# Funktionen zum Dateizugriff mit Suchen, Lesen, Schreiben
# ------------------------------------------------------------
"""

"""
import codecs
import json
import os
import os.path
import re

import yaml

import basic.message
import basic.program
import utils.data_const as D
from pprint import pp
import utils.tdata_tool

def getDump(obj):
    result=""
    print (str(type(obj)))
    result = vars(obj)
    return str(result)
#    if type(obj) == "__dict__"

def getFiles(msg, path, pattern, conn):
    """
    search filenames in the directory - if conn is set search remote
    :param msg:     -- msg-Objekt
    :param path:    -- Pfad - String
    :param pattern: -- Dateiname als Pattern
    :param conn:
    :return: Array mit gefundenen Dateien, nur Dateiname
    """
    if conn is not None:
        return getRemoteFiles(msg, path, pattern, conn)
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    out = []
    msg.debug(verify, "getFiles " + path + " , " + pattern)
    if not os.path.exists(path):
        return out
    for f in os.listdir(path):
        msg.debug(verify, "getFiles " + f)
        if re.search(pattern, f):
            msg.debug(verify, "match " + f)
            out.append(f)
    return out

def getRemoteFiles(msg, path, pattern, conn):
    """
    search filenames in the directory - if conn is set search remote
    :param msg:     -- msg-Objekt
    :param path:    -- Pfad - String
    :param pattern: -- Dateiname als Pattern
    :param conn:
    :return: Array mit gefundenen Dateien, nur Dateiname
    """
    

def getFilesRec(msg, path, pattern):
    """
    Sucht Dateien im Verzeichnis rekursiv
    :param msg:     -- msg-Objekt
    :param path:    -- Pfad - String
    :param pattern: -- Dateiname als Pattern
    :return: Array mit gefundenen Dateien, absoluter Pfad
    """
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    out = []
    msg.debug(verify, "getFilesRec " + path + " , " + pattern)
    for (r, dirs, files) in os.walk(path):
        for f in files:
            msg.debug(verify, "getFilesRec " + f)
            if re.search(pattern, f):
                msg.debug(verify, "match " + f)
                out.append(os.path.join(r, f))
    return out

def getTree(msg, pfad):
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    msg.debug(verify, "getTree " + pfad )
    tree = {}
    files = []
    for f in os.listdir(pfad):
        if os.path.isDir(os.path.join(pfad, f)):
            tree[f] = getTree(msg, os.path.join(pfad, f))
        elif os.path.isFile(os.path.join(pfad, f)):
            files.append(f)
    tree["_files_"] = files
    return tree

def mkPaths(path, msg):
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    modus = job.conf.confs["paths"]["mode"]
    dirname = os.path.dirname(path)
    if os.path.exists(dirname):
        return
    os.makedirs(dirname, exist_ok=True)

def getFileEncoding(msg, path):
    print("--- getFileEncoding "+path)
    encodings = ['utf-8', 'iso-8859-1']  # add more
    for e in encodings:
        print(e)
        try:
            fh = codecs.open(path, 'r', encoding=e)
            fh.readlines()
            fh.seek(0)
        except UnicodeDecodeError:
            print('got unicode error with %s , trying different encoding' % e)
        except:
            print("except")
        else:
            print('opening the file with encoding:  %s ' % e)
            return e
    return detectFileEncode(path, msg)

def detectFileEncode(path, msg):  # return ""
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    print(path)
    cntIso = 0
    cntUtf = 0
    with open(path, 'rb') as file:
        while (byte := file.read(1)):
            i = int.from_bytes(byte, "little")
            #byte = file.read(1)
            if ((i == 196) or (i == 228) or (i == 214) or (i == 246) or (i == 220) or (i == 252) or (i == 191)):
                cntIso += 1
            if (i == 160):
                pass
            elif (i > 127):
                cntUtf += 1
    if (cntIso > cntUtf):
        return 'iso-8859-1'
    return 'utf-8'

def readFileLines(path, msg):
    lines = readFileText(path, msg)
    if isinstance(lines, (str)):
        return lines.splitlines()
    return []

def readFileText(path, msg):
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    if not os.path.exists(path):
        return ""
    enc = detectFileEncode(path, msg)
    with open(path, 'r', encoding=enc) as file:
        text = file.read()
    file.close()
    return text

def readFileDict(path, msg):
    """
    reads and gets general a dict from any kind of filetyp
    :param path: with extension of filetype
    :param msg: optionally
    :return:
    """
    # 20220329 generalize
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    doc = {}
    if not os.path.exists(path):
        return doc
    enc = detectFileEncode(path, msg)
    if D.DFILE_TYPE_YML in path[-4:]:
        with open(path, 'r', encoding=enc) as file:
            doc = yaml.full_load(file)
        file.close()
    elif D.DFILE_TYPE_JSON in path[-5:]:
        with open(path, 'r', encoding=enc) as file:
            doc = json.load(file)
        file.close()
    elif D.DFILE_TYPE_CSV in path[-5:]:
        doc = utils.tdata_tool.getCsvSpec(msg, path, "conf")
    return doc

def writeFileText(msg, path, text, enc="utf-8"):
    job = basic.program.Job.getInstance()
    verify = int(job.getDebugLevel("file_tool"))
    mkPaths(path, msg)
    with open(path, 'w', encoding=enc) as file:
        file.write(text)
    file.close()

def writeFileDict(msg, path, dict, enc="utf-8"):
    job = basic.program.Job.getInstance()
    mkPaths(path, msg)
    if D.DFILE_TYPE_YML in path[-5:]:
        with open(path, 'r', encoding=enc) as file:
            doc = yaml.dump(dict, file)
        file.close()
    elif D.DFILE_TYPE_JSON in path[-5:]:
        with open(path, 'w', encoding=enc) as file:
            doc = json.dumps(file, indent=4)
            file.write(doc)
        file.close()