import os import re from urllib.parse import urljoin from pathlib import Path from django.conf import settings from django.db import models from django.urls import reverse # from troggle.core.models.troggle import DataIssue # circular import. Hmm class SurvexDirectory(models.Model): """This relates a Cave to the primary SurvexFile which is the 'head' of the survex tree for that cave. Surely this could just be a property of Cave ? No. Several subdirectories all relate to the same Cave """ path = models.CharField(max_length=200) cave = models.ForeignKey("Cave", blank=True, null=True, on_delete=models.SET_NULL) primarysurvexfile = models.ForeignKey( "SurvexFile", related_name="primarysurvexfile", blank=True, null=True, on_delete=models.SET_NULL ) # could also include files in directory but not referenced class Meta: ordering = ("id",) verbose_name_plural = "Survex directories" def __str__(self): return "[SurvexDirectory:" + str(self.path) + " | Primary svx:" + str(self.primarysurvexfile.path) + ".svx ]" class SurvexFile(models.Model): path = models.CharField(max_length=200) survexdirectory = models.ForeignKey("SurvexDirectory", blank=True, null=True, on_delete=models.SET_NULL) cave = models.ForeignKey("Cave", blank=True, null=True, on_delete=models.SET_NULL) class Meta: ordering = ("id",) # Don't change from the default as that breaks troggle webpages and internal referencing! # def __str__(self): # return "[SurvexFile:"+str(self.path) + "-" + str(self.survexdirectory) + "-" + str(self.cave)+"]" def exists(self): fname = Path(settings.SURVEX_DATA, self.path + ".svx") return fname.is_file() def OpenFile(self): fname = os.path.join(settings.SURVEX_DATA, self.path + ".svx") return open(fname) def SetDirectory(self): dirpath = os.path.split(self.path)[0] # pointless search every time we import a survex file if we know there are no duplicates.. # don't use this for initial import. survexdirectorylist = SurvexDirectory.objects.filter(cave=self.cave, path=dirpath) if survexdirectorylist: self.survexdirectory = survexdirectorylist[0] else: survexdirectory = SurvexDirectory(path=dirpath, cave=self.cave, primarysurvexfile=self) survexdirectory.save() self.survexdirectory = survexdirectory self.save() def __str__(self): return self.path class SurvexStationLookUpManager(models.Manager): """what this does, https://docs.djangoproject.com/en/dev/topics/db/managers/ This changes the .objects thinggy to use a case-insensitive match name__iexact so that now SurvexStation.objects.lookup() works as a case-insensitive match """ def lookup(self, name): blocknames, sep, stationname = name.rpartition(".") return self.get(block=SurvexBlock.objects.lookup(blocknames), name__iexact=stationname) class SurvexStation(models.Model): name = models.CharField(max_length=100) block = models.ForeignKey("SurvexBlock", null=True, on_delete=models.SET_NULL) objects = SurvexStationLookUpManager() # overwrites SurvexStation.objects and enables lookup() x = models.FloatField(blank=True, null=True) y = models.FloatField(blank=True, null=True) z = models.FloatField(blank=True, null=True) def path(self): r = self.name b = self.block while True: if b.name: r = b.name + "." + r if b.parent: b = b.parent else: return r class Meta: ordering = ("id",) def __str__(self): return self.name and str(self.name) or "no name" # # Single SurvexBlock # class SurvexBlockLookUpManager(models.Manager): """what this does, https://docs.djangoproject.com/en/dev/topics/db/managers/ This adds a method to the .objects thinggy to use a case-insensitive match name__iexact so that now SurvexBlock.objects.lookup() works as a case-insensitive match. This is used in lookup() in SurvexStationLookUpManager() which is used in Entrance().other_location() which is used in the Cave webpage """ def lookup(self, name): if name == "": blocknames = [] else: blocknames = name.split(".") block = SurvexBlock.objects.get(parent=None, survexfile__path=settings.SURVEX_TOPNAME) for blockname in blocknames: block = SurvexBlock.objects.get(parent=block, name__iexact=blockname) return block class SurvexBlock(models.Model): """One begin..end block within a survex file. The basic element of a survey trip. Multiple anonymous survex blocks are possible within the same surfex file Blocks can span several *included survexfile though. """ objects = SurvexBlockLookUpManager() # overwrites SurvexBlock.objects and enables lookup() name = models.CharField(max_length=100) title = models.CharField(max_length=200) parent = models.ForeignKey("SurvexBlock", blank=True, null=True, on_delete=models.SET_NULL) date = models.DateField(blank=True, null=True) expedition = models.ForeignKey("Expedition", blank=True, null=True, on_delete=models.SET_NULL) # if the survexfile object is deleted, then all teh suvex-blocks in it should be too, # though a block can span more than one file... survexfile = models.ForeignKey("SurvexFile", blank=True, null=True, on_delete=models.CASCADE) survexpath = models.CharField(max_length=200) # the path for the survex stations scanswallet = models.ForeignKey( "Wallet", null=True, on_delete=models.SET_NULL ) # only ONE wallet per block. The most recent seen overwites.. ugh. legsall = models.IntegerField(null=True) # summary data for this block legslength = models.FloatField(null=True) class Meta: ordering = ("id",) # def __str__(self): # return "[SurvexBlock:" + str(self.name) + "-path:" + str(self.survexpath) + "-cave:" + str(self.cave) + "]" def __str__(self): return self.name and str(self.name) or "no_name-#" + str(self.id) def isSurvexBlock(self): # Function used in templates return True def DayIndex(self): """This is used to set different colours for the different trips on the calendar view of the expedition""" mx = 10 index = list(SurvexBlock.objects.filter(date=self.date)).index(self) if index not in range(0, mx): print(f"DayIndex: More than {mx-1} SurvexBlock items on one day '{index}' {self}") index = 0 # return list(self.survexblock_set.all()).index(self) return index class SurvexPersonRole(models.Model): """The CASCADE means that if a SurvexBlock or a Person is deleted, then the SurvexPersonRole is deleted too """ survexblock = models.ForeignKey("SurvexBlock", on_delete=models.CASCADE) # increasing levels of precision, Surely we only need survexblock and person now that we have no link to a logbook entry? personname = models.CharField(max_length=100) person = models.ForeignKey("Person", blank=True, null=True, on_delete=models.CASCADE) # not needed personexpedition = models.ForeignKey("PersonExpedition", blank=True, null=True, on_delete=models.SET_NULL) def __str__(self): return str(self.personname) + " - " + str(self.survexblock) class SingleScan(models.Model): """A single file holding an image. Could be raw notes, an elevation plot or whatever""" ffile = models.CharField(max_length=200) name = models.CharField(max_length=200) wallet = models.ForeignKey("Wallet", null=True, on_delete=models.SET_NULL) class Meta: ordering = ("name",) def get_absolute_url(self): return urljoin( settings.URL_ROOT, reverse("scansingle", kwargs={"path": re.sub("#", "%23", self.wallet.walletname), "file": self.name}), ) def __str__(self): return "Scan Image: " + str(self.name) + " in " + str(self.wallet) class DrawingFile(models.Model): """A file holding a Therion (several types) or a Tunnel drawing Most of the implied capabilities are not implemented yet""" dwgpath = models.CharField(max_length=200) dwgname = models.CharField(max_length=200) dwgwallets = models.ManyToManyField("Wallet") # implicitly links via folders to scans to SVX files scans = models.ManyToManyField("SingleScan") # implicitly links via scans to SVX files dwgcontains = models.ManyToManyField("DrawingFile") # case when its a frame type filesize = models.IntegerField(default=0) npaths = models.IntegerField(default=0) survexfiles = models.ManyToManyField("SurvexFile") # direct link to SVX files - not populated yet class Meta: ordering = ("dwgpath",) def __str__(self): return "Drawing File: " + str(self.dwgname) + " (" + str(self.filesize) + " bytes)"