (1920,1019)
)[0]

cross_color = (255, 60, 25)
pixel_color = (255,) * 3

##################

project=Project()

def menu_file_open_project_click():
    global project
    global canvas_editor

    file_path = tkinter.filedialog.askopenfilename(
        title="Open font project",
        filetypes=[("Font project (json)", "*.fontproj")]
    )
    if file_path == "" or file_path==():
        return

    # save last path to cache
    with open("last_path_cache.txt", "w") as f:
        f.write(file_path)

    try:
        project.load(file_path)
    except AttributeError as e:
        tkinter.messagebox.showerror("Opening project",f"Project '{file_path}' is invalid: {e}")
    except IOError as e:
        tkinter.messagebox.showerror("Opening project",f"Failed to open project '{file_path}': {e}")
    finally:
        canvas_editor.after_project_load()
        canvas_editor.draw()


def menu_file_save_project_click():
    global project

    path=None
    if project.loaded:
        path=project.path
    else:
        # show file save dialog
        path=filedialog.asksaveasfilename(
            title="Save font project",
            filetypes=[("Font project (json)", "*.fontproj")],
            defaultextension=".fontproj"
        )
        if path=="" or file_path==():
            return

    try:
        project.save(path)
    except IOError as e:
        tkinter.messagebox.showerror("Saving project",f"Failed to save project '{path}': {e}")


def menu_file_save_project_as_click():
    pass

def button_prev_glyph_click():
    canvas_editor.prev_glyph()


def button_next_glyph_click():
    canvas_editor.next_glyph()


def number_only_validate(val):
    return str.isdigit(val) or val==""


window=tkinter.Tk()
window.title("fonteditor")
window.geometry(f"{WINDOW_SIZE[0]}x{WINDOW_SIZE[1]}")

menubar=tkinter.Menu(window)
menu_file=tkinter.Menu(menubar,tearoff=False)
menu_file.add_command(label="Open project",command=menu_file_open_project_click)
menu_file.add_command(label="Save project",command=menu_file_save_project_click)
menu_file.add_command(label="Save project as",command=menu_file_save_project_as_click)
menubar.add_cascade(label="File",menu=menu_file)

canvas_editor=EditorCanvas(project,window,bg="black")
canvas_editor.pack(side="left",fill="both",expand=True)

frame_controls=tkinter.Frame(window)
frame_controls.pack(side="right")

canvas_preview=tkinter.Canvas(frame_controls,width=100,height=200,bg="black")
canvas_preview.pack(side="top")

label_glyph_name=tkinter.Label(frame_controls,text="Placeholder")
label_glyph_name.pack(side="top")

frame_nav=tkinter.Frame(frame_controls)
frame_nav.pack(side="top",pady=10)

button_prev_glyph=tkinter.Button(frame_nav,width=10,text="Previous",command=button_prev_glyph_click)
button_prev_glyph.pack(side="left")

button_next_glyph=tkinter.Button(frame_nav,width=10,text="Next",command=button_next_glyph_click)
button_next_glyph.pack(side="left")

frame_glyph_id=tkinter.Frame(frame_controls)
frame_glyph_id.pack(side="top",pady=10)

entry_glyph_id=tkinter.Entry(frame_glyph_id,validate="all",validatecommand=((window.register(number_only_validate)),"%P"))
entry_glyph_id.pack(side="left")

button_glyph_search=tkinter.Button(frame_glyph_id,width=10,text="Search")
button_glyph_search.pack(side="left")

window.config(menu=menubar)
window.mainloop()