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import inspect
import re
from dataclasses import dataclass
from functools import cached_property
from pathlib import Path
from types import ModuleType
import fasthtml.common as fh
from fasthtml.common import H1, H3, A, Code, Div, Hgroup, P, Pre
from tutorial import utils
@dataclass
class Example:
module: ModuleType
name: str
@cached_property
def title(self):
return self.name.replace("_", " ").title()
@cached_property
def desc(self):
return self.module.DESC
@cached_property
def doc(self):
return self.module.DOC
@cached_property
def height(self):
return getattr(self.module, "HEIGHT", "500px")
@cached_property
def slug(self):
return self.name.replace("_", "-")
@cached_property
def htmx_url(self):
return getattr(self.module, "HTMX_URL", f"https://htmx.org/examples/{self.slug}/")
@cached_property
def start_url(self):
module, slug = self.module, self.slug
url = getattr(module, "START_URL", module.app.routes[1].path)
return f"/{slug}{url}"
def create_routes(self, main_app: fh.FastHTML):
sub_app, slug = self.module.app, self.slug
sub_app.htmlkw = main_app.htmlkw
sub_app.hdrs += (
utils.alpine(),
fh.Script(src="/script.js"),
fh.Script(f"init_sub_page('{slug}')"),
utils.piwik(),
)
main_app.mount(f"/{slug}", sub_app)
main_app.get(f"/{slug}")(self.main_page)
def main_page(self, tab: str = "explain"):
module = self.module
if tab == "code":
code = Path(module.__file__).read_text().split("DESC = ")[0]
code = code.strip().replace("# fmt: on\n", "").replace("# fmt: off\n", "")
content = Pre(Code(code))
else:
doc = _replace_code_blocks(module, self.doc)
content = Div(doc, cls="marked")
return fh.Main(cls="container", x_cloak=True)(
Hgroup(H1(self.title), P(self.desc)),
Div(
*utils.concat(
A("HOME", href="/"),
A("Explain", href=f"/{self.slug}?tab=explain"),
A("Code", href=f"/{self.slug}?tab=code"),
A("Htmx Docs", href=self.htmx_url),
A("Full screen", href=self.start_url),
)
),
Div(cls="grid")(
Div(content, style="max-height:80vh;overflow:scroll"),
Div(
Div(cls="grid")(
fh.Label(fh.Input(type="checkbox", role="switch", x_model="showRequests"), "Show requests"),
),
Div(fh.Iframe(src=self.start_url, height=self.height, width="100%")),
),
Div(**{"x-show": "showRequests"})(
H3("Server Calls"),
Div(Div(id="request-list"), style="height:80vh;overflow:scroll"),
),
),
)
def _replace_code_blocks(module, doc):
"""Replace placeholders by real implementations"""
return re.sub("::([a-zA-Z_0-9\s]+)::", lambda x: _code_block(module, x.group(1).strip().split()), doc)
def _code_block(module, function_names):
code = ""
for o in function_names:
func = getattr(module, o)
if callable(func):
func = getattr(func, "__wrapped__", func)
code += inspect.getsource(func)
else:
code += str(func).strip()
code += "\n"
code = code.strip()
return f"```\n{code.strip()}\n```"
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