#!/usr/bin/python
# -*- coding: UTF-8 -*-

import base64
from cStringIO import StringIO
from uuid import uuid4

from flask import Blueprint
from flask import jsonify, request, send_file, current_app
from PIL import Image

import utils
from utils.decorator import admin_required
from utils.template import my_render_template

import config

from utils.sql import sql_insert_generate

from functions import do_encrypt_dek, do_decrypt_dek

from NIST.fingerprint.labels import FINGER_POSITION_CODE, PALM_POSITION_CODE
segments_position_code = dict( FINGER_POSITION_CODE, **PALM_POSITION_CODE )

afis_view = Blueprint( "afis", __name__, template_folder = "templates" )

@afis_view.route( "/afis/get/list" )
def download_list():
    return my_render_template( 
        "afis/search_list.html"
    )

@afis_view.route( "/admin/afis/list" )
@admin_required
def admin_list():
    sql = """
        SELECT
            cnm_folder.uuid,
            users.username
        FROM cnm_folder
        INNER JOIN submissions ON submissions.uuid = cnm_folder.donor
        INNER JOIN users ON submissions.donor_id = users.id
    """
    folders = config.db.query_fetchall( sql )
    
    sql = """
        SELECT
            submissions.uuid,
            users.username
        FROM submissions
        LEFT JOIN users ON submissions.donor_id = users.id
        LEFT JOIN cnm_folder ON submissions.uuid = cnm_folder.donor
        WHERE cnm_folder.uuid IS NULL
        ORDER BY users.id ASC
    """
    donors = config.db.query_fetchall( sql )
    
    return my_render_template( 
        "afis/admin/list.html",
        folders = folders,
        donors = donors
    )

@afis_view.route( "/admin/afis/new_folder", methods = [ "POST" ] )
@admin_required
def admin_add_new_folder():
    try:
        donor_uuid = request.form.get( "donor_uuid", False )
        
        sql = "SELECT count( * ) AS nb FROM cnm_folder WHERE donor = %s"
        nb = config.db.query_fetchone( sql, ( donor_uuid, ) )[ "nb" ]
        
        if nb == 0:
            sql = sql_insert_generate( "cnm_folder", [ "donor", "uuid" ], "id" )
            config.db.query_fetchone( sql, ( donor_uuid, str( uuid4() ) ) )
            config.db.commit()
        
        return jsonify( {
            "error": False
        } )
    
    except:
        return jsonify( {
            "error": True
        } )

@afis_view.route( "/admin/afis/<folder_id>/delete" )
@admin_required
def admin_delete_folder( folder_id ):
    try:
        sql = "DELETE FROM cnm_annotation WHERE folder = %s"
        config.db.query( sql, ( folder_id, ) )
        
        sql = "DELETE FROM cnm_segments WHERE folder_uuid = %s"
        config.db.query( sql, ( folder_id, ) )
        
        sql = "DELETE FROM cnm_folder WHERE uuid = %s"
        config.db.query( sql, ( folder_id, ) )
        
        config.db.commit()
        
        return jsonify( {
            "error": False
        } )
    except:
        return jsonify( {
            "error": True
        } )


@afis_view.route( "/admin/afis/<folder_id>" )
@admin_required
def admin_folder_show( folder_id ):
    sql = """
        SELECT
            segments_locations.fpc
        FROM segments_locations
        INNER JOIN files ON segments_locations.tenprint_id = files.uuid
        INNER JOIN submissions ON files.folder = submissions.id
        INNER JOIN cnm_folder ON submissions.uuid = cnm_folder.donor
        WHERE cnm_folder.uuid = %s
        ORDER BY fpc ASC
    """
    segment_list = config.db.query_fetchall( sql, ( folder_id, ) )
    
    sql = """
        SELECT *
        FROM cnm_segments
        WHERE folder_uuid = %s
        ORDER BY fpc ASC
    """
    segment_list_in_folder = config.db.query_fetchall( sql, ( folder_id, ) )
    
    sql = """
        SELECT
            files_segments.tenprint,
            files_segments.pc
        FROM cnm_folder
        INNER JOIN submissions ON cnm_folder.donor = submissions.uuid
        INNER JOIN files ON submissions.id = files.folder
        INNER JOIN files_segments ON files.uuid = files_segments.tenprint
        WHERE cnm_folder.uuid = %s
    """
    tpid = config.db.query_fetchall( sql, ( folder_id, ) )

    sql = """
        SELECT username
        FROM users
        INNER JOIN submissions ON users.id = submissions.donor_id
        INNER JOIN cnm_folder ON submissions.uuid = cnm_folder.donor
        WHERE cnm_folder.uuid = %s
    """
    username = config.db.query_fetchone( sql, ( folder_id, ) )[ "username" ]
    
    return my_render_template(
        "afis/admin/folder.html",
        segment_list = segment_list,
        segment_list_in_folder = segment_list_in_folder,
        tpid = tpid,
        username = username,
        folder_id = folder_id,
        segments_position_code = segments_position_code
    )

@afis_view.route( "/admin/afis/<folder_id>/add/segment", methods = [ "POST" ] )
@admin_required
def admin_add_segment_to_cnmfolder( folder_id ):
    try:
        fpc = request.form.get( "fpc" )
        
        sql = "SELECT count( * ) AS nb FROM cnm_segments WHERE folder_uuid = %s AND fpc = %s"
        nb = config.db.query_fetchone( sql, ( folder_id, fpc, ) )[ "nb" ]
        
        if nb == 0:
            sql = sql_insert_generate( "cnm_segments", [ "uuid", "folder_uuid", "fpc" ], "uuid" )
            config.db.query_fetchone( sql, ( str( uuid4() ), folder_id, fpc, ) )
            config.db.commit()
        
        return jsonify( {
            "error": False
        } )
    
    except:
        return jsonify( {
            "error": True
        } )

@afis_view.route( "/admin/afis/<folder_id>/segment/<fpc>" )
@admin_required
def admin_view_segment( folder_id, fpc ):
    sql = """
        SELECT
            files_segments.tenprint,
            files.uuid as file_uuid
        FROM cnm_folder
        INNER JOIN submissions ON cnm_folder.donor = submissions.uuid
        INNER JOIN files ON submissions.id = files.folder
        INNER JOIN files_segments ON files.uuid = files_segments.tenprint
        WHERE cnm_folder.uuid = %s AND files_segments.pc = %s
    """
    tenprints_list = config.db.query_fetchall( sql, ( folder_id, fpc, ) )

    sql = """
        SELECT username
        FROM users
        INNER JOIN submissions ON users.id = submissions.donor_id
        INNER JOIN cnm_folder ON submissions.uuid = cnm_folder.donor
        WHERE cnm_folder.uuid = %s
    """
    username = config.db.query_fetchone( sql, ( folder_id, ) )[ "username" ]
    
    sql = """
        SELECT id, uuid
        FROM cnm_annotation
        WHERE folder = %s AND fpc = %s
    """
    annotations = config.db.query_fetchall( sql, ( folder_id, fpc, ) )
    
    return my_render_template(
        "afis/admin/segment.html",
        folder_id = folder_id,
        fpc = fpc,
        tenprints_list = tenprints_list,
        username = username,
        annotations = annotations,
        segments_position_code = segments_position_code
    )

@afis_view.route( "/admin/afis/<folder_id>/segment/<fpc>/add/illustration", methods = [ "POST" ] )
@admin_required
def admin_add_illustration( folder_id, fpc ):
    try:
        sql = """
            SELECT donor
            FROM cnm_folder
            WHERE uuid = %s
        """
        donor_uuid = config.db.query_fetchone( sql, ( folder_id, ) )[ "donor" ]

        uploaded_file = request.files[ "file" ]

        fp = StringIO()
        uploaded_file.save( fp )
        fp.seek( 0 )

        file_data = fp.getvalue()
        file_data = base64.b64encode( file_data )
        file_data = do_encrypt_dek( file_data, donor_uuid )
        
        sql = sql_insert_generate( "cnm_annotation", [ "uuid", "folder", "fpc", "annotation_data" ], "id" )
        annotation_id = config.db.query_fetchone( sql, ( str( uuid4() ), folder_id, fpc, file_data, ) )
        config.db.commit()

        return jsonify( {
            "error": False
        } )
    
    except:
        return jsonify( {
            "error": True
        } )

@afis_view.route( "/admin/afis/<folder_id>/segment/<fpc>/remove/illustration", methods = [ "POST" ] )
@admin_required
def admin_remove_illustration( folder_id, fpc ):
    try:
        illustration_uuid = request.form.get( "uuid" )
        sql = "DELETE FROM cnm_annotation WHERE folder = %s AND fpc = %s AND uuid = %s"
        config.db.query( sql, ( folder_id, fpc, illustration_uuid, ) )
        config.db.commit()

        return jsonify( {
            "error": False
        } )

    except:
        return jsonify( {
            "error": True
        } )

@afis_view.route( "/admin/afis/<folder_id>/remove/segment", methods = [ "POST" ] )
@admin_required
def admin_remove_segment( folder_id ):
    try:
        fpc = request.form.get( "fpc" )
        sql = "DELETE FROM cnm_segments WHERE folder_uuid = %s AND fpc = %s"
        config.db.query( sql, ( folder_id, fpc, ) )
        
        sql = "DELETE FROM cnm_annotation WHERE folder = %s AND fpc = %s"
        config.db.query( sql, ( folder_id, fpc, ) )
        
        config.db.commit()

        return jsonify( {
            "error": False
        } )

    except:
        return jsonify( {
            "error": True
        } )

@afis_view.route( "/admin/afis/<folder_id>/annotation/<a_uuid>" )
@admin_required
def admin_get_annotation_image( folder_id, a_uuid ):
    sql = "SELECT donor FROM cnm_folder WHERE uuid = %s"
    donor_uuid = config.db.query_fetchone( sql, ( folder_id, ) )[ "donor" ]
    
    sql = """
        SELECT annotation_data
        FROM cnm_annotation
        WHERE uuid = %s
    """
    data = config.db.query_fetchone( sql, ( a_uuid, ) )[ "annotation_data" ]
    
    data = do_decrypt_dek( data, donor_uuid )
    img = base64.b64decode( data )
    
    buff = StringIO()
    buff.write( img )
    buff.seek( 0 )
    
    img = Image.open( buff )
    buff = utils.images.pil2buffer( img, "PNG" )
    
    return send_file( buff, mimetype = "image/png" )