feat: config via flag or env + refactor (#8)

.goreleaser.yml

@@ -3,7 +3,7 @@ before:
     - go mod download
 builds:
 - id: main
-  main: main.go
+  main: .
   binary: rastermimimi
   env:
   - CGO_ENABLED=0

README.md

@@ -1,3 +1,24 @@
 # rastermimimi
 
 Schaut sich die diversen Programmraster Quellen an und macht mimimi.
+
+## Usage
+
+```
+Usage of rastermimimi:
+  -duration int
+        How far ahead to check in days (default 60)
+  -libretime string
+        URL of Libretime Instance to compare (default "https://airtime.service.int.rabe.ch")
+  -listen-addr string
+        listen address (default ":8080")
+  -url string
+        URL of RaBe Website (default "https://rabe.ch")
+```
+
+## Development
+
+Run mimimi to test changes:
+```
+go run .
+```

app.go

@@ -0,0 +1,204 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"html"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"sort"
+	"sync/atomic"
+	"time"
+)
+
+type App struct {
+	config AppConfig
+
+	errors atomic.Value
+}
+
+func NewApp(config AppConfig) *App {
+	return &App{config: config}
+}
+
+func (a *App) Load() {
+	grid := make(map[string]gridSlot)
+	errors := make(gridErrors, 0)
+
+	grid, errors = a.loadWebsite(grid, errors)
+	grid = a.loadLibretime(grid)
+
+	errors = a.checkForErrors(grid, errors)
+
+	log.Printf("Loaded %d grid entries and %d errors.\n", len(grid), len(errors))
+
+	a.errors.Store(errors)
+}
+
+func (a *App) GetErrors() gridErrors {
+	return a.errors.Load().(gridErrors)
+}
+
+func (a *App) appendError(errors gridErrors, message string, start LocalTime, slot gridSlot) gridErrors {
+	errors = append(errors, gridError{
+		Message: message,
+		Time:    start.GetTime(),
+		Slot:    slot,
+	})
+	return errors
+}
+
+func (a *App) loadWebsite(grid map[string]gridSlot, errors gridErrors) (map[string]gridSlot, gridErrors) {
+	// get config
+	url := a.config.websiteURL
+	duration := a.config.duration
+
+	start := time.Now()
+	end := start.AddDate(0, 0, duration)
+	resp, err := http.Get(
+		fmt.Sprintf(
+			"%s/wp-admin/admin-ajax.php?action=eventorganiser-fullcal&start=%s&end=%s&timeformat=%s",
+			url,
+			start.Format("2006-01-02"),
+			end.Format("2006-01-02"),
+			"G%3Ai",
+		),
+	)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// parse JSON
+	var events []WebsiteEventOrganizerCalendarEvent
+	err = json.Unmarshal(body, &events)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for _, event := range events {
+		start := event.Start.String()
+		slot, ok := grid[start]
+		if ok {
+			if slot.WebsiteEventOrganizerCalendarEvent.Title != "" {
+				errors = a.appendError(
+					errors,
+					fmt.Sprintf("Mehrfacheintrag auf Webseite: %s (neu: %s)",
+						slot.WebsiteEventOrganizerCalendarEvent.Title, event.Title),
+					slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+			}
+			slot.WebsiteEventOrganizerCalendarEvent = event
+			grid[start] = slot
+		} else {
+			grid[start] = gridSlot{
+				WebsiteEventOrganizerCalendarEvent: event,
+			}
+		}
+	}
+	return grid, errors
+}
+
+func (a *App) loadLibretime(grid map[string]gridSlot) map[string]gridSlot {
+	// get config
+	url := a.config.libretimeURL
+	duration := a.config.duration
+
+	// read from libretime calendar
+	resp, err := http.Get(fmt.Sprintf("%s/api/live-info-v2?days=%d&shows=600000000", url, duration+1))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// parse JSON
+	var liveInfo LibreTimeLiveInfoV2
+	err = json.Unmarshal(body, &liveInfo)
+	if err != nil {
+		log.Fatal(err)
+	}
+	liveInfo.Shows.Next = append(liveInfo.Shows.Next, liveInfo.Shows.Current)
+	for _, ltShow := range liveInfo.Shows.Next {
+		start := ltShow.Starts.String()
+		slot, ok := grid[start]
+
+		if ok {
+			if slot.LibreTimeLiveInfoV2Show.Name != "" {
+				log.Panicf("slot %s already has a libretime title", start)
+			}
+			ltShow.Name = html.UnescapeString(ltShow.Name)
+			slot.LibreTimeLiveInfoV2Show = ltShow
+			grid[start] = slot
+		} else {
+			grid[start] = gridSlot{
+				LibreTimeLiveInfoV2Show: ltShow,
+			}
+		}
+	}
+	return grid
+}
+
+func (a *App) checkForErrors(grid map[string]gridSlot, errors gridErrors) gridErrors {
+	for _, slot := range grid {
+		// skip past events
+		if slot.WebsiteEventOrganizerCalendarEvent.Title != "" && slot.WebsiteEventOrganizerCalendarEvent.Start.Before(time.Now()) {
+			continue
+		}
+		if slot.WebsiteEventOrganizerCalendarEvent.Title != "" && slot.LibreTimeLiveInfoV2Show.Name == "" {
+			if slot.WebsiteEventOrganizerCalendarEvent.Title != "Klangbecken" {
+				errors = a.appendError(errors,
+					fmt.Sprintf("%s fehlt in LibreTime.",
+						slot.WebsiteEventOrganizerCalendarEvent.Title),
+					slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+			}
+		} else if slot.LibreTimeLiveInfoV2Show.Name != "" && slot.WebsiteEventOrganizerCalendarEvent.Title == "" {
+			if slot.LibreTimeLiveInfoV2Show.Name != "Klangbecken" {
+				errors = a.appendError(errors,
+					fmt.Sprintf("%s fehlt auf Web Seite.",
+						slot.LibreTimeLiveInfoV2Show.Name),
+					slot.LibreTimeLiveInfoV2Show.Starts, slot)
+			}
+		} else if slot.WebsiteEventOrganizerCalendarEvent.Title != slot.LibreTimeLiveInfoV2Show.Name {
+			errors = a.appendError(errors,
+				fmt.Sprintf("Titel auf Webseite (%s) stimmt nicht mit LibreTime (%s) überein.",
+					slot.WebsiteEventOrganizerCalendarEvent.Title, slot.LibreTimeLiveInfoV2Show.Name),
+				slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+		}
+
+		// skip events not on both sides for further checks
+		if slot.WebsiteEventOrganizerCalendarEvent.Title == "" || slot.LibreTimeLiveInfoV2Show.Name == "" {
+			continue
+		}
+
+		if slot.LibreTimeLiveInfoV2Show.URL != slot.WebsiteEventOrganizerCalendarEvent.URL {
+			if slot.WebsiteEventOrganizerCalendarEvent.URL == "#" {
+				errors = a.appendError(errors,
+					fmt.Sprintf("Keine URL für Sendung %s auf Website hinterlegt.",
+						slot.WebsiteEventOrganizerCalendarEvent.Title),
+					slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+			} else {
+				errors = a.appendError(errors,
+					fmt.Sprintf("URL auf Webseite (%s) stimmt nicht mit LibreTime (%s) überein.",
+						slot.WebsiteEventOrganizerCalendarEvent.URL, slot.LibreTimeLiveInfoV2Show.URL),
+					slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+			}
+		}
+
+		// we allow a difference of > 10 minutes at the end to account for preproduced broadcasts that go into overtime
+		if !slot.LibreTimeLiveInfoV2Show.Ends.Equal(slot.WebsiteEventOrganizerCalendarEvent.End.Time) && slot.LibreTimeLiveInfoV2Show.Ends.Time.Sub(slot.WebsiteEventOrganizerCalendarEvent.End.Time) > time.Minute*10 {
+			errors = a.appendError(errors,
+				fmt.Sprintf("Ende auf Webseite (%s) stimmt nicht mit LibreTime (%s) überein.",
+					slot.WebsiteEventOrganizerCalendarEvent.End.Format("02 Jan 2006 15:04:05"),
+					slot.LibreTimeLiveInfoV2Show.Ends.Format("02 Jan 2006 15:04:05")),
+				slot.WebsiteEventOrganizerCalendarEvent.Start, slot)
+		}
+
+	}
+	sort.Sort(errors)
+	return errors
+}

index.gohtml

@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<title>Raster Mimimi</title>
+<style>
+	html, body {
+		font-family: sans-serif;
+		font-size: 0.9em;
+	}
+	@media (prefers-color-scheme: dark) {
+		html, body {
+			background-color: black;
+			color: lightgray;
+		}
+		:link {
+			color: mediumpurple;
+		}
+	}
+	article {
+		border: 1px solid gray;
+		padding: 1em;
+		margin-bottom: 0.5em;
+	}
+	section {
+		margin-left: 2em;
+	}
+	section.lead {
+		font-size: 1.5em;
+		margin-left: 0;
+	}
+</style>
+<script>
+	window.onbeforeprint = function(event) {
+		document.body.style.display = 'none';
+		window.alert('ja nid usdrucke!, so vowäge umwäut!')
+	};
+	window.onafterprint = function(event) {
+		document.body.style.display = ''
+	};
+</script>
+<h1>technisches Programmraster Mimimi</h1>
+<nav><a href="/refresh">Refresh...</a> | <a href="#" onclick="alert('ja nid usdrucke!, so vowäge umwäut!')">Drucken...</a> | <a href="https://github.com/radiorabe/rastermimimi">GitHub...</a></nav>
+<p>Dieses Tool hat in den nächsten 60 Tagen {{.|len}} Mimimis gefunden.</p>
+{{$otime := "02 Jan 2006 15:04:05"}}
+{{range .}}
+{{$time := .Time.Format "02 Jan 2006 15:04:05"}}
+{{if ne $time $otime}}
+<hr>
+<h2>{{$time}}</h2>
+{{end}}
+<article>
+	<section class="lead">{{.Message}}</section>
+	<!-- {{.}} -->
+	{{if .Slot.WebsiteEventOrganizerCalendarEvent.Title}}
+	<section>
+	<h3>Web: {{.Slot.WebsiteEventOrganizerCalendarEvent.Title}}</h3>
+	<p>{{.Slot.WebsiteEventOrganizerCalendarEvent.Start.Format "02 Jan 2006 15:04:05"}} - {{.Slot.WebsiteEventOrganizerCalendarEvent.End.Format "02 Jan 2006 15:04:05"}}</p>
+	<p><b>URL:</b> <code>{{.Slot.WebsiteEventOrganizerCalendarEvent.URL}}</code></p>
+	</section>
+	{{end}}
+	{{if .Slot.LibreTimeLiveInfoV2Show.Name}}
+	<section>
+	<h3>LibreTime: {{.Slot.LibreTimeLiveInfoV2Show.Name}}</h3>
+	<p>{{.Slot.LibreTimeLiveInfoV2Show.Starts.Format "02 Jan 2006 15:04:05"}} - {{.Slot.LibreTimeLiveInfoV2Show.Ends.Format "02 Jan 2006 15:04:05"}}</p>
+	<p><b>URL:</b> <code>{{.Slot.LibreTimeLiveInfoV2Show.URL}}</code></p>
+	</section>
+	{{end}}
+</article>
+{{$otime = $time}}
+{{end}}