add caching to commands

lib/lrclib.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+# many functions are invoked via variables
+# shellcheck disable=SC2329
+
+get_lrclib_api_response() {
+    local isrc="$1"
+    local deezerResponse=''
+    deezerResponse="$(get_deezer_isrc_response "${isrc}")" || return 1
+
+    # get metadata from deezer
+    local deezerMetadata=(
+        "track .title"
+        "artist .artist.name"
+        "album .album.title"
+        "duration .duration"
+    )
+    for data in "${deezerMetadata[@]}"; do
+        IFS=' ' read -r env jqFilter <<<"${data}"
+        jqResult="$(jq -r "${jqFilter}" <<<"${deezerResponse}")"
+        if ! jq_result_valid "${jqResult}"; then
+            error "could not determine lrclib ${env} for ${isrc}"
+            return 1
+        fi
+        declare "${env}=${jqResult}"
+        debug "${env}=${jqResult}"
+    done
+
+    # variables assigned above
+    # shellcheck disable=SC2154
+    cache_command \
+        curl \
+        "https://lrclib.net/api/get" \
+        --silent \
+        --get \
+        --data-urlencode "track_name=${track}" \
+        --data-urlencode "artist_name=${artist}" \
+        --data-urlencode "album_name=${album}" \
+        --data-urlencode "duration=${duration}"
+}
+
+download_with_lrclib() {
+    local isrc="$1"
+    local output="$2"
+
+    # get lrclib ID
+    local lrclibResponse syncedLyrics
+    lrclibResponse="$(get_lrclib_api_response "${isrc}")"
+    syncedLyrics="$(jq -r .syncedLyrics <<<"${lrclibResponse}")"
+    if ! jq_result_valid "${syncedLyrics}"; then
+        error "could not get lyrics for ${isrc}"
+        return 1
+    fi
+
+    echo "${syncedLyrics}" >"${output}"
+}