Add tasks.py and include invoke/livereload in the conda env to suppor…

…t the invoke commands.

env.yml

@@ -4,5 +4,7 @@ channels:
 dependencies:
   - beautifulsoup4
   - boto
+  - invoke
+  - livereload
   - pelican
   - pyyaml

tasks.py

@@ -0,0 +1,147 @@
+import os
+import shlex
+import shutil
+import sys
+import datetime
+
+from invoke import task
+from invoke.main import program
+from invoke.util import cd
+from pelican import main as pelican_main
+from pelican.server import ComplexHTTPRequestHandler, RootedHTTPServer
+from pelican.settings import DEFAULT_CONFIG, get_settings_from_file
+
+OPEN_BROWSER_ON_SERVE = True
+SETTINGS_FILE_BASE = "pelicanconf.py"
+SETTINGS = {}
+SETTINGS.update(DEFAULT_CONFIG)
+LOCAL_SETTINGS = get_settings_from_file(SETTINGS_FILE_BASE)
+SETTINGS.update(LOCAL_SETTINGS)
+
+CONFIG = {
+    "settings_base": SETTINGS_FILE_BASE,
+    "settings_publish": "publishconf.py",
+    # Output path. Can be absolute or relative to tasks.py. Default: 'output'
+    "deploy_path": SETTINGS["OUTPUT_PATH"],
+    # Host and port for `serve`
+    "host": "localhost",
+    "port": 8000,
+}
+
+
+@task
+def clean(c):
+    """Remove generated files"""
+    if os.path.isdir(CONFIG["deploy_path"]):
+        shutil.rmtree(CONFIG["deploy_path"])
+        os.makedirs(CONFIG["deploy_path"])
+
+
+@task
+def build(c):
+    """Build local version of site"""
+    pelican_run("-s {settings_base}".format(**CONFIG))
+
+
+@task
+def rebuild(c):
+    """`build` with the delete switch"""
+    pelican_run("-d -s {settings_base}".format(**CONFIG))
+
+
+@task
+def regenerate(c):
+    """Automatically regenerate site upon file modification"""
+    pelican_run("-r -s {settings_base}".format(**CONFIG))
+
+
+@task
+def serve(c):
+    """Serve site at http://$HOST:$PORT/ (default is localhost:8000)"""
+
+    class AddressReuseTCPServer(RootedHTTPServer):
+        allow_reuse_address = True
+
+    server = AddressReuseTCPServer(
+        CONFIG["deploy_path"],
+        (CONFIG["host"], CONFIG["port"]),
+        ComplexHTTPRequestHandler,
+    )
+
+    if OPEN_BROWSER_ON_SERVE:
+        # Open site in default browser
+        import webbrowser
+
+        webbrowser.open("http://{host}:{port}".format(**CONFIG))
+
+    sys.stderr.write("Serving at {host}:{port} ...\n".format(**CONFIG))
+    server.serve_forever()
+
+
+@task
+def reserve(c):
+    """`build`, then `serve`"""
+    build(c)
+    serve(c)
+
+
+@task
+def preview(c):
+    """Build production version of site"""
+    pelican_run("-s {settings_publish}".format(**CONFIG))
+
+@task
+def livereload(c):
+    """Automatically reload browser tab upon file modification."""
+    from livereload import Server
+
+    def cached_build():
+        cmd = "-s {settings_base} -e CACHE_CONTENT=true LOAD_CONTENT_CACHE=true"
+        pelican_run(cmd.format(**CONFIG))
+
+    cached_build()
+    server = Server()
+    theme_path = SETTINGS["THEME"]
+    watched_globs = [
+        CONFIG["settings_base"],
+        f"{theme_path}/templates/**/*.html",
+    ]
+
+    content_file_extensions = [".md", ".rst"]
+    for extension in content_file_extensions:
+        content_glob = "{}/**/*{}".format(SETTINGS["PATH"], extension)
+        watched_globs.append(content_glob)
+
+    static_file_extensions = [".css", ".js"]
+    for extension in static_file_extensions:
+        static_file_glob = f"{theme_path}/static/**/*{extension}"
+        watched_globs.append(static_file_glob)
+
+    for glob in watched_globs:
+        server.watch(glob, cached_build)
+
+    if OPEN_BROWSER_ON_SERVE:
+        # Open site in default browser
+        import webbrowser
+
+        webbrowser.open("http://{host}:{port}".format(**CONFIG))
+
+    server.serve(host=CONFIG["host"], port=CONFIG["port"], root=CONFIG["deploy_path"])
+
+
+@task
+def publish(c):
+    """Publish to production via rsync"""
+    pelican_run("-s {settings_publish}".format(**CONFIG))
+    c.run(
+        'rsync --delete --exclude ".DS_Store" -pthrvz -c '
+        '-e "ssh -p {ssh_port}" '
+        "{} {ssh_user}@{ssh_host}:{ssh_path}".format(
+            CONFIG["deploy_path"].rstrip("/") + "/", **CONFIG
+        )
+    )
+
+
+def pelican_run(cmd):
+    cmd += " " + program.core.remainder  # allows to pass-through args to pelican
+    pelican_main(shlex.split(cmd))