feat: Rewrite to golangv0.1.3

I have found a nice lib in go to handle XML so I migrate to it.
Go is ages easier to deploy then python.

16 files changed, 877 insertions, 634 deletions

diff --git a/.gitignore b/.gitignore
index 74e5fbc..e660fd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-.idea/
-__pycache__/
-build/
+bin/
diff --git a/LICENSE b/LICENSE
index 588d327..d5445e7 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,22 +1,661 @@
-MIT License
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+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/Makefile b/Makefile
index 7922953..69b82d9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,25 +1,26 @@
+BIN?=jnfilter
+PREFIX?=/usr/local
+BINDIR?=$(PREFIX)/bin
 
-rpm: rpm_dist
-	rpmbuild -bb \
-		./build/bdist.linux-x86_64/rpm/SPECS/jnfilter.spec \
-		--define "_topdir $(PWD)/build/bdist.linux-x86_64/rpm/"
+OUT=./bin/$(BIN)
+SERVER=./main.go
 
-rpm_dist:
-	python setup.py bdist_rpm
+GO_BUILD=go build -v -ldflags '-w -s'
+GO_RUN=go run -v
+all: build
 
-clean:
-	python setup.py clean --all
-	rm -rf dist jnfilter.egg-info
+install: build
+	install -Dm755 $(OUT) $(BINDIR)/$(BIN)
 
-docs:
-	pandoc -s \
-		--include-in-header=docs/bamboo.min.css \
-		--metadata title="Filtro para Nerdcast" \
-		--template docs/template.html \
-		-s README.md \
-		-o index.html
+build:
+	$(GO_BUILD) -o $(OUT) $(SERVER)
 
-install_deps:
-	dnf install -y rpmdevtools rpmlint python
+compress: build
+	upx -1 $(OUT)
+
+compress_into_oblivion: build
+	upx --best --ultra-brute $(OUT)
+
+run: sass tmpl
+	$(GO_RUN) $(SERVER)
 
-.PHONY: docs
diff --git a/Procfile b/Procfile
deleted file mode 100644
index 60ee589..0000000
--- a/Procfile
+++ /dev/null
@@ -1 +0,0 @@
-web: uvicorn main:app --host=0.0.0.0 --port=${PORT}
diff --git a/README.md b/README.md
index 30a5a41..2432f10 100644
--- a/README.md
+++ b/README.md
@@ -59,18 +59,3 @@ parâmetro, se tiver `nerdcast,mamicas` troque para `mamicas,nercast`
 
 o ideal e que cliente de podcast nao obrigue a fazer isso mas fazer o que as
 outras opções fazem pior.
-
-## Para programadores
-
-E um projeto simples feito em cima do FastApi. Ele vai pegar o _feed_ e filtrar
-os itens do _feed_ do podcast. Não tem cache nem nada sendo armazenado, todo
-processamento e feito a partir do feed para cada requisição.
-
-Para rodar basta instalar os requirements e rodar o seguinte código:
-
-```shell
-uvicorn main:app --host=0.0.0.0
-```
-
-E você já pode apontar o seu agregador favorito para sua maquina.
-
diff --git a/build.yml b/build.yml
deleted file mode 100644
index 10616d0..0000000
--- a/build.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-image: alpine/latest
-packages:
-  - rsync
-
-sources:
-  - https://git.sr.ht/~gabrielgio/jnfilter
-
-secrets:
-  - 008c4f67-b864-47f8-9790-cd32f2ae8516
-
-environment:
-  build: builds@gabrielgio.me
-  artifact: artifacts.gabrielgio.me/archive/jnfilter/
-  version: 0.1.0
-
-tasks:
-  - archive: |
-      cd jnfilter
-      git archive \
-          -o jnfilter-$version.tar.gz \
-          --prefix=jnfilter-$version/ HEAD
-  - deploy_archive: |
-      cd jnfilter
-      sshopts="ssh -o StrictHostKeyChecking=no"
-      rsync --mkpath --rsh="$sshopts" -rP *.tar.* $build:/var/www/$artifact
diff --git a/docs/bamboo.min.css b/docs/bamboo.min.css
deleted file mode 100644
index 5289de7..0000000
--- a/docs/bamboo.min.css
+++ /dev/null
@@ -1,369 +0,0 @@
-<style type="text/css">
-:root {
-    --b-font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
-    --b-font-mono: Consolas, Monaco, monospace;
-    --b-txt: #2e3440;
-    --b-bg-1: #fff;
-    --b-bg-2: #eceff4;
-    --b-line: #eceff4;
-    --b-link: #bf616a;
-    --b-btn-bg: #242933;
-    --b-btn-txt: #fff;
-    --b-focus: #88c0d0
-}
-
-@media (prefers-color-scheme: dark) {
-    :root {
-        --b-txt: #eceff4;
-        --b-bg-1: #2e3440;
-        --b-bg-2: #3b4252;
-        --b-line: #3b4252
-    }
-}
-
-*, :after, :before {
-    box-sizing: border-box
-}
-
-html:focus-within {
-    scroll-behavior: smooth
-}
-
-body {
-    max-width: 70ch;
-    padding: 0 1rem;
-    margin: auto;
-    background: var(--b-bg-1);
-    font-family: var(--b-font-main);
-    text-rendering: optimizeSpeed;
-    line-height: 1.5;
-    color: var(--b-txt);
-    -moz-tab-size: 4;
-    tab-size: 4;
-    word-break: break-word;
-    -webkit-tap-highlight-color: transparent;
-    -webkit-text-size-adjust: 100%
-}
-
-address, audio, blockquote, dd, details, dl, fieldset, figure, h1, h2, h3, h4, h5, h6, hr, iframe, ol, p, pre, table, ul, video {
-    margin: 0 0 1.5rem
-}
-
-h1, h2, h3, h4, h5, h6 {
-    line-height: 1.25;
-    margin-top: 2rem
-}
-
-h1 {
-    font-size: 2rem
-}
-
-h2 {
-    font-size: 1.5rem
-}
-
-h3 {
-    font-size: 1.25rem
-}
-
-h4 {
-    font-size: 1rem
-}
-
-h5 {
-    font-size: .875rem
-}
-
-h6 {
-    font-size: .75rem
-}
-
-a {
-    color: var(--b-link);
-    text-decoration: none
-}
-
-a:hover {
-    text-decoration: underline
-}
-
-img, svg, video {
-    height: auto
-}
-
-embed, iframe, img, object, svg, video {
-    max-width: 100%
-}
-
-iframe {
-    border-style: none
-}
-
-abbr[title] {
-    text-decoration: underline;
-    text-decoration: underline dotted
-}
-
-blockquote {
-    margin-left: 0;
-    padding: .5rem 0 .5rem 1.5rem;
-    border-left: .25rem solid var(--b-txt)
-}
-
-blockquote > :last-child {
-    margin-bottom: 0
-}
-
-small {
-    font-size: .875rem
-}
-
-sub, sup {
-    font-size: .75em;
-    line-height: 0;
-    position: relative;
-    vertical-align: baseline
-}
-
-sub {
-    bottom: -.25em
-}
-
-sup {
-    top: -.5em
-}
-
-hr {
-    height: 0;
-    overflow: visible;
-    border: 0;
-    border-bottom: 1px solid var(--b-line)
-}
-
-code, kbd, pre, samp, tt, var {
-    background: var(--b-bg-2);
-    border-radius: .25rem;
-    padding: .125rem .25rem;
-    font-family: var(--b-font-mono);
-    font-size: .875rem
-}
-
-pre {
-    padding: 1rem;
-    border-radius: 0;
-    overflow: auto;
-    white-space: pre
-}
-
-pre code {
-    padding: 0
-}
-
-details {
-    display: block;
-    padding: .5rem 1rem;
-    background: var(--b-bg-2);
-    border: 1px solid var(--b-line);
-    border-radius: .25rem
-}
-
-details > :last-child {
-    margin-bottom: 0
-}
-
-details[open] > summary {
-    margin-bottom: 1.5rem
-}
-
-summary {
-    display: list-item;
-    cursor: pointer;
-    font-weight: 700
-}
-
-summary:focus {
-    box-shadow: none
-}
-
-table {
-    border-collapse: collapse;
-    width: 100%;
-    text-indent: 0
-}
-
-table caption {
-    margin-bottom: .5rem
-}
-
-tr {
-    border-bottom: 1px solid var(--b-line)
-}
-
-td, th {
-    padding: .5rem 0
-}
-
-th {
-    text-align: left
-}
-
-dd, ol, ul {
-    padding-left: 2rem
-}
-
-li > ol, li > ul {
-    margin-bottom: 0
-}
-
-fieldset {
-    padding: .5rem .75rem;
-    border: 1px solid var(--b-line);
-    border-radius: .25rem
-}
-
-legend {
-    padding: 0 .25rem
-}
-
-button, input, select, textarea {
-    margin: 0;
-    padding: .5rem .75rem;
-    max-width: 100%;
-    background: var(--b-bg-2);
-    border: 0;
-    border-radius: .25rem;
-    font: inherit;
-    line-height: 1.125;
-    color: var(--b-txt)
-}
-
-input:not([size]):not([type=button i]):not([type=submit i]):not([type=reset i]):not([type=checkbox i]):not([type=radio i]), select {
-    width: 100%
-}
-
-[type=color i] {
-    min-height: 2.125rem
-}
-
-select:not([multiple]):not([size]) {
-    padding-right: 1.5rem;
-    background-repeat: no-repeat;
-    background-position: right .5rem center;
-    -moz-appearance: none;
-    -webkit-appearance: none;
-    appearance: none
-}
-
-textarea {
-    width: 100%;
-    resize: vertical
-}
-
-textarea:not([rows]) {
-    height: 8rem
-}
-
-[type=button i], [type=reset i], [type=submit i], button {
-    -webkit-appearance: button;
-    display: inline-block;
-    text-align: center;
-    white-space: nowrap;
-    background: var(--b-btn-bg);
-    color: var(--b-btn-txt);
-    border: 0;
-    cursor: pointer;
-    transition: opacity .25s
-}
-
-[type=button i]:hover, [type=reset i]:hover, [type=submit i]:hover, button:hover {
-    opacity: .75
-}
-
-[type=button i][disabled], [type=reset i][disabled], [type=submit i][disabled], button[disabled] {
-    opacity: .5
-}
-
-progress {
-    vertical-align: middle
-}
-
-[type=search i] {
-    -webkit-appearance: textfield;
-    outline-offset: -2px
-}
-
-::-webkit-inner-spin-button, ::-webkit-outer-spin-button {
-    height: auto
-}
-
-::-webkit-input-placeholder {
-    color: inherit;
-    opacity: .5
-}
-
-::-webkit-search-decoration {
-    -webkit-appearance: none
-}
-
-::-webkit-file-upload-button {
-    -webkit-appearance: button;
-    font: inherit
-}
-
-::-moz-focus-inner {
-    border-style: none;
-    padding: 0
-}
-
-:-moz-focusring {
-    outline: 1px dotted ButtonText
-}
-
-:-moz-ui-invalid {
-    box-shadow: none
-}
-
-[aria-busy=true i] {
-    cursor: progress
-}
-
-[aria-controls] {
-    cursor: pointer
-}
-
-[aria-disabled=true i], [disabled] {
-    cursor: not-allowed
-}
-
-:focus, details:focus-within {
-    outline: none;
-    box-shadow: 0 0 0 2px var(--b-focus)
-}
-
-@media (prefers-reduced-motion: reduce) {
-    html:focus-within {
-        scroll-behavior: auto
-    }
-
-    *, :after, :before {
-        animation-delay: -1ms !important;
-        animation-duration: 1ms !important;
-        animation-iteration-count: 1 !important;
-        background-attachment: scroll !important;
-        scroll-behavior: auto !important;
-        transition-delay: 0 !important;
-        transition-duration: 0 !important
-    }
-}
-
-select:not([multiple]):not([size]) {
-    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg width='16' height='16' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg' fill='%232e3440'%3E%3Cpath d='M5 6l5 5 5-5 2 1-7 7-7-7 2-1z'/%3E%3C/svg%3E")
-}
-
-@media (prefers-color-scheme: dark) {
-    select:not([multiple]):not([size]) {
-        background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg width='16' height='16' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg' fill='%23eceff4'%3E%3Cpath d='M5 6l5 5 5-5 2 1-7 7-7-7 2-1z'/%3E%3C/svg%3E")
-    }
-}
-
-</style >
\ No newline at end of file
diff --git a/docs/template.html b/docs/template.html
deleted file mode 100644
index 0d6c5d0..0000000
--- a/docs/template.html
+++ /dev/null
@@ -1,51 +0,0 @@
-<!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml" lang="$lang$" xml:lang="$lang$"$if(dir)$ dir="$dir$"$endif$>
-<head>
-  <meta charset="utf-8" />
-  <meta name="generator" content="pandoc" />
-  <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
-$for(author-meta)$
-  <meta name="author" content="$author-meta$" />
-$endfor$
-$if(date-meta)$
-  <meta name="dcterms.date" content="$date-meta$" />
-$endif$
-$if(keywords)$
-  <meta name="keywords" content="$for(keywords)$$keywords$$sep$, $endfor$" />
-$endif$
-$if(description-meta)$
-  <meta name="description" content="$description-meta$" />
-$endif$
-  <title>$if(title-prefix)$$title-prefix$ – $endif$$pagetitle$</title>
-  <style>
-    $styles.html()$
-  </style>
-$for(css)$
-  <link rel="stylesheet" href="$css$" />
-$endfor$
-$if(math)$
-  $math$
-$endif$
-  <!--[if lt IE 9]>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv-printshiv.min.js"></script>
-  <![endif]-->
-$for(header-includes)$
-  $header-includes$
-$endfor$
-</head>
-<body>
-</header>
-$if(toc)$
-<nav id="$idprefix$TOC" role="doc-toc">
-$if(toc-title)$
-<h2 id="$idprefix$toc-title">$toc-title$</h2>
-$endif$
-$table-of-contents$
-</nav>
-$endif$
-$body$
-$for(include-after)$
-$include-after$
-$endfor$
-</body>
-</html>
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..298fa2b
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module git.sr.ht/~gabrielgio/jnfilter
+
+go 1.21.7
+
+require github.com/beevik/etree v1.3.0
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..999dbad
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/beevik/etree v1.3.0 h1:hQTc+pylzIKDb23yYprodCWWTt+ojFfUZyzU09a/hmU=
+github.com/beevik/etree v1.3.0/go.mod h1:aiPf89g/1k3AShMVAzriilpcE4R/Vuor90y83zVZWFc=
diff --git a/jnfilter/__init__.py b/jnfilter/__init__.py
deleted file mode 100644
index 80b5e02..0000000
--- a/jnfilter/__init__.py
+++ /dev/null
@@ -1,102 +0,0 @@
-import re
-import httpx
-
-from functools import reduce
-from typing import List, Iterator, Union
-from xml.etree.ElementTree import ElementTree, fromstring, tostring, register_namespace
-
-from flask import Flask, Response, request
-
-app =  Flask(__name__)
-
-URL = "https://api.jovemnerd.com.br/feed-nerdcast/"
-
-RegexCollection = {
-    "nerdcast": "NerdCast [0-9]+[a-c]* -",
-    "empreendedor": "Empreendedor [0-9]+ -",
-    "mamicas": "Caneca de Mamicas [0-9]+ -",
-    "english": "Speak English [0-9]+ -",
-    "nerdcash": "NerdCash [0-9]+ -",
-    "bunker": "Lá do Bunker  [0-9]+ -",
-    "tech": "NerdTech [0-9]+ -",
-    "genera": "Generacast [0-9]+ -",
-}
-
-ATOM =  "http://www.w3.org/2005/Atom"
-ITUNES =  "http://www.itunes.com/dtds/podcast-1.0.dtd"
-GOOGLEPLAY = "http://www.google.com/schemas/play-podcasts/1.0"
-
-register_namespace("googleplay", GOOGLEPLAY)
-register_namespace("itunes", ITUNES)
-register_namespace("atom", ATOM)
-
-
-
-def match(title: str, series: List[str]) -> bool:
-    def _match(s):
-        return re.match(RegexCollection[s], title) is not None
-
-    return reduce(lambda x, y: x or _match(y), series, False)
-
-
-def filter_xml(xml_str: str, series: List[str], tag: Union[bool, None] = False) -> str:
-    tree = ElementTree(fromstring(xml_str))
-    tree_root = tree.getroot()
-    for channel in tree_root.findall("./channel"):
-
-        if tag:
-            tag = f' [{",".join(series)}]'.upper()
-            channel.find("title").text += tag
-            channel.find("description").text += tag
-            channel.find("link").text += f"?{tag}"
-            channel.find(f"{{{ITUNES}}}author").text += tag
-            channel.find(f"{{{GOOGLEPLAY}}}author").text += tag
-            channel.find(f"{{{ITUNES}}}subtitle").text += tag
-            channel.find(f"{{{ITUNES}}}summary").text += tag
-
-        for item in channel.findall("item"):
-            title = item.find("title").text
-            if not match(title, series):
-                channel.remove(item)
-
-    return tostring(tree_root, encoding='utf8', method='xml')
-
-
-def filter_titles_xml(xml_str) -> Iterator[str]:
-    tree = ElementTree(fromstring(xml_str))
-    tree_root = tree.getroot()
-    for item in tree_root.findall("./channel/item"):
-        yield item.find("title").text
-
-
-def load_and_filter(series: str, tag: Union[bool, None] = False) -> str:
-    series = series or 'nerdcast'
-    series = series.split(',')
-    with httpx.Client() as client:
-        response =client.get(URL)
-        xml_str = response.content
-        return filter_xml(xml_str, series, tag)
-
-
-def load_titles() -> Iterator[str]:
-    with httpx.Client() as client:
-        response = client.get(URL)
-        xml_str = response.content
-        return filter_titles_xml(xml_str)
-
-@app.route("/", methods=['GET', 'HEAD'])
-def root(q: str = '', tag: Union[bool, None] = False):
-    q = request.args.get("q", "")
-    tag = request.args.get("tag", False)
-    return load_and_filter(q, tag), 200,  {'Content-Type': 'application/xml'}
-
-
-@app.route("/titles", methods=['GET'])
-def titles():
-    titles = load_titles()
-    return "\n".join(titles)
-
-
-@app.route("/series", methods=['GET'])
-def series():
-    return [i[0] for i in RegexCollection.items()]
diff --git a/jnfilter/__main__.py b/jnfilter/__main__.py
deleted file mode 100644
index ff2b876..0000000
--- a/jnfilter/__main__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-from . import run
-
-if __name__ == '__main__':
-    run()
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..945b30b
--- /dev/null
+++ b/main.go
@@ -0,0 +1,188 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+
+	"github.com/beevik/etree"
+)
+
+type ErrorRequestHandler func(w http.ResponseWriter, r *http.Request) error
+
+var RegexCollection = map[string]string{
+	"nerdcast":     "NerdCast [0-9]+[a-c]* -",
+	"empreendedor": "Empreendedor [0-9]+ -",
+	"mamicas":      "Caneca de Mamicas [0-9]+ -",
+	"english":      "Speak English [0-9]+ -",
+	"nerdcash":     "NerdCash [0-9]+ -",
+	"bunker":       "Lá do Bunker [0-9]+ -",
+	"tech":         "NerdTech [0-9]+ -",
+	"genera":       "Generacast [0-9]+ -",
+}
+
+const (
+	FeedUrl = "https://api.jovemnerd.com.br/feed-nerdcast/"
+)
+
+func getSeries(r *http.Request) []string {
+	query := r.URL.Query().Get("q")
+
+	var series []string
+
+	for _, q := range strings.Split(query, ",") {
+		if _, ok := RegexCollection[q]; ok {
+			series = append(series, q)
+		}
+	}
+
+	if len(series) > 0 {
+		return series
+	}
+
+	return []string{"nerdcast"}
+}
+
+func match(title string, series []string) bool {
+	for _, s := range series {
+		if ok, err := regexp.MatchString(RegexCollection[s], title); err == nil && ok {
+			return true
+		}
+	}
+
+	return false
+}
+
+func fetchXML(_ context.Context) ([]byte, error) {
+	res, err := http.Get(FeedUrl)
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
+
+	if res.StatusCode == http.StatusOK {
+		return io.ReadAll(res.Body)
+	}
+
+	return nil, errors.New("Invalid http code")
+}
+
+func appendTag(tag *etree.Element, ap string) {
+	text := tag.Text()
+	tag.SetText(text + ap)
+}
+
+func filterBySeries(series []string, xml []byte, temper bool) ([]byte, error) {
+	doc := etree.NewDocument()
+	err := doc.ReadFromBytes(xml)
+	if err != nil {
+		return nil, err
+	}
+
+	channel := doc.FindElement("//channel")
+
+	if temper {
+		tmp := strings.ToUpper(strings.Join(series, ","))
+		tmp = fmt.Sprintf(" [%s]", tmp)
+		appendTag(channel.FindElement("title"), tmp)
+		appendTag(channel.FindElement("description"), tmp)
+		appendTag(channel.FindElement("link"), "?"+tmp)
+		appendTag(channel.FindElement("author[namespace-prefix()='itunes']"), tmp)
+		appendTag(channel.FindElement("subtitle[namespace-prefix()='itunes']"), tmp)
+		appendTag(channel.FindElement("summary[namespace-prefix()='itunes']"), tmp)
+		appendTag(channel.FindElement("author[namespace-prefix()='googleplay']"), tmp)
+
+	}
+
+	for _, tag := range channel.FindElements("item") {
+		title := tag.FindElement("title").Text()
+		if !match(title, series) {
+			channel.RemoveChild(tag)
+		}
+	}
+
+	return doc.WriteToBytes()
+}
+
+func wrap(next ErrorRequestHandler) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if err := next(w, r); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+		}
+	}
+}
+
+func titles(w http.ResponseWriter, r *http.Request) error {
+	xml, err := fetchXML(r.Context())
+	if err != nil {
+		return err
+	}
+
+	doc := etree.NewDocument()
+	err = doc.ReadFromBytes(xml)
+	if err != nil {
+		return err
+	}
+
+	series := getSeries(r)
+
+	els := doc.FindElements("//channel/item")
+	for _, e := range els {
+		txt := e.FindElement("title").Text() + "\n"
+		if match(txt, series) {
+			_, err = w.Write([]byte(txt))
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+func podcast(w http.ResponseWriter, r *http.Request) error {
+	xml, err := fetchXML(r.Context())
+	if err != nil {
+		return err
+	}
+
+	series := getSeries(r)
+	filterdXML, err := filterBySeries(series, xml, true)
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(filterdXML)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func main() {
+	var (
+		addr = flag.String("addr", ":8080", "Server address")
+	)
+
+	flag.Parse()
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/titles", wrap(titles))
+	mux.HandleFunc("/", wrap(podcast))
+
+	server := http.Server{
+		Handler: mux,
+		Addr:    *addr,
+	}
+
+	err := server.ListenAndServe()
+	if err != nil {
+		fmt.Printf("Server error: %s", err.Error())
+	}
+}
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 7692d27..0000000
--- a/setup.py
+++ /dev/null
@@ -1,23 +0,0 @@
-from setuptools import setup
-
-requirements = [
-    'httpx==0.21.1',
-    'flask==2.2.2',
-]
-
-
-setup(name='jnfilter',
-    version='0.3.0',
-    description='A FastAPI server to filter Nercast podcast feed',
-    url='https://git.sr.ht/~gabrielgio/jnfilter',
-    author='Gabriel Arakaki Giovanini',
-    author_email='mail@gabrielgio.me',
-    license='MIT',
-    packages=['jnfilter'],
-    entry_points={
-        'console_scripts': [
-            'jnfilterd=jnfilter',
-        ]
-    },
-    install_requires=requirements,
-    zip_safe=False)
diff --git a/test/dev-requirements.txt b/test/dev-requirements.txt
deleted file mode 100644
index e69de29..0000000
--- a/test/dev-requirements.txt
+++ /dev/null
diff --git a/test/test_main.py b/test/test_main.py
deleted file mode 100644
index e69de29..0000000
--- a/test/test_main.py
+++ /dev/null