paulo@52: import os
paulo@52: import re
paulo@52: import glob
paulo@52: import traceback
paulo@54: import datetime
paulo@54: import random
paulo@54: import urlparse
paulo@52: 
paulo@52: import html
paulo@52: 
paulo@53: import logging
paulo@53: logging.basicConfig(
paulo@53: 	level=logging.DEBUG,
paulo@53: 	filename="_LOG",
paulo@53: 	format="%(asctime)s %(levelname)-8s %(message)s",
paulo@53: )
paulo@52: 
paulo@52: 
paulo@52: 
paulo@54: def _is_pics_dir(dirpath):
paulo@54: 	return os.path.exists(os.path.join(dirpath, "_picsroot"))
paulo@52: 
paulo@52: 
paulo@54: def _get_dir_dt(dirpath):
paulo@54: 	if _is_pics_dir(dirpath):
paulo@54: 		dirpath = os.path.join(dirpath, "_picsroot")
paulo@54: 
paulo@54: 	return datetime.datetime.fromtimestamp(os.stat(dirpath).st_mtime)
paulo@54: 
paulo@54: 
paulo@54: def _format_dt(dt):
paulo@54: 	return dt.strftime("%Y-%m-%d")
paulo@53: 
paulo@53: 
paulo@53: def _parse_path_info(path_info):
paulo@53: 	ppi = path_info.split(os.sep)
paulo@53: 	if len(ppi) > 1 and ppi[-1] == '':
paulo@53: 		del ppi[-1]
paulo@53: 		
paulo@53: 	return ppi
paulo@53: 
paulo@53: 
paulo@53: def _numeric_pad_basename(path, maxdigits=20):
paulo@53: 	return os.path.basename(path).zfill(maxdigits)
paulo@53: 
paulo@53: 
paulo@53: def _get_images(d):
paulo@53: 	thumb_fns = glob.glob(os.path.join(d, "thumbs", "*.jpg"))
paulo@53: 	thumb_fns = sorted(thumb_fns, key=_numeric_pad_basename)
paulo@53: 	logging.debug("thumb_fns = %s" % thumb_fns)
paulo@53: 
paulo@53: 	browse_fns = [os.path.join(d, "browse", os.path.basename(i)) for i in thumb_fns]
paulo@53: 	logging.debug("browse_fns = %s" % browse_fns)
paulo@53: 
paulo@53: 	return zip(thumb_fns, browse_fns)
paulo@53: 	
paulo@52: 
paulo@54: class Main:
paulo@54: 	def _get_pics_url(self, dirpath):
paulo@54: 		script_name = self._environ.get("SCRIPT_NAME", '')
paulo@54: 		return os.path.normpath(os.path.join(os.path.dirname(script_name), dirpath))
paulo@54: 	
paulo@54: 	
paulo@54: 	def _get_app_url(self, dirpath):
paulo@54: 		script_name = self._environ.get("SCRIPT_NAME", '')
paulo@54: 		return os.path.normpath(os.path.join(script_name, dirpath))
paulo@54: 	
paulo@54: 	
paulo@54: 	def _get_standard_html_doc(self, title):
paulo@54: 		root = html.HTML("html")
paulo@54: 	
paulo@54: 		header = root.header
paulo@54: 		header.link(rel="stylesheet", type="text/css", href=self._get_pics_url("index.css"))
paulo@54: 		header.title(title)
paulo@54: 	
paulo@54: 		body = root.body
paulo@54: 		body.h1(title)
paulo@54: 	
paulo@54: 		return (root, header, body)
paulo@54: 	
paulo@54: 	
paulo@56: 	def _go_thumbnail_links_to_browse_imgs_html_body(self, body, t, b, a_args={}, img_args={}):
paulo@54: 		thumb_img_url = self._get_pics_url(t)
paulo@54: 		browse_url = self._get_app_url(b)
paulo@52: 
paulo@56: 		a = body.a(href=browse_url, **a_args)
paulo@56: 		a.img(src=thumb_img_url, **img_args)
paulo@52: 
paulo@54: 		body.text(' ')
paulo@54: 	
paulo@54: 	
paulo@54: 	def __init__(self, environ):
paulo@54: 		self._environ = environ
paulo@54: 		self._page_func = None
paulo@54: 	
paulo@54: 		#logging.debug("environ = %s" % (sorted(self._environ.items(), key=lambda x: x[0]),))
paulo@54: 		logging.debug("environ['PATH_INFO'] = %s" % self._environ["PATH_INFO"])
paulo@54: 		logging.debug("environ['SCRIPT_NAME'] = %s" % self._environ["SCRIPT_NAME"])
paulo@54: 		logging.debug("environ['QUERY_STRING'] = %s" % self._environ["QUERY_STRING"])
paulo@54: 	
paulo@54: 		pi = self._environ["PATH_INFO"]
paulo@54: 		ppi = _parse_path_info(pi)
paulo@54: 		logging.debug("ppi = %s" % ppi)
paulo@54: 	
paulo@54: 		if len(ppi) < 1 or ppi[0] != '':
paulo@54: 			raise AssertionError("Parsed path length must start empty: " + pi)
paulo@54: 	
paulo@54: 		if len(ppi) >= 2 and _is_pics_dir(ppi[1]):
paulo@54: 			if len(ppi) == 2:
paulo@54: 				self._page_func = self.page_thumbs
paulo@54: 			elif len(ppi) >= 4 and ppi[2] == "browse" and os.path.exists(os.path.join(*ppi)):
paulo@54: 				self._page_func = self.page_browse
paulo@54: 		elif len(ppi) == 1:
paulo@54: 			self._page_func = self.page_index
paulo@54: 	
paulo@54: 		if self._page_func is None:
paulo@54: 			raise RuntimeError("Cannot find path: " + pi)
paulo@54: 		
paulo@53: 
paulo@54: 	def page(self):
paulo@54: 		return unicode(self._page_func()).encode("utf-8")
paulo@54: 	
paulo@53: 
paulo@54: 	def page_index(self):
paulo@54: 		n = 5 # number of thumbnails to display
paulo@53: 
paulo@54: 		(html_root, html_header, html_body) = self._get_standard_html_doc("Pictures")
paulo@54: 	
paulo@54: 		pics_dirs = []
paulo@54: 		for i in os.listdir('.'):
paulo@54: 			if _is_pics_dir(i):
paulo@54: 				pics_dirs.append((i, _get_dir_dt(i)))
paulo@54: 	
paulo@54: 		pics_dirs.sort(key=lambda x: x[1], reverse=True)
paulo@54: 	
paulo@54: 		for (d, dt) in pics_dirs:
paulo@54: 			html_body.h2.a(d, href=self._get_app_url(d))
paulo@54: 			html_body.h3(_format_dt(dt))
paulo@54: 	
paulo@54: 			imgs = _get_images(d)
paulo@54: 			imgs_idx = [(i, img) for (i, img) in enumerate(imgs)]
paulo@54: 			
paulo@54: 			sampled_imgs_idx = random.sample(imgs_idx, min(len(imgs_idx), n))
paulo@54: 			sampled_imgs_idx.sort(key=lambda x: x[0])
paulo@54: 			
paulo@54: 			html_p = html_body.p
paulo@54: 			for (i, (t, b)) in sampled_imgs_idx:
paulo@54: 				self._go_thumbnail_links_to_browse_imgs_html_body(html_p, t, b)
paulo@54: 			
paulo@54: 		return html_root
paulo@54: 	
paulo@54: 	
paulo@54: 	def page_thumbs(self):
paulo@54: 		ppi = _parse_path_info(self._environ["PATH_INFO"])
paulo@54: 		d = os.path.join(*ppi)
paulo@54: 		(html_root, html_header, html_body) = self._get_standard_html_doc(d)
paulo@53: 
paulo@54: 		qs = urlparse.parse_qs(self._environ["QUERY_STRING"])
paulo@54: 		from_img = None
paulo@54: 		if "from" in qs:
paulo@54: 			from_img = qs["from"][0]
paulo@54: 	
paulo@54: 		html_p = html_body.p
paulo@54: 		for (t, b) in _get_images(d):
paulo@54: 			if from_img is not None and b == from_img:
paulo@56: 				self._go_thumbnail_links_to_browse_imgs_html_body(html_p, t, b, img_args={"klass":"sel2", "id":"selected"})
paulo@54: 			else:
paulo@54: 				self._go_thumbnail_links_to_browse_imgs_html_body(html_p, t, b)
paulo@54: 	
paulo@54: 		html_body.a("(Other pictures)", href=self._get_app_url(''))
paulo@54: 		return html_root
paulo@54: 	
paulo@54: 	
paulo@54: 	def page_browse(self):
paulo@54: 		ppi = _parse_path_info(self._environ["PATH_INFO"])
paulo@54: 		d = os.path.join(*ppi[:2])
paulo@54: 		imgs = _get_images(d)
paulo@54: 		img = os.path.join(*ppi)
paulo@54: 	
paulo@54: 		# thumbnail preview ribbon
paulo@54: 		w = 7 # must be odd
paulo@54: 		v = w/2
paulo@54: 		imgs_circ = [None] * w
paulo@54: 		x = None
paulo@54: 		n = len(imgs)
paulo@54: 		for (i, (t, b)) in enumerate(imgs):
paulo@54: 			if b == img:
paulo@54: 				x = i + 1
paulo@54: 				imgs_circ[v] = (t, b)
paulo@54: 				for j in range(1, v + 1):
paulo@54: 					if (i + j) < n: imgs_circ[v + j] = imgs[i + j]
paulo@54: 					if (i - j) >= 0: imgs_circ[v - j] = imgs[i - j]
paulo@54: 						
paulo@54: 				break
paulo@54: 	
paulo@54: 		if x is None:
paulo@54: 			raise AssertionError
paulo@54: 	
paulo@54: 		(html_root, html_header, html_body) = self._get_standard_html_doc(u"%s \u2014 %s of %s" % (d, x, len(imgs)))
paulo@56: 
paulo@56: 		html_header.script('', type="text/javascript", src=self._get_pics_url("np_keys.js"))
paulo@54: 	
paulo@54: 		browse_img_url = self._get_pics_url(img)
paulo@54: 		html_body.p.img(src=browse_img_url)
paulo@54: 	
paulo@54: 		logging.debug("imgs_circ = %s" % imgs_circ)
paulo@54: 	
paulo@54: 		html_p = html_body.p
paulo@56: 		for (i, img_c) in enumerate(imgs_circ):
paulo@56: 			if img_c is not None:
paulo@56: 				(t, b) = img_c
paulo@56: 				a_args = {}
paulo@56: 				img_args = {}
paulo@54: 				if b == img:
paulo@56: 					a_args = {"id": "up"}
paulo@56: 					img_args = {"klass": "sel"}
paulo@56: 					b = "%s?from=%s#selected" % (d, img)
paulo@56: 				elif i == v + 1:
paulo@56: 					a_args = {"id": "next"}
paulo@56: 				elif i == v - 1:
paulo@56: 					a_args = {"id": "prev"}
paulo@56: 
paulo@56: 				self._go_thumbnail_links_to_browse_imgs_html_body(html_p, t, b, a_args, img_args)
paulo@54: 	
paulo@54: 		return html_root
paulo@53: 
paulo@52: 
paulo@52: def app(environ, start_response):
paulo@52: 	response_code = "500 Internal Server Error"
paulo@52: 	response_type = "text/plain; charset=UTF-8"
paulo@52: 
paulo@52: 	try:
paulo@54: 		response_body = Main(environ).page()
paulo@52: 		response_code = "200 OK"
paulo@52: 		response_type = "text/html; charset=UTF-8"
paulo@52: 	except:
paulo@52: 		response_body = traceback.format_exc()
paulo@52: 
paulo@52: 	response_headers = [
paulo@52: 		("Content-Type", response_type),
paulo@52: 		("Content-Length", str(len(response_body))),
paulo@52: 	]
paulo@52: 
paulo@52: 	start_response(response_code, response_headers)
paulo@52: 
paulo@52: 	return [response_body]