initial commit

.gitignore

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: 2023 Jeff Epler <jepler@gmail.com>
+#
+# SPDX-License-Identifier: MIT
+
+__pycache__
+*.egg-info/
+/build
+/dist

.pre-commit-config.yaml

@@ -0,0 +1,41 @@
+# SPDX-FileCopyrightText: 2020 Diego Elio Pettenò
+#
+# SPDX-License-Identifier: Unlicense
+
+default_language_version:
+  python: python3
+
+repos:
+- repo: https://github.com/psf/black
+  rev: 23.1.0
+  hooks:
+  - id: black
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  -   id: check-yaml
+  -   id: end-of-file-fixer
+      exclude: tests
+  -   id: trailing-whitespace
+      exclude: tests
+-   repo: https://github.com/codespell-project/codespell
+    rev: v2.2.4
+    hooks:
+    -   id: codespell
+        args: [-w]
+- repo: https://github.com/fsfe/reuse-tool
+  rev: v1.1.2
+  hooks:
+  - id: reuse
+- repo: https://github.com/pycqa/isort
+  rev: 5.12.0
+  hooks:
+    - id: isort
+      name: isort (python)
+      args: ['--profile', 'black']
+- repo: https://github.com/pycqa/pylint
+  rev: v2.17.0
+  hooks:
+  - id: pylint
+    additional_dependencies: [chap]
+    args: ['--source-roots', 'src']

LICENSES/MIT.txt

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSES/Unlicense.txt

@@ -0,0 +1,10 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

README.md

@@ -0,0 +1,22 @@
+<!--
+SPDX-FileCopyrightText: 2021 Jeff Epler
+
+SPDX-License-Identifier: MIT
+-->
+
+
+# chap-backend-replay
+
+A proof-of-concept backend plug-in for chap.
+
+## Installation
+
+If you installed chap with pip, then run `pip install chap-backend-replay`.
+
+If you installed chap with pipx, then run `pipx inject chap chap-backend-replay`.
+
+## Use
+
+`chap --backend replay -B session:/full/path/to/existing-chap-session.json tui`
+
+There are additional back-end parameters, use `chap --backend replay --help` to list them.

pyproject.toml

@@ -0,0 +1,40 @@
+# SPDX-FileCopyrightText: 2021 Jeff Epler
+#
+# SPDX-License-Identifier: MIT
+
+[build-system]
+requires = [
+    "setuptools>=61",
+    "setuptools_scm[toml]>=6.0",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[project]
+name="chap-backend-replay"
+authors = [{name = "Jeff Epler", email = "jepler@gmail.com"}]
+description = "Session-replaying backend for chap"
+dynamic = ["readme","version"]
+dependencies = [
+    "chap",
+]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: Implementation :: PyPy",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+]
+[project.urls]
+homepage = "https://github.com/jepler/chap-backend-replay"
+repository = "https://github.com/jepler/chap-backend-replay"
+
+[tool.setuptools_scm]
+[tool.setuptools.dynamic]
+readme = {file = ["README.md"], content-type="text/markdown"}

src/chap/backends/replay.py

@@ -0,0 +1,78 @@
+# SPDX-FileCopyrightText: 2023 Jeff Epler <jepler@gmail.com>
+#
+# SPDX-License-Identifier: MIT
+
+import asyncio
+import functools
+import random
+import os
+from dataclasses import dataclass
+
+import click
+
+from ..session import Assistant, User, Session
+
+
+def ipartition(s, sep=" "):
+    rest = s
+    while rest:
+        first, opt_sep, rest = rest.partition(sep)
+        yield (first, opt_sep)
+
+
+class Replay:
+    @dataclass
+    class Parameters:
+        session: str = None
+        """Complete path to an existing session file"""
+        delay_mu: float = 0.035
+        """Average delay between tokens"""
+        delay_sigma: float = 0.02
+        """Standard deviation of token delay"""
+
+    def __init__(self):
+        self.parameters = self.Parameters()
+
+    @property
+    @functools.cache
+    def _session(self):
+        if self.parameters.session is None:
+            raise click.BadParameter("Must specify -B session:/full/path/to/existing_session.json")
+        session_file = os.path.expanduser(self.parameters.session)
+        with open(session_file, "r", encoding="utf-8") as f:
+            return Session.from_json(f.read())
+
+    @property
+    @functools.cache
+    def _assistant_responses(self):
+        return [message for message in self._session.session if message.role == 'assistant']
+
+    @property
+    def system_message(self):
+        num_assistant_responses = len(self._assistant_responses)
+        return f"Replay of {self.parameters.session} with {num_assistant_responses} responses. The original session system message was:\n\n{self._session.session[0].content}"
+
+    async def aask(self, session, query):
+        data = self.ask(session, query)
+        for word, opt_sep in ipartition(data):
+            yield word + opt_sep
+            await asyncio.sleep(
+                random.gauss(self.parameters.delay_mu, self.parameters.delay_sigma)
+            )
+
+    def ask(
+        self, session, query, *, max_query_size=5, timeout=60
+    ):  # pylint: disable=unused-argument
+        if self._assistant_responses:
+            idx = sum(1 for message in session.session if message.role == 'assistant') % len(self._assistant_responses)
+            
+            new_content = self._assistant_responses[idx].content
+        else:
+            new_content = "(No assistant responses in session)"
+        session.session.extend([User(query), Assistant(new_content)])
+        return new_content
+
+
+def factory():
+    """Replay an existing session file. Useful for testing."""
+    return Replay()