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412 lines
8.7 KiB
Markdown
412 lines
8.7 KiB
Markdown
## Templating
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Generally speaking the templating uses [Golang `text/template`](https://pkg.go.dev/text/template) template syntax. All fields with templating enabled do support the full synax from the `text/template` package.
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### Variables
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There are certain variables available in the strings with templating enabled:
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- `channel` - Channel the message was sent to, only available for regular messages not events
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- `msg` - The message object, used in functions, should not be sent to chat
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- `permitTimeout` - Value of `permit_timeout` in seconds
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- `username` - The username of the message author
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### Functions
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Within templates following functions can be used:
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- built-in functions in `text/template` engine
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- functions from [sprig](https://masterminds.github.io/sprig/) function collection
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- functions mentioned below
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Examples below are using this syntax in the code block:
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```
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! Message matcher used for the input message
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> Input message if used in the example
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# Template used in the fields
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< Output from the template
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```
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#### `arg`
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Takes the message sent to the channel, splits by space and returns the Nth element
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Syntax: `arg <index>`
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Example:
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```
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> !bsg @tester
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# {{ arg 1 }} please refrain from BSG
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< @tester please refrain from BSG
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```
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#### `botHasBadge`
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Checks whether bot has the given badge in the current channel
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Syntax: `botHasBadge <badge>`
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Example:
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```
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# {{ botHasBadge "moderator" }}
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< true
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```
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#### `channelCounter`
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Wraps the counter name into a channel specific counter name including the channel name
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Syntax: `channelCounter <counter name>`
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Example:
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```
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# {{ channelCounter "test" }}
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< 5
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```
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#### `counterValue`
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Returns the current value of the counter which identifier was supplied
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Syntax: `counterValue <counter name>`
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Example:
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```
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# {{ counterValue (list .channel "test" | join ":") }}
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< 5
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```
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#### `counterValueAdd`
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Adds the given value (or 1 if no value) to the counter and returns its new value
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Syntax: `counterValueAdd <counter name> [increase=1]`
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Example:
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```
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# {{ counterValueAdd "myCounter" }} {{ counterValueAdd "myCounter" 5 }}
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< 1 6
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```
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#### `displayName`
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Returns the display name the specified user set for themselves
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Syntax: `displayName <username> [fallback]`
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Example:
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```
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# {{ displayName "luziferus" }} - {{ displayName "notexistinguser" "foobar" }}
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< Luziferus - foobar
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```
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#### `doesFollow`
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Returns whether `from` follows `to`
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Syntax: `doesFollow <from> <to>`
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Example:
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```
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# {{ doesFollow "tezrian" "luziferus" }}
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< true
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```
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#### `doesFollowLongerThan`
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Returns whether `from` follows `to` for more than `duration`
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Syntax: `doesFollowLongerThan <from> <to> <duration>`
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Example:
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```
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# {{ doesFollowLongerThan "tezrian" "luziferus" "168h" }}
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< true
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```
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#### `fixUsername`
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Ensures the username no longer contains the `@` or `#` prefix
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Syntax: `fixUsername <username>`
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Example:
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```
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# {{ fixUsername .channel }} - {{ fixUsername "@luziferus" }}
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< luziferus - luziferus
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```
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#### `formatDuration`
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Returns a formated duration. Pass empty strings to leave out the specific duration part.
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Syntax: `formatDuration <duration> <hours> <minutes> <seconds>`
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Example:
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```
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# {{ formatDuration (streamUptime .channel) "hours" "minutes" "seconds" }} - {{ formatDuration (streamUptime .channel) "hours" "minutes" "" }}
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< 5 hours, 33 minutes, 12 seconds - 5 hours, 33 minutes
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```
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#### `followAge`
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Looks up when `from` followed `to` and returns the duration between then and now
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Syntax: `followAge <from> <to>`
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Example:
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```
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# {{ followAge "tezrian" "luziferus" }}
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< 15004h14m59.116620989s
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```
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#### `followDate`
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Looks up when `from` followed `to`
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Syntax: `followDate <from> <to>`
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Example:
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```
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# {{ followDate "tezrian" "luziferus" }}
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< 2021-04-10 16:07:07 +0000 UTC
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```
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#### `group`
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Gets matching group specified by index from `match_message` regular expression, when `fallback` is defined, it is used when group has an empty match
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Syntax: `group <idx> [fallback]`
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Example:
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```
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! !command ([0-9]+) ([a-z]+) ([a-z]*)
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> !command 12 test
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# {{ group 2 "oops" }} - {{ group 3 "oops" }}
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< test - oops
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```
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#### `inList`
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Tests whether a string is in a given list of strings (for conditional templates).
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Syntax: `inList "search" "item1" "item2" [...]`
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Example:
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```
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! !command (.*)
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> !command foo
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# {{ inList (group 1) "foo" "bar" }}
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< true
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```
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#### `jsonAPI`
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Fetches remote URL and applies jq-like query to it returning the result as string. (Remote API needs to return status 200 within 5 seconds.)
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Syntax: `jsonAPI "https://example.com/doc.json" ".data.exampleString" ["fallback"]`
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Example:
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```
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! !mycmd
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> !mycmd
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# {{ jsonAPI "https://example.com/doc.json" ".data.exampleString" }}
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< example string
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```
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#### `lastPoll`
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Gets the last (currently running or archived) poll for the given channel (the channel must have given extended permission for poll access!)
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Syntax: `lastPoll <channel>`
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Example:
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```
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# Last Poll: {{ (lastPoll .channel).Title }}
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< Last Poll: Und wie siehts im Template aus?
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```
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See schema of returned object in [`pkg/twitch/polls.go#L13`](https://github.com/Luzifer/twitch-bot/blob/master/pkg/twitch/polls.go#L13)
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#### `lastQuoteIndex`
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Gets the last quote index in the quote database for the current channel
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Syntax: `lastQuoteIndex`
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Example:
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```
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# Last Quote: #{{ lastQuoteIndex }}
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< Last Quote: #32
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```
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#### `mention`
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Strips username and converts into a mention
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Syntax: `mention <username>`
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Example:
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```
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# {{ mention "@user" }} {{ mention "user" }} {{ mention "#user" }}
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< @user @user @user
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```
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#### `pow`
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Returns float from calculation: `float1 ** float2`
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Syntax: `pow <float1> <float2>`
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Example:
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```
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# {{ printf "%.0f" (pow 10 4) }}%
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< 10000
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```
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#### `randomString`
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Randomly picks a string from a list of strings
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Syntax: `randomString "a" [...]`
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Example:
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```
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# {{ randomString "a" "b" "c" "d" }}
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< a
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```
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#### `recentGame`
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Returns the last played game name of the specified user (see shoutout example) or the `fallback` if the game could not be fetched. If no fallback was supplied the message will fail and not be sent.
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Syntax: `recentGame <username> [fallback]`
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Example:
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```
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# {{ recentGame "luziferus" "none" }} - {{ recentGame "thisuserdoesnotexist123" "none" }}
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< Metro Exodus - none
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```
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#### `recentTitle`
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Returns the last stream title of the specified user or the `fallback` if the title could not be fetched. If no fallback was supplied the message will fail and not be sent.
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Syntax: `recentTitle <username> [fallback]`
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Example:
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```
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# {{ recentGame "luziferus" "none" }} - {{ recentGame "thisuserdoesnotexist123" "none" }}
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< Die Oper haben wir überlebt, mal sehen was uns sonst noch alles töten möchte… - none
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```
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#### `seededRandom`
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Returns a float value stable for the given seed
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Syntax: `seededRandom <string-seed>`
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Example:
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```
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# Your int this hour: {{ printf "%.0f" (multiply (seededRandom (list "int" .username (now "2006-01-02 15") | join ":")) 100) }}%
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< Your int this hour: 17%
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```
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#### `streamUptime`
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Returns the duration the stream is online (causes an error if no current stream is found)
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Syntax: `streamUptime <username>`
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Example:
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```
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# {{ formatDuration (streamUptime "luziferus") "hours" "minutes" "" }}
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< 3 hours, 56 minutes
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```
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#### `subCount`
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Returns the number of subscribers (accounts) currently subscribed to the given channel
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Syntax: `subCount <channel>`
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Example:
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```
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# {{ subCount "luziferus" }}
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< 26
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```
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#### `subPoints`
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Returns the number of sub-points currently given through the T1 / T2 / T3 subscriptions to the given channel
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Syntax: `subPoints <channel>`
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Example:
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```
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# {{ subPoints "luziferus" }}
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< 26
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```
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#### `tag`
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Takes the message sent to the channel, returns the value of the tag specified
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Syntax: `tag <tagname>`
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Example:
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```
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# {{ tag "login" }}
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< luziferus
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```
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#### `variable`
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Returns the variable value or default in case it is empty
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Syntax: `variable <name> [default]`
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Example:
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```
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# {{ variable "foo" "fallback" }} - {{ variable "unsetvar" "fallback" }}
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< test - fallback
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```
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### Upgrade from `v2.x` to `v3.x`
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When adding [sprig](https://masterminds.github.io/sprig/) function collection some functions collided and needed replacement. You need to adapt your templates accordingly:
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- Math functions (`add`, `div`, `mod`, `mul`, `multiply`, `sub`) were replaced with their sprig-equivalent and are now working with integers instead of floats. If you need them to continue to work with floats you need to use their [float-variants](https://masterminds.github.io/sprig/mathf.html).
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- `now` does no longer format the current date as a string but return the current date. You need to replace this: `now "2006-01-02"` becomes `now | date "2006-01-02"`.
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- `concat` is now used to concat arrays. To join strings you will need to modify your code: `concat ":" "string1" "string2"` becomes `lists "string1" "string2" | join ":"`.
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- `toLower` / `toUpper` need to be replaced with their sprig equivalent `lower` and `upper`.
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