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| author | 2026-03-14 00:44:19 +0300 | |
|---|---|---|
| committer | 2026-03-14 00:44:19 +0300 | |
| commit | e5d6f4c02b757c83244ba5e04fead08623a27299 (patch) | |
| tree | 5b5babb9887cafa3dbc165928dc2b0fd65265bda | |
| download | pose-master.tar.gz pose-master.tar.bz2 pose-master.tar.xz pose-master.zip | |
| -rw-r--r-- | .env.dist | 1 | ||||
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | README.md | 224 | ||||
| -rw-r--r-- | cmd/pose/main.go | 37 | ||||
| -rw-r--r-- | config.conf | 15 | ||||
| -rw-r--r-- | go.mod | 25 | ||||
| -rw-r--r-- | go.sum | 45 | ||||
| -rw-r--r-- | internal/application/application.go | 148 | ||||
| -rw-r--r-- | internal/database/db.go | 54 | ||||
| -rw-r--r-- | internal/model/item.go | 24 | ||||
| -rw-r--r-- | internal/source/feed.go | 95 | ||||
| -rw-r--r-- | internal/target/html.go | 14 | ||||
| -rw-r--r-- | internal/target/telegram.go | 112 |
14 files changed, 1470 insertions, 0 deletions
diff --git a/.env.dist b/.env.dist new file mode 100644 index 0000000..e4afe49 --- /dev/null +++ b/.env.dist @@ -0,0 +1 @@ +TELEGRAM_TOKEN= #api token (instruction: https://core.telegram.org/bots/features#botfather)
\ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8136383 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.env +pose.db
\ No newline at end of file @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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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 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + 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 GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>. diff --git a/README.md b/README.md new file mode 100644 index 0000000..a50211c --- /dev/null +++ b/README.md @@ -0,0 +1,224 @@ +# Pose + +**Pose** — пересыльщик сообщений из источников (сейчас RSS/Atom/JsonFeed) в +целевые сервисы (пока только Телеграм). + +При этом есть контроль дедупликации засчёт простого текстового файла с уже +обработанными сообщениями. + +## Установка + +### Требования + +- Go 1.25.0 или выше + +### Сборка из исходников + +```bash +go install go.neonxp.ru/pose@latest +``` + +## Конфигурация + +### Переменные окружения + +Создайте файл `.env` на основе шаблона `.env.dist`: + +```bash +cp .env.dist .env +``` + +Отредактируйте `.env` и укажите токен вашего Telegram-бота: + +```env +TELEGRAM_TOKEN=ваш_токен_бота +``` + +> **Примечание**: Для получения токена бота обратитесь к [@BotFather](https://t.me/BotFather) в Telegram. + +### Конфигурационный файл + +Основная конфигурация находится в файле `config.conf`: + +```conf +db_file "./pose.db"; + +sources { + feed "название_ленты" { + url "https://neonxp.ru/feed/"; + scrape_interval "10m"; + } +} + +targets { + telegram { + token TELEGRAM_TOKEN; + group "-1001234567890"; + } +} +``` + +#### Параметры конфигурации + +**Глобальные параметры:** + +- `db_file` — путь к файлу базы данных для дедупликации (по умолчанию: `./pose.db`) + +**Блок `sources`:** + +- `feed` — определение RSS-ленты + - `url` — URL RSS/Atom-ленты (обязательный параметр) + - `scrape_interval` — интервал проверки ленты (по умолчанию: `10m`) + +**Блок `targets`:** + +- `telegram` — определение Telegram-канала + - `token` — токен бота (можно указать напрямую или через переменную окружения) + - `group` — ID чата/канала (обязательный параметр) + +## Использование + +### Запуск + +```bash +./pose -config config.conf +``` + +Флаг `-config` позволяет указать путь к конфигурационному файлу (по умолчанию: `config.conf`). + +### Управление процессом + +Приложение поддерживает корректное завершение работы через сигналы `SIGINT` (Ctrl+C) и `SIGTERM`. + +## Архитектура + +### Структура проекта + +``` +pose/ +├── cmd/ +│ └── pose/ +│ └── main.go # Точка входа приложения +├── internal/ +│ ├── application/ +│ │ └── application.go # Основная логика приложения +│ ├── database/ +│ │ └── db.go # Простая БД для дедупликации +│ ├── model/ +│ │ └── item.go # Модель элемента ленты +│ ├── source/ +│ │ └── feed.go # Источник данных (RSS) +│ └── target/ +│ ├── telegram.go # Целевой канал (Telegram) +│ └── html.go # Обработка HTML +├── config.conf # Конфигурационный файл +├── .env.dist # Шаблон переменных окружения +├── go.mod # Go модуль +└── README.md # Этот файл +``` + +### Компоненты + +#### Application + +Основной компонент, который координирует работу источников и целей: + +- Создаёт и управляет источниками данных +- Создаёт и управляет целевыми каналами +- Распределяет элементы из источников по целям +- Управляет жизненным циклом приложения + +#### Source (Источники) + +Интерфейс для источников данных: + +```go +type Source interface { + Retrive(ctx context.Context) <-chan model.Item +} +``` + +**Feed** — реализация источника для RSS/Atom-лент: + +- Периодически опрашивает указанный URL +- Парсит ленту с помощью библиотеки `gofeed` +- Отправляет элементы в общий канал + +#### Target (Цели) + +Интерфейс для целевых каналов: + +```go +type Target interface { + Send(ctx context.Context) chan<- model.Item +} +``` + +**Telegram** — реализация цели для Telegram: + +- Получает элементы из канала +- Форматирует сообщение в HTML +- Санитайзирует HTML с помощью `bluemonday` +- Отправляет сообщение в указанный чат/канал + +#### Database + +Простая база данных для дедупликации: + +- `Exists(string) bool` — проверяет, была ли уже обработана запись +- `Append(string) error` — добавляет запись в базу +- `Close() error` — закрывает базу данных + +База данных хранит ID обработанных элементов в текстовом файле (по одной записи на строку). + +#### Model + +**Item** — модель элемента ленты: + +```go +type Item struct { + ID string // Уникальный идентификатор + Date time.Time // Дата публикации + Title string // Заголовок + Summary string // Краткое описание + Link string // Ссылка на оригинал + Img string // URL изображения (опционально) +} +``` + +Метод `BuildMessage()` форматирует элемент в HTML-сообщение для последующей отправки. + +## Зависимости + +- [`github.com/mmcdole/gofeed`](https://github.com/mmcdole/gofeed) — парсер RSS/Atom лент +- [`go.neonxp.ru/conf`](https://go.neonxp.ru/conf) — библиотека конфигурации +- [`github.com/microcosm-cc/bluemonday`](https://github.com/microcosm-cc/bluemonday) — санитайзер HTML + +## Лицензия + +Этот проект распространяется под лицензией **GNU General Public License v3.0** (GPLv3). + +Подробности см. в файле [LICENSE](LICENSE). + +## Автор + +**Александр NeonXP Кирюхин** — [https://neonxp.ru](https://neonxp.ru) <i@neonxp.ru> + +## Лицензия + +``` +Copyright (C) 2024 Alexander NeonXP Kiryukhin <i@neonxp.ru> + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU 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 General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <https://www.gnu.org/licenses/>. +``` diff --git a/cmd/pose/main.go b/cmd/pose/main.go new file mode 100644 index 0000000..4f206ba --- /dev/null +++ b/cmd/pose/main.go @@ -0,0 +1,37 @@ +package main + +import ( + "context" + "flag" + "log/slog" + "os" + "os/signal" + + "go.neonxp.ru/conf" + "go.neonxp.ru/pose/internal/application" +) + +var cfgFile = flag.String("config", "config.conf", "Path to config file") + +func main() { + ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill) + defer cancel() + + flag.Parse() + cfg, err := conf.LoadFile(*cfgFile) + if err != nil { + panic(err) + } + app, err := application.New(cfg, slog.Default()) + if err != nil { + panic(err) + } + defer func() { + if err := app.Close(); err != nil { + panic(err) + } + }() + if err := app.Run(ctx); err != nil { + panic(err) + } +} diff --git a/config.conf b/config.conf new file mode 100644 index 0000000..e157138 --- /dev/null +++ b/config.conf @@ -0,0 +1,15 @@ +db_file "./pose.db"; + +sources { + feed "neonxp.ru feed" { + url "https://neonxp.ru/feed/"; + scrape_interval "10m"; + } +} + +targets { + telegram { + token TELEGRAM_TOKEN; + group "-1003888840756"; + } +} @@ -0,0 +1,25 @@ +module go.neonxp.ru/pose + +go 1.25.0 + +require ( + github.com/mmcdole/gofeed v1.3.0 + go.neonxp.ru/conf v1.0.1 +) + +require ( + github.com/aymerick/douceur v0.2.0 // indirect + github.com/gorilla/css v1.0.1 // indirect +) + +require ( + github.com/PuerkitoBio/goquery v1.8.0 // indirect + github.com/andybalholm/cascadia v1.3.1 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/microcosm-cc/bluemonday v1.0.27 + github.com/mmcdole/goxpp v1.1.1-0.20240225020742-a0c311522b23 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + golang.org/x/net v0.26.0 // indirect + golang.org/x/text v0.16.0 // indirect +) @@ -0,0 +1,45 @@ +github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U= +github.com/PuerkitoBio/goquery v1.8.0/go.mod h1:ypIiRMtY7COPGk+I/YbZLbxsxn9g5ejnI2HSMtkjZvI= +github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c= +github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA= +github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk= +github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg= +github.com/gorilla/css v1.0.1 h1:ntNaBIghp6JmvWnxbZKANoLyuXTPZ4cAMlo6RyhlbO8= +github.com/gorilla/css v1.0.1/go.mod h1:BvnYkspnSzMmwRK+b8/xgNPLiIuNZr6vbZBTPQ2A3b0= +github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM= +github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo= +github.com/microcosm-cc/bluemonday v1.0.27 h1:MpEUotklkwCSLeH+Qdx1VJgNqLlpY2KXwXFM08ygZfk= +github.com/microcosm-cc/bluemonday v1.0.27/go.mod h1:jFi9vgW+H7c3V0lb6nR74Ib/DIB5OBs92Dimizgw2cA= +github.com/mmcdole/gofeed v1.3.0 h1:5yn+HeqlcvjMeAI4gu6T+crm7d0anY85+M+v6fIFNG4= +github.com/mmcdole/gofeed v1.3.0/go.mod h1:9TGv2LcJhdXePDzxiuMnukhV2/zb6VtnZt1mS+SjkLE= +github.com/mmcdole/goxpp v1.1.1-0.20240225020742-a0c311522b23 h1:Zr92CAlFhy2gL+V1F+EyIuzbQNbSgP4xhTODZtrXUtk= +github.com/mmcdole/goxpp v1.1.1-0.20240225020742-a0c311522b23/go.mod h1:v+25+lT2ViuQ7mVxcncQ8ch1URund48oH+jhjiwEgS8= +github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg= +github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M= +github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk= +github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= +go.neonxp.ru/conf v1.0.1 h1:UstM222KNfYWC24IbF5/lyPy0chsGf0Fs1zkSwm4KXU= +go.neonxp.ru/conf v1.0.1/go.mod h1:MnkH7DCAEW50BTyuxbAUw6zhmL1NXdOqEr0VKTVCazo= +golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= +golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ= +golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4= +golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/internal/application/application.go b/internal/application/application.go new file mode 100644 index 0000000..d61f38c --- /dev/null +++ b/internal/application/application.go @@ -0,0 +1,148 @@ +package application + +import ( + "context" + "fmt" + "log/slog" + "os" + "sync" + + cm "go.neonxp.ru/conf/model" + "go.neonxp.ru/pose/internal/database" + "go.neonxp.ru/pose/internal/model" + "go.neonxp.ru/pose/internal/source" + "go.neonxp.ru/pose/internal/target" +) + +type Application struct { + logger *slog.Logger + db *database.DB + sources []Source + targets []Target + wg sync.WaitGroup +} + +func New(cfg cm.Group, logger *slog.Logger) (*Application, error) { + dbfile := cfg.Get("db_file").StringExt("", os.LookupEnv) + db, err := database.New(dbfile) + if err != nil { + return nil, fmt.Errorf("failed create db: %w", err) + } + + app := &Application{ + logger: logger, + db: db, + sources: []Source{}, + targets: []Target{}, + wg: sync.WaitGroup{}, + } + + //Build sources + for _, it := range cfg.Get("sources").Group() { + name := it.String() + switch it.Name { + case cm.Ident("feed"): + src, err := source.NewFeed( + it.Group(), + app.logger.With(slog.String("source", name)), + ) + if err != nil { + return nil, err + } + app.sources = append(app.sources, src) + default: + return nil, fmt.Errorf("unknown source type: %s", it.Name) + } + } + + // Build targets + for _, it := range cfg.Get("targets").Group() { + name := it.String() + switch it.Name { + case cm.Ident("telegram"): + tgt, err := target.NewTelegram( + it.Group(), + app.logger.With(slog.String("target", name)), + ) + if err != nil { + return nil, err + } + app.targets = append(app.targets, tgt) + default: + return nil, fmt.Errorf("unknown target type: %s", it.Name) + } + } + + return app, nil +} + +func (a *Application) Run(ctx context.Context) error { + defer a.wg.Wait() + + // Сборный канал со всех источников + inChan := a.inChan(ctx) + + // Срез каналов всех потребителей + outChans := a.outChans(ctx) + + // Перекладывание сообщений из inChan во все outChans + for it := range inChan { + for _, ch := range outChans { + select { + case ch <- it: + slog.InfoContext(ctx, "trying send feed item to target", slog.String("id", it.ID)) + default: + slog.WarnContext(ctx, "feed item ignored because no free targets") + } + } + } + + return nil +} + +func (a *Application) Close() error { + return a.db.Close() +} + +func (a *Application) inChan(ctx context.Context) chan model.Item { + inChan := make(chan model.Item, 1) + a.wg.Go(func() { + <-ctx.Done() + close(inChan) + }) + + for _, s := range a.sources { + a.wg.Go(func() { + for it := range s.Retrive(ctx) { + if a.db.Exists(it.ID) { + continue + } + if err := a.db.Append(it.ID); err != nil { + a.logger.ErrorContext(ctx, "failed to add item to deduplication db", slog.Any("err", err)) + continue + } + + inChan <- it + } + }) + } + + return inChan +} + +func (a *Application) outChans(ctx context.Context) []chan<- model.Item { + outChans := make([]chan<- model.Item, len(a.targets)) + + for i, t := range a.targets { + outChans[i] = t.Send(ctx) + } + return outChans +} + +type Source interface { + Retrive(ctx context.Context) <-chan model.Item +} + +type Target interface { + Send(ctx context.Context) chan<- model.Item +} diff --git a/internal/database/db.go b/internal/database/db.go new file mode 100644 index 0000000..2fbfe74 --- /dev/null +++ b/internal/database/db.go @@ -0,0 +1,54 @@ +// Package database простейшая БД которая позволяет только два действия: +// +// 1. сохранить некую строку - `Append(string) error` +// 2. ответить на вопрос сохранялась ли уже когда либо эта строка - +// `Exists(string) bool` +// +// Нужна для дедупликации публикуемых записей +package database + +import ( + "bytes" + "fmt" + "os" +) + +type DB struct { + fp *os.File + cache map[string]struct{} +} + +func New(path string) (*DB, error) { + cache, _ := os.ReadFile(path) // Ignore if no DB file + + fp, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644) + if err != nil { + return nil, fmt.Errorf("failed open db file for write: %w", err) + } + db := &DB{ + fp: fp, + cache: map[string]struct{}{}, + } + for part := range bytes.SplitSeq(cache, []byte("\n")) { + db.cache[string(part)] = struct{}{} + } + + return db, nil +} + +func (d *DB) Close() error { + return d.fp.Close() +} + +func (d *DB) Exists(s string) bool { + _, ok := d.cache[s] + return ok +} + +func (d *DB) Append(s string) error { + if d.Exists(s) { + return nil + } + _, err := fmt.Fprintln(d.fp, s) + return err +} diff --git a/internal/model/item.go b/internal/model/item.go new file mode 100644 index 0000000..c18d830 --- /dev/null +++ b/internal/model/item.go @@ -0,0 +1,24 @@ +package model + +import ( + "fmt" + "time" +) + +type Item struct { + ID string + Date time.Time + Title string + Summary string + Link string + Img string +} + +func (it *Item) BuildMessage() string { + return fmt.Sprintf( + `<b>%s</b><br /><br />%s<br />Читать дальше: <a href="%[3]s">%[3]s</a>`, + it.Title, + it.Summary, + it.Link, + ) +} diff --git a/internal/source/feed.go b/internal/source/feed.go new file mode 100644 index 0000000..31f8535 --- /dev/null +++ b/internal/source/feed.go @@ -0,0 +1,95 @@ +package source + +import ( + "context" + "errors" + "fmt" + "log/slog" + "time" + + "github.com/mmcdole/gofeed" + cm "go.neonxp.ru/conf/model" + "go.neonxp.ru/pose/internal/model" +) + +var ( + ErrNoFeedAddress = errors.New("no feed address") +) + +type Feed struct { + logger *slog.Logger + feed string + scrapeInterval time.Duration + feedParser *gofeed.Parser +} + +func NewFeed(cfg cm.Group, logger *slog.Logger) (*Feed, error) { + feedSource := cfg.Get("url").String() + if feedSource == "" { + return nil, ErrNoFeedAddress + } + durStr := cfg.Get("scrape_interval").String() + if durStr == "" { + durStr = "10m" + } + dur, err := time.ParseDuration(durStr) + if err != nil { + return nil, fmt.Errorf("failed parse duration at source: %w", err) + } + return &Feed{ + feed: feedSource, + scrapeInterval: dur, + feedParser: gofeed.NewParser(), + }, nil +} + +func (a *Feed) Retrive(ctx context.Context) <-chan model.Item { + out := make(chan model.Item) + ticker := time.NewTicker(a.scrapeInterval) + go func() { + <-ctx.Done() + ticker.Stop() + }() + go func() { + defer close(out) + for _, item := range a.scrapeFeed(ctx) { + out <- item + } + for range ticker.C { + for _, item := range a.scrapeFeed(ctx) { + out <- item + } + } + }() + + return out +} + +func (a *Feed) scrapeFeed(ctx context.Context) []model.Item { + feed, err := a.feedParser.ParseURLWithContext(a.feed, ctx) + if err != nil { + a.logger.Error("failed parse feed", slog.Any("err", err)) + return nil + } + result := make([]model.Item, 0, len(feed.Items)) + for _, it := range feed.Items { + date := time.Now() + if it.PublishedParsed != nil { + date = *it.PublishedParsed + } + image := "" + if it.Image != nil { + image = it.Image.URL + } + result = append(result, model.Item{ + ID: it.GUID, + Date: date, + Title: it.Title, + Summary: it.Description, + Link: it.Link, + Img: image, + }) + } + + return result +} diff --git a/internal/target/html.go b/internal/target/html.go new file mode 100644 index 0000000..84d8662 --- /dev/null +++ b/internal/target/html.go @@ -0,0 +1,14 @@ +package target + +import "strings" + +func processHTML(html string) string { + html = strings.ReplaceAll(html, "\n", " ") + html = strings.ReplaceAll(html, "<br>", "\n") + html = strings.ReplaceAll(html, "<br />", "\n") + html = strings.ReplaceAll(html, "<br/>", "\n") + html = strings.ReplaceAll(html, "<p>", "") + html = strings.ReplaceAll(html, "</p>", "\n") + + return html +} diff --git a/internal/target/telegram.go b/internal/target/telegram.go new file mode 100644 index 0000000..f4d4aff --- /dev/null +++ b/internal/target/telegram.go @@ -0,0 +1,112 @@ +package target + +import ( + "context" + "errors" + "fmt" + "io" + "log/slog" + "net/http" + "net/url" + "os" + "time" + + "github.com/microcosm-cc/bluemonday" + cm "go.neonxp.ru/conf/model" + "go.neonxp.ru/pose/internal/model" +) + +var ( + ErrNoToken = errors.New("no api token") + ErrNoGroup = errors.New("no group") +) + +const telegramRequestTimeout = 30 * time.Second +const telegramMaxItemsChan = 32 + +type Telegram struct { + logger *slog.Logger + apiToken string + group string + client *http.Client + policy *bluemonday.Policy +} + +func NewTelegram(cfg cm.Group, logger *slog.Logger) (*Telegram, error) { + token := cfg.Get("token").StringExt("", os.LookupEnv) + if token == "" { + return nil, ErrNoToken + } + group := cfg.Get("group").StringExt("", os.LookupEnv) + if group == "" { + return nil, ErrNoGroup + } + + pol := bluemonday.NewPolicy() + + pol.AllowAttrs("href").OnElements("a") + pol.AllowAttrs("class").OnElements("span") + pol.AllowElements("p", "br", "b", "strong", "i", "em", "u", "ins", "s", "strike", "del", "code", "pre", "blockquote") + + return &Telegram{ + logger: logger, + apiToken: token, + group: group, + client: &http.Client{Timeout: telegramRequestTimeout}, + policy: pol, + }, nil +} + +func (t *Telegram) Send(ctx context.Context) chan<- model.Item { + ch := make(chan model.Item, telegramMaxItemsChan) + go func() { + defer close(ch) + for { + select { + case <-ctx.Done(): + return + case item := <-ch: + if err := t.sendMessage(item); err != nil { + t.logger.ErrorContext(ctx, "failed send feed item to telegram", slog.Any("err", err)) + continue + } + t.logger.InfoContext(ctx, "send item to telegram", slog.String("id", item.ID)) + } + } + }() + + return ch +} + +func (t *Telegram) sendMessage(it model.Item) error { + sendMessageURL := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", t.apiToken) + + message := it.BuildMessage() + message = t.policy.Sanitize(message) + message = processHTML(message) + + params := url.Values{} + params.Set("chat_id", t.group) + params.Set("text", message) + params.Set("parse_mode", "HTML") + + resp, err := t.client.PostForm(sendMessageURL, params) + if err != nil { + return err + } + + if resp.StatusCode < 200 || resp.StatusCode >= 300 { + msg, err := io.ReadAll(resp.Body) + if err != nil { + return fmt.Errorf("failed read error body: %w", err) + } + return fmt.Errorf( + "invalid status code %d (%s): %s", + resp.StatusCode, + resp.Status, + string(msg), + ) + } + + return nil +} |
