Chat History Supported! (#58)

* alembic stuff

* docker

* added db models and logic for saving chats

* chat history endpoint connected to frontend

* backend for chat history final

* frontend code for chat history

* bug fixes

* final working!

docker-compose.dev.yaml

@@ -1,5 +1,7 @@
 services:
   backend:
+    depends_on:
+      - postgres
     build:
       context: .
       dockerfile: ./src/backend/Dockerfile
@@ -18,6 +20,14 @@ services:
       - SEARXNG_BASE_URL=${SEARXNG_BASE_URL:-http://host.docker.internal:8080}
       - CUSTOM_MODEL=${CUSTOM_MODEL}
       - REDIS_URL=${REDIS_URL}
+      - DB_ENABLED=${DB_ENABLED:-True}
+      - POSTGRES_HOST=postgres
+    entrypoint: >
+      /bin/sh -c "
+        cd /workspace/src/backend &&
+        alembic upgrade head &&
+        uvicorn main:app --host 0.0.0.0 --port 8000
+      "
     develop:
       watch:
         - action: sync
@@ -58,5 +68,20 @@ services:
     environment:
       - SEARXNG_BASE_URL=https://${SEARXNG_BASE_URL:-localhost}/
 
+  postgres:
+    image: postgres:15.2-alpine
+    restart: always
+    environment:
+      - POSTGRES_USER=${POSTGRES_USER:-postgres}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-password}
+      - POSTGRES_DB=${POSTGRES_DB:-postgres}
+    ports:
+      - "5432:5432"
+    volumes:
+      - db_volume:/var/lib/postgresql/data
+
 networks:
   searxng:
+
+volumes:
+  db_volume:

docker-scripts/env-defaults

@@ -21,3 +21,6 @@ export NEXT_PUBLIC_LOCAL_MODE_ENABLED=${NEXT_PUBLIC_LOCAL_MODE_ENABLED:-true}
 
 # Redis
 export REDIS_URL=${REDIS_URL}
+
+# Database
+export DB_ENABLED=${DB_ENABLED:-True}

pyproject.toml

@@ -28,6 +28,8 @@ slowapi = "^0.1.9"
 redis = "^5.0.4"
 llama-index-llms-ollama = "^0.1.3"
 llama-index-llms-litellm = "^0.1.4"
+alembic = "^1.13.1"
+psycopg2-binary = "^2.9.9"
 
 [tool.poetry.group.dev.dependencies]
 pre-commit = "^3.7.1"

src/backend/alembic.ini

@@ -0,0 +1,110 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python-dateutil library that can be
+# installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator" below.
+# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+; sqlalchemy.url = driver://user:pass@localhost/dbname
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S