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Add new functions to custom-api widget
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@ -325,13 +325,24 @@ The following helper functions provided by Glance are available:
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- `toFloat(i int) float`: Converts an integer to a float.
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- `toInt(f float) int`: Converts a float to an integer.
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- `toRelativeTime(t time.Time) template.HTMLAttr`: Converts Time to a relative time such as 2h, 1d, etc which dynamically updates. **NOTE:** the value of this function should be used as an attribute in an HTML tag, e.g. `<span {{ toRelativeTime .Time }}></span>`.
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- `parseTime(layout string, s string) time.Time`: Parses a string into time.Time. The layout must be provided in Go's [date format](https://pkg.go.dev/time#pkg-constants). You can alternatively use these values instead of the literal format: "RFC3339", "RFC3339Nano", "DateTime", "DateOnly", "TimeOnly".
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- `parseTime(layout string, s string) time.Time`: Parses a string into time.Time. The layout must be provided in Go's [date format](https://pkg.go.dev/time#pkg-constants). You can alternatively use these values instead of the literal format: "unix", "RFC3339", "RFC3339Nano", "DateTime", "DateOnly".
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- `parseRelativeTime(layout string, s string) time.Time`: A shorthand for `{{ .String "date" | parseTime "rfc3339" | toRelativeTime }}`.
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- `add(a, b float) float`: Adds two numbers.
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- `sub(a, b float) float`: Subtracts two numbers.
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- `mul(a, b float) float`: Multiplies two numbers.
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- `div(a, b float) float`: Divides two numbers.
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- `formatApproxNumber(n int) string`: Formats a number to be more human-readable, e.g. 1000 -> 1k.
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- `formatNumber(n float|int) string`: Formats a number with commas, e.g. 1000 -> 1,000.
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- `trimPrefix(prefix string, str string) string`: Trims the prefix from a string.
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- `trimSuffix(suffix string, str string) string`: Trims the suffix from a string.
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- `trimSpace(str string) string`: Trims whitespace from a string on both ends.
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- `replaceAll(old string, new string, str string) string`: Replaces all occurrences of a string in a string.
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- `findMatch(pattern string, str string) string`: Finds the first match of a regular expression in a string.
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- `findSubmatch(pattern string, str string) string`: Finds the first submatch of a regular expression in a string.
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- `sortByString(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a string key in either ascending or descending order.
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- `sortByInt(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by an integer key in either ascending or descending order.
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- `sortByFloat(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a float key in either ascending or descending order.
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- `sortByTime(key string, layout string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a time key in either ascending or descending order. The format must be provided in Go's [date format](https://pkg.go.dev/time#pkg-constants).
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The following helper functions provided by Go's `text/template` are available:
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@ -11,6 +11,9 @@ import (
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"log/slog"
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"math"
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"net/http"
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"regexp"
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"sort"
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"strconv"
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"strings"
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"sync"
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"time"
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@ -340,6 +343,22 @@ func (r *decoratedGJSONResult) Bool(key string) bool {
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}
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var customAPITemplateFuncs = func() template.FuncMap {
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var regexpCacheMu sync.Mutex
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var regexpCache = make(map[string]*regexp.Regexp)
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getCachedRegexp := func(pattern string) *regexp.Regexp {
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regexpCacheMu.Lock()
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defer regexpCacheMu.Unlock()
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regex, exists := regexpCache[pattern]
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if !exists {
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regex = regexp.MustCompile(pattern)
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regexpCache[pattern] = regex
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}
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return regex
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}
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funcs := template.FuncMap{
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"toFloat": func(a int) float64 {
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return float64(a)
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@ -369,6 +388,83 @@ var customAPITemplateFuncs = func() template.FuncMap {
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// Shorthand to do both of the above with a single function call
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return dynamicRelativeTimeAttrs(customAPIFuncParseTime(layout, value))
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},
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// The reason we flip the parameter order is so that you can chain multiple calls together like this:
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// {{ .JSON.String "foo" | trimPrefix "bar" | doSomethingElse }}
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// instead of doing this:
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// {{ trimPrefix (.JSON.String "foo") "bar" | doSomethingElse }}
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// since the piped value gets passed as the last argument to the function.
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"trimPrefix": func(prefix, s string) string {
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return strings.TrimPrefix(s, prefix)
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},
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"trimSuffix": func(suffix, s string) string {
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return strings.TrimSuffix(s, suffix)
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},
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"trimSpace": strings.TrimSpace,
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"replaceAll": func(old, new, s string) string {
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return strings.ReplaceAll(s, old, new)
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},
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"findMatch": func(pattern, s string) string {
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if s == "" {
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return ""
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}
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return getCachedRegexp(pattern).FindString(s)
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},
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"findSubmatch": func(pattern, s string) string {
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if s == "" {
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return ""
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}
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regex := getCachedRegexp(pattern)
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return itemAtIndexOrDefault(regex.FindStringSubmatch(s), 1, "")
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},
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"sortByString": func(key, order string, results []decoratedGJSONResult) []decoratedGJSONResult {
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sort.Slice(results, func(a, b int) bool {
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if order == "asc" {
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return results[a].String(key) < results[b].String(key)
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}
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return results[a].String(key) > results[b].String(key)
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})
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return results
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},
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"sortByInt": func(key, order string, results []decoratedGJSONResult) []decoratedGJSONResult {
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sort.Slice(results, func(a, b int) bool {
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if order == "asc" {
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return results[a].Int(key) < results[b].Int(key)
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}
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return results[a].Int(key) > results[b].Int(key)
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})
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return results
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},
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"sortByFloat": func(key, order string, results []decoratedGJSONResult) []decoratedGJSONResult {
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sort.Slice(results, func(a, b int) bool {
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if order == "asc" {
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return results[a].Float(key) < results[b].Float(key)
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}
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return results[a].Float(key) > results[b].Float(key)
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})
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return results
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},
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"sortByTime": func(key, layout, order string, results []decoratedGJSONResult) []decoratedGJSONResult {
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sort.Slice(results, func(a, b int) bool {
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timeA := customAPIFuncParseTime(layout, results[a].String(key))
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timeB := customAPIFuncParseTime(layout, results[b].String(key))
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if order == "asc" {
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return timeA.Before(timeB)
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}
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return timeA.After(timeB)
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})
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return results
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},
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}
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for key, value := range globalTemplateFunctions {
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@ -382,6 +478,13 @@ var customAPITemplateFuncs = func() template.FuncMap {
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func customAPIFuncParseTime(layout, value string) time.Time {
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switch strings.ToLower(layout) {
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case "unix":
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asInt, err := strconv.ParseInt(value, 10, 64)
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if err != nil {
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return time.Unix(0, 0)
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}
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return time.Unix(asInt, 0)
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case "rfc3339":
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layout = time.RFC3339
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case "rfc3339nano":
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@ -390,8 +493,6 @@ func customAPIFuncParseTime(layout, value string) time.Time {
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layout = time.DateTime
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case "dateonly":
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layout = time.DateOnly
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case "timeonly":
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layout = time.TimeOnly
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}
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parsed, err := time.Parse(layout, value)
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