[template] Add functions parseDuration, parseDurationToSeconds

Signed-off-by: Knut Ahlers <knut@ahlers.me>

docs/content/configuration/templating.md

@@ -392,6 +392,32 @@ Example:
 < @user @user @user
 ```
 
+### `parseDuration`
+
+Parses a duration (i.e. 1h25m10s) into a time.Duration
+
+Syntax: `parseDuration <duration>`
+
+Example:
+
+```
+# {{ parseDuration "1h30s" }}
+< 1h0m30s
+```
+
+### `parseDurationToSeconds`
+
+Parses a duration (i.e. 1h25m10s) into a number of seconds
+
+Syntax: `parseDurationToSeconds <duration>`
+
+Example:
+
+```
+# {{ parseDurationToSeconds "1h25m10s" }}
+< 5110
+```
+
 ### `pow`
 
 Returns float from calculation: `float1 ** float2`
@@ -480,7 +506,7 @@ Example:
 
 ```
 # Your int this hour: {{ printf "%.0f" (mulf (seededRandom (list "int" .username (now | date "2006-01-02 15") | join ":")) 100) }}%
-< Your int this hour: 23%
+< Your int this hour: 24%
 ```
 
 ### `spotifyCurrentPlaying`

internal/template/date/date.go

@@ -2,6 +2,9 @@
 package date
 
 import (
+	"fmt"
+	"time"
+
 	"github.com/Luzifer/twitch-bot/v3/plugins"
 )
 
@@ -27,5 +30,37 @@ func Register(args plugins.RegistrationArguments) error {
 		},
 	})
 
+	args.RegisterTemplateFunction("parseDuration", plugins.GenericTemplateFunctionGetter(func(duration string) (time.Duration, error) {
+		d, err := time.ParseDuration(duration)
+		if err != nil {
+			return 0, fmt.Errorf("parsing duration: %w", err)
+		}
+
+		return d, nil
+	}), plugins.TemplateFuncDocumentation{
+		Description: `Parses a duration (i.e. 1h25m10s) into a time.Duration`,
+		Syntax:      "parseDuration <duration>",
+		Example: &plugins.TemplateFuncDocumentationExample{
+			Template:       `{{ parseDuration "1h30s" }}`,
+			ExpectedOutput: "1h0m30s",
+		},
+	})
+
+	args.RegisterTemplateFunction("parseDurationToSeconds", plugins.GenericTemplateFunctionGetter(func(duration string) (int64, error) {
+		d, err := time.ParseDuration(duration)
+		if err != nil {
+			return 0, fmt.Errorf("parsing duration: %w", err)
+		}
+
+		return int64(d / time.Second), nil
+	}), plugins.TemplateFuncDocumentation{
+		Description: `Parses a duration (i.e. 1h25m10s) into a number of seconds`,
+		Syntax:      "parseDurationToSeconds <duration>",
+		Example: &plugins.TemplateFuncDocumentationExample{
+			Template:       `{{ parseDurationToSeconds "1h25m10s" }}`,
+			ExpectedOutput: "5110",
+		},
+	})
+
 	return nil
 }