info-healthchecks.io: add script

Author: libklein

polybar-scripts/info-healthchecks.io/README.md

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+# Script: info-healthchecks.io
+
+Shows the health of your services registered with [healthchecks.io](https://healthchecks.io).
+
+![screenshot](screenshots/info-healthchecks.io.png)
+
+
+## Dependencies
+
+* `jq`
+* `curl`
+
+## Configuration
+
+Modify any of the all-caps variables to configure the script:
+* `API_KEY`: Your [healthchecks.io](https://healthchecks.io) API key. These are project specific and can be generated on the project settings page.
+* `CHECK_ENDPOINT`: URL of the checks API endpoint. Change if self-hosting.
+* `STATES`: Array of states to monitor. Available options: `"up" "down" "new" "pending" "grace" "started" "paused"`
+* `COLORS`: Associative array that maps a color to each configured state. Defaults to white (#ffffff).
+* `SHOWN_TAGS`: Array of tags to show. Leave empty to disable filtering based on tags.
+
+## Module
+
+```ini
+[module/info-healthchecks.io]
+type = custom/script
+exec = ~/polybar-scripts/info-healthchecks.io.sh
+interval = 30
+```

polybar-scripts/info-healthchecks.io/info-healthchecks.io.sh

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+#!/bin/bash
+
+# Your API Key
+API_KEY=""
+# URL of the checks api endpoint. Change if self-hosting the service.
+CHECK_ENDPOINT="https://healthchecks.io/api/v1/checks/"
+
+# States to track
+# Available options: up down new pending grace started paused
+STATES=("up" "down")
+# Color of each state. Defaults to white (#ffffff).
+declare -A COLORS=( [up]="#7cfc00" [down]="#ff0000" )
+# Leave empty to show all tags
+SHOWN_TAGS=()
+
+function build_url {
+    url=$CHECK_ENDPOINT
+    next_sep="?"
+    for tag in "${SHOWN_TAGS[@]}"; do
+        url+="${next_sep}tag=${tag}"
+        next_sep="&"
+    done
+    echo "$url"
+}
+
+response=$(curl --silent --header "X-Api-Key: ${API_KEY}" "$(build_url)")
+
+declare -A stati
+
+for status in "up" "down"; do
+    stati[$status]=0
+done
+
+for status in $(echo "$response" | jq -r '.checks[].status'); do
+    stati[$status]=$((stati[$status] + 1))
+done
+
+output=""
+for status in "${STATES[@]}"; do
+    count=${stati[$status]}
+    if [ ${COLORS[$status]+_} ]; then
+        color=${COLORS[$status]}
+    else
+        color="#ffffff"
+    fi
+    output+="|%{F${color}}${count}%{F-}"
+done
+
+echo ${output:1}