From 3293a10abe372e27a0e4eb25cbb2169151dacda1 Mon Sep 17 00:00:00 2001
From: Yax <kianby@madyanne.fr>
Date: Sun, 27 Dec 2020 20:04:20 +0100
Subject: [PATCH] tinydb migration

---
 poetry.lock               | 298 ++++++++++++++++++++------------------
 pyproject.toml            |   1 +
 run.py                    |   3 +-
 stacosys/core/database.py |  21 +++
 4 files changed, 180 insertions(+), 143 deletions(-)

diff --git a/poetry.lock b/poetry.lock
index 760ad71..997c104 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,22 +1,21 @@
 [[package]]
-category = "dev"
-description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 name = "appdirs"
+version = "1.4.3"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.3"
 
 [[package]]
-category = "main"
-description = "In-process task scheduler with Cron-like capabilities"
 name = "apscheduler"
+version = "3.6.3"
+description = "In-process task scheduler with Cron-like capabilities"
+category = "main"
 optional = false
 python-versions = "*"
-version = "3.6.3"
 
 [package.dependencies]
 pytz = "*"
-setuptools = ">=0.7"
 six = ">=1.4.0"
 tzlocal = ">=1.2"
 
@@ -34,21 +33,20 @@ twisted = ["twisted"]
 zookeeper = ["kazoo"]
 
 [[package]]
-category = "dev"
-description = "Atomic file writes."
-marker = "sys_platform == \"win32\""
 name = "atomicwrites"
+version = "1.3.0"
+description = "Atomic file writes."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.3.0"
 
 [[package]]
-category = "dev"
-description = "Classes Without Boilerplate"
 name = "attrs"
+version = "19.3.0"
+description = "Classes Without Boilerplate"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
 
 [package.extras]
 azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
@@ -57,12 +55,12 @@ docs = ["sphinx", "zope.interface"]
 tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 
 [[package]]
-category = "dev"
-description = "The uncompromising code formatter."
 name = "black"
+version = "19.10b0"
+description = "The uncompromising code formatter."
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "19.10b0"
 
 [package.dependencies]
 appdirs = "*"
@@ -77,51 +75,50 @@ typed-ast = ">=1.4.0"
 d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
 [[package]]
-category = "main"
-description = "Python package for providing Mozilla's CA Bundle."
 name = "certifi"
+version = "2019.11.28"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
 optional = false
 python-versions = "*"
-version = "2019.11.28"
 
 [[package]]
-category = "main"
-description = "Universal encoding detector for Python 2 and 3"
 name = "chardet"
+version = "3.0.4"
+description = "Universal encoding detector for Python 2 and 3"
+category = "main"
 optional = false
 python-versions = "*"
-version = "3.0.4"
 
 [[package]]
-category = "main"
-description = "Composable command line interface toolkit"
 name = "click"
+version = "7.0"
+description = "Composable command line interface toolkit"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "7.0"
 
 [[package]]
-category = "dev"
-description = "Cross-platform colored terminal text."
-marker = "sys_platform == \"win32\""
 name = "colorama"
+version = "0.4.3"
+description = "Cross-platform colored terminal text."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
 
 [[package]]
-category = "main"
-description = "A simple framework for building complex web applications."
 name = "flask"
+version = "1.1.1"
+description = "A simple framework for building complex web applications."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "1.1.1"
 
 [package.dependencies]
-Jinja2 = ">=2.10.1"
-Werkzeug = ">=0.15"
 click = ">=5.1"
 itsdangerous = ">=0.24"
+Jinja2 = ">=2.10.1"
+Werkzeug = ">=0.15"
 
 [package.extras]
 dev = ["pytest", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
@@ -129,12 +126,12 @@ docs = ["sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-
 dotenv = ["python-dotenv"]
 
 [[package]]
-category = "main"
-description = "Adds APScheduler support to Flask"
 name = "flask-apscheduler"
+version = "1.11.0"
+description = "Adds APScheduler support to Flask"
+category = "main"
 optional = false
 python-versions = "*"
-version = "1.11.0"
 
 [package.dependencies]
 apscheduler = ">=3.2.0"
@@ -142,21 +139,20 @@ flask = ">=0.10.1"
 python-dateutil = ">=2.4.2"
 
 [[package]]
-category = "main"
-description = "Internationalized Domain Names in Applications (IDNA)"
 name = "idna"
+version = "2.8"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.8"
 
 [[package]]
-category = "dev"
-description = "Read metadata from Python packages"
-marker = "python_version < \"3.8\""
 name = "importlib-metadata"
+version = "1.3.0"
+description = "Read metadata from Python packages"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.3.0"
 
 [package.dependencies]
 zipp = ">=0.5"
@@ -166,20 +162,20 @@ docs = ["sphinx", "rst.linker"]
 testing = ["packaging", "importlib-resources"]
 
 [[package]]
-category = "main"
-description = "Various helpers to pass data to untrusted environments and back."
 name = "itsdangerous"
+version = "1.1.0"
+description = "Various helpers to pass data to untrusted environments and back."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.1.0"
 
 [[package]]
-category = "main"
-description = "A very fast and expressive template engine."
 name = "jinja2"
+version = "2.10.3"
+description = "A very fast and expressive template engine."
+category = "main"
 optional = false
 python-versions = "*"
-version = "2.10.3"
 
 [package.dependencies]
 MarkupSafe = ">=0.23"
@@ -188,170 +184,162 @@ MarkupSafe = ">=0.23"
 i18n = ["Babel (>=0.8)"]
 
 [[package]]
-category = "main"
-description = "Python implementation of Markdown."
 name = "markdown"
+version = "3.1.1"
+description = "Python implementation of Markdown."
+category = "main"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
-version = "3.1.1"
-
-[package.dependencies]
-setuptools = ">=36"
 
 [package.extras]
 testing = ["coverage", "pyyaml"]
 
 [[package]]
-category = "main"
-description = "Safely add untrusted strings to HTML/XML markup."
 name = "markupsafe"
+version = "1.1.1"
+description = "Safely add untrusted strings to HTML/XML markup."
+category = "main"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
-version = "1.1.1"
 
 [[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
 name = "more-itertools"
+version = "8.0.2"
+description = "More routines for operating on iterables, beyond itertools"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "8.0.2"
 
 [[package]]
-category = "dev"
-description = "Core utilities for Python packages"
 name = "packaging"
+version = "19.2"
+description = "Core utilities for Python packages"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.2"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
 six = "*"
 
 [[package]]
-category = "dev"
-description = "Utility library for gitignore style pattern matching of file paths."
 name = "pathspec"
+version = "0.7.0"
+description = "Utility library for gitignore style pattern matching of file paths."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.7.0"
 
 [[package]]
-category = "main"
-description = "a little orm"
 name = "peewee"
+version = "3.13.1"
+description = "a little orm"
+category = "main"
 optional = false
 python-versions = "*"
-version = "3.13.1"
 
 [[package]]
-category = "dev"
-description = "plugin and hook calling mechanisms for python"
 name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.13.1"
 
 [package.dependencies]
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 
 [package.extras]
 dev = ["pre-commit", "tox"]
 
 [[package]]
-category = "main"
-description = "A configuration library."
 name = "profig"
+version = "0.5.1"
+description = "A configuration library."
+category = "main"
 optional = false
 python-versions = "*"
-version = "0.5.1"
 
 [[package]]
-category = "dev"
-description = "library with cross-python path, ini-parsing, io, code, log facilities"
 name = "py"
+version = "1.8.1"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.8.1"
 
 [[package]]
-category = "dev"
-description = "Python parsing module"
 name = "pyparsing"
+version = "2.4.6"
+description = "Python parsing module"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "2.4.6"
 
 [[package]]
-category = "main"
-description = "Generate RSS2 using a Python data structure"
 name = "pyrss2gen"
+version = "1.1"
+description = "Generate RSS2 using a Python data structure"
+category = "main"
 optional = false
 python-versions = "*"
-version = "1.1"
 
 [[package]]
-category = "dev"
-description = "pytest: simple powerful testing with Python"
 name = "pytest"
+version = "5.3.2"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "5.3.2"
 
 [package.dependencies]
-atomicwrites = ">=1.0"
+atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=17.4.0"
-colorama = "*"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
 py = ">=1.5.0"
 wcwidth = "*"
 
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
-
 [package.extras]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
-category = "main"
-description = "Extensions to the standard Python datetime module"
 name = "python-dateutil"
+version = "2.8.1"
+description = "Extensions to the standard Python datetime module"
+category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
-version = "2.8.1"
 
 [package.dependencies]
 six = ">=1.5"
 
 [[package]]
-category = "main"
-description = "World timezone definitions, modern and historical"
 name = "pytz"
+version = "2019.3"
+description = "World timezone definitions, modern and historical"
+category = "main"
 optional = false
 python-versions = "*"
-version = "2019.3"
 
 [[package]]
-category = "dev"
-description = "Alternative regular expression module, to replace re."
 name = "regex"
+version = "2020.2.20"
+description = "Alternative regular expression module, to replace re."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "2020.2.20"
 
 [[package]]
-category = "main"
-description = "Python HTTP for Humans."
 name = "requests"
+version = "2.22.0"
+description = "Python HTTP for Humans."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.22.0"
 
 [package.dependencies]
 certifi = ">=2017.4.17"
@@ -361,82 +349,90 @@ urllib3 = ">=1.21.1,<1.25.0 || >1.25.0,<1.25.1 || >1.25.1,<1.26"
 
 [package.extras]
 security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)"]
-socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7)", "win-inet-pton"]
+socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
-category = "dev"
-description = "a python refactoring library..."
 name = "rope"
+version = "0.16.0"
+description = "a python refactoring library..."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.16.0"
 
 [package.extras]
 dev = ["pytest"]
 
 [[package]]
-category = "main"
-description = "Python 2 and 3 compatibility utilities"
 name = "six"
+version = "1.13.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "1.13.0"
 
 [[package]]
-category = "dev"
-description = "Python Library for Tom's Obvious, Minimal Language"
+name = "tinydb"
+version = "4.3.0"
+description = "TinyDB is a tiny, document oriented database optimized for your happiness :)"
+category = "main"
+optional = false
+python-versions = ">=3.5,<4.0"
+
+[[package]]
 name = "toml"
+version = "0.10.0"
+description = "Python Library for Tom's Obvious, Minimal Language"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.10.0"
 
 [[package]]
-category = "dev"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
 name = "typed-ast"
+version = "1.4.1"
+description = "a fork of Python 2 and 3 ast modules with type comment support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.1"
 
 [[package]]
-category = "main"
-description = "tzinfo object for the local timezone"
 name = "tzlocal"
+version = "2.0.0"
+description = "tzinfo object for the local timezone"
+category = "main"
 optional = false
 python-versions = "*"
-version = "2.0.0"
 
 [package.dependencies]
 pytz = "*"
 
 [[package]]
-category = "main"
-description = "HTTP library with thread-safe connection pooling, file post, and more."
 name = "urllib3"
+version = "1.25.7"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, <4"
-version = "1.25.7"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
-socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
-category = "dev"
-description = "Measures number of Terminal column cells of wide-character codes"
 name = "wcwidth"
+version = "0.1.7"
+description = "Measures number of Terminal column cells of wide-character codes"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.7"
 
 [[package]]
-category = "main"
-description = "The comprehensive WSGI web application library."
 name = "werkzeug"
+version = "0.16.0"
+description = "The comprehensive WSGI web application library."
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.16.0"
 
 [package.extras]
 dev = ["pytest", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinx-issues"]
@@ -444,13 +440,12 @@ termcolor = ["termcolor"]
 watchdog = ["watchdog"]
 
 [[package]]
-category = "dev"
-description = "Backport of pathlib-compatible object wrapper for zip files"
-marker = "python_version < \"3.8\""
 name = "zipp"
+version = "0.6.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "dev"
 optional = false
 python-versions = ">=2.7"
-version = "0.6.0"
 
 [package.dependencies]
 more-itertools = "*"
@@ -460,8 +455,9 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["pathlib2", "contextlib2", "unittest2"]
 
 [metadata]
-content-hash = "d698fc06cf58f4d228449cb76f48e8d739c323abd535427746d70dbbcaa4924c"
+lock-version = "1.1"
 python-versions = "^3.7"
+content-hash = "6a714b61f2ae04be8377aa2fb513c09bdae22cb71685b4b7ddfed843bfd9ff08"
 
 [metadata.files]
 appdirs = [
@@ -555,6 +551,11 @@ markupsafe = [
     {file = "MarkupSafe-1.1.1-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6"},
     {file = "MarkupSafe-1.1.1-cp37-cp37m-win32.whl", hash = "sha256:b00c1de48212e4cc9603895652c5c410df699856a2853135b3967591e4beebc2"},
     {file = "MarkupSafe-1.1.1-cp37-cp37m-win_amd64.whl", hash = "sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux1_i686.whl", hash = "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-win32.whl", hash = "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b"},
+    {file = "MarkupSafe-1.1.1-cp38-cp38-win_amd64.whl", hash = "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"},
     {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
 ]
 more-itertools = [
@@ -638,6 +639,10 @@ six = [
     {file = "six-1.13.0-py2.py3-none-any.whl", hash = "sha256:1f1b7d42e254082a9db6279deae68afb421ceba6158efa6131de7b3003ee93fd"},
     {file = "six-1.13.0.tar.gz", hash = "sha256:30f610279e8b2578cab6db20741130331735c781b56053c59c4076da27f06b66"},
 ]
+tinydb = [
+    {file = "tinydb-4.3.0-py3-none-any.whl", hash = "sha256:c8a8887269927e077f3aa16fddbf4debd176c10edc4ac8a5ce48ced0b10adf8c"},
+    {file = "tinydb-4.3.0.tar.gz", hash = "sha256:1d102d06f9bb22d739d8061b490c64d420de70dca5f95ebd43a492c43c7bd303"},
+]
 toml = [
     {file = "toml-0.10.0-py2.7.egg", hash = "sha256:f1db651f9657708513243e61e6cc67d101a39bad662eaa9b5546f789338e07a3"},
     {file = "toml-0.10.0-py2.py3-none-any.whl", hash = "sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e"},
@@ -651,19 +656,28 @@ typed-ast = [
     {file = "typed_ast-1.4.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:269151951236b0f9a6f04015a9004084a5ab0d5f19b57de779f908621e7d8b75"},
     {file = "typed_ast-1.4.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:24995c843eb0ad11a4527b026b4dde3da70e1f2d8806c99b7b4a7cf491612652"},
     {file = "typed_ast-1.4.1-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:fe460b922ec15dd205595c9b5b99e2f056fd98ae8f9f56b888e7a17dc2b757e7"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:fcf135e17cc74dbfbc05894ebca928ffeb23d9790b3167a674921db19082401f"},
     {file = "typed_ast-1.4.1-cp36-cp36m-win32.whl", hash = "sha256:4e3e5da80ccbebfff202a67bf900d081906c358ccc3d5e3c8aea42fdfdfd51c1"},
     {file = "typed_ast-1.4.1-cp36-cp36m-win_amd64.whl", hash = "sha256:249862707802d40f7f29f6e1aad8d84b5aa9e44552d2cc17384b209f091276aa"},
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 tzlocal = [
diff --git a/pyproject.toml b/pyproject.toml
index 2df28ab..99ae291 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,6 +15,7 @@ profig = "^0.5.1"
 markdown = "^3.1.1"
 flask_apscheduler = "^1.11.0"
 requests = "^2.22.0"
+tinydb = "^4.3.0"
 
 [tool.poetry.dev-dependencies]
 pytest = "^5.2"
diff --git a/run.py b/run.py
index 04b9d8f..6fd1a19 100644
--- a/run.py
+++ b/run.py
@@ -63,7 +63,8 @@ def stacosys_server(config_pathname):
     from stacosys.core import database
 
     database.setup()
-
+    database.dump_db()
+    
     # cron email fetcher
     app.config.from_object(
         JobConfig(
diff --git a/stacosys/core/database.py b/stacosys/core/database.py
index 42ea107..a50165b 100644
--- a/stacosys/core/database.py
+++ b/stacosys/core/database.py
@@ -15,3 +15,24 @@ def setup():
     from stacosys.model.comment import Comment
 
     get_db().create_tables([Site, Comment], safe=True)
+
+from playhouse.shortcuts import model_to_dict
+import json
+
+def tojson_model(comment):
+    dcomment = model_to_dict(comment)
+    del dcomment['site']
+    tcomment = json.dumps(dcomment, indent=4, sort_keys=True, default=str)
+    return json.loads(tcomment) 
+
+def tojson_models(models):
+    print(json.dumps(list(models.dicts()), indent=4, sort_keys=True, default=str))
+
+def dump_db():
+    from tinydb import TinyDB, Query
+    from stacosys.model.comment import Comment
+    db = TinyDB('db.json')
+    for comment in Comment.select():
+        cc = tojson_model(comment)
+        print(cc)
+        db.insert(cc)