# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
# License: MIT. See LICENSE

import datetime
import re

from dateutil.parser import ParserError

import frappe
from frappe.model.meta import get_field_currency, get_field_precision
from frappe.utils import (
	cint,
	cstr,
	flt,
	fmt_money,
	format_datetime,
	format_duration,
	format_time,
	format_timedelta,
	formatdate,
)

BLOCK_TAGS_PATTERN = re.compile(r"(<br|<div|<p)")


def format_value(value, df=None, doc=None, currency=None, translated=False, format=None):
	"""Format value based on given fieldtype, document reference, currency reference.
	If docfield info (df) is not given, it will try and guess based on the datatype of the value"""
	if isinstance(df, str):
		df = frappe._dict(fieldtype=df)

	if not df:
		df = frappe._dict()
		if isinstance(value, datetime.datetime):
			df.fieldtype = "Datetime"
		elif isinstance(value, datetime.date):
			df.fieldtype = "Date"
		elif isinstance(value, datetime.timedelta):
			df.fieldtype = "Time"
		elif isinstance(value, int):
			df.fieldtype = "Int"
		elif isinstance(value, float):
			df.fieldtype = "Float"
		else:
			df.fieldtype = "Data"

	elif isinstance(df, dict):
		# Convert dict to object if necessary
		df = frappe._dict(df)

	if value is None:
		value = ""
	elif translated:
		value = frappe._(value)

	if not df:
		return value

	elif df.get("fieldtype") == "Date":
		return formatdate(value)

	elif df.get("fieldtype") == "Datetime":
		return format_datetime(value)

	elif df.get("fieldtype") == "Time":
		try:
			return format_time(value)
		except ParserError:
			return format_timedelta(value)

	elif (
		value == 0
		and df.get("fieldtype") in ("Int", "Float", "Currency", "Percent")
		and df.get("print_hide_if_no_value")
	):
		# this is required to show 0 as blank in table columns
		return ""

	elif df.get("fieldtype") == "Currency":
		default_currency = frappe.db.get_default("currency")
		currency = currency or get_field_currency(df, doc) or default_currency
		return fmt_money(value, precision=get_field_precision(df, doc), currency=currency, format=format)

	elif df.get("fieldtype") == "Float":
		precision = get_field_precision(df, doc)
		# I don't know why we support currency option for float
		currency = currency or get_field_currency(df, doc)

		# show 1.000000 as 1
		# options should not specified
		if not df.options and value is not None:
			temp = cstr(value).split(".")
			if len(temp) == 1 or cint(temp[1]) == 0:
				precision = 0

		return fmt_money(value, precision=precision, currency=currency)

	elif df.get("fieldtype") == "Percent":
		return f"{flt(value, 2)}%"

	elif df.get("fieldtype") in ("Text", "Small Text"):
		if not BLOCK_TAGS_PATTERN.search(value):
			return frappe.safe_decode(value).replace("\n", "<br>")

	elif df.get("fieldtype") == "Markdown Editor":
		return frappe.utils.markdown(value)

	elif df.get("fieldtype") == "Table MultiSelect":
		values = []
		meta = frappe.get_meta(df.options)
		link_field = next(df for df in meta.fields if df.fieldtype == "Link")
		for v in value:
			v.update({"__link_titles": doc.get("__link_titles")})
			formatted_value = frappe.format_value(v.get(link_field.fieldname, ""), link_field, v)
			values.append(formatted_value)

		return ", ".join(values)

	elif df.get("fieldtype") == "Duration":
		hide_days = df.hide_days
		return format_duration(value, hide_days)

	elif df.get("fieldtype") == "Text Editor":
		return f"<div class='ql-snow'>{value}</div>"

	elif df.get("fieldtype") in ["Link", "Dynamic Link"]:
		if not doc or not doc.get("__link_titles") or not df.options:
			return value

		doctype = df.options
		if df.get("fieldtype") == "Dynamic Link":
			if not df.parent:
				return value

			meta = frappe.get_meta(df.parent)
			_field = meta.get_field(df.options)
			doctype = _field.options

		return doc.__link_titles.get(f"{doctype}::{value}", value)

	elif df.get("fieldtype") == "Select":
		if isinstance(value, str):
			return frappe._(value, context=df.parent or "")

	return value