feat(cli): add helper command completions

fastanime/cli/__init__.py

@@ -15,6 +15,7 @@ commands = {
     "config": "config.config",
     "downloads": "downloads.downloads",
     "cache": "cache.cache",
+    "completions": "completions.completions",
 }
 
 

fastanime/cli/commands/completions.py

@@ -0,0 +1,110 @@
+import click
+
+
+@click.command(help="Helper command to get shell completions")
+@click.option("--fish", is_flag=True)
+@click.option("--zsh", is_flag=True)
+@click.option("--bash", is_flag=True)
+def completions(fish, zsh, bash):
+    if fish:
+        print(
+            """
+function _fastanime_completion;
+    set -l response (env _FASTANIME_COMPLETE=fish_complete COMP_WORDS=(commandline -cp) COMP_CWORD=(commandline -t) fastanime);
+
+    for completion in $response;
+        set -l metadata (string split "," $completion);
+
+        if test $metadata[1] = "dir";
+            __fish_complete_directories $metadata[2];
+        else if test $metadata[1] = "file";
+            __fish_complete_path $metadata[2];
+        else if test $metadata[1] = "plain";
+            echo $metadata[2];
+        end;
+    end;
+end;
+
+complete --no-files --command fastanime --arguments "(_fastanime_completion)";
+        """
+        )
+    elif zsh:
+        print(
+            """
+#compdef fastanime
+
+_fastanime_completion() {
+    local -a completions
+    local -a completions_with_descriptions
+    local -a response
+    (( ! $+commands[fastanime] )) && return 1
+
+    response=("${(@f)$(env COMP_WORDS="${words[*]}" COMP_CWORD=$((CURRENT-1)) _FASTANIME_COMPLETE=zsh_complete fastanime)}")
+
+    for type key descr in ${response}; do
+        if [[ "$type" == "plain" ]]; then
+            if [[ "$descr" == "_" ]]; then
+                completions+=("$key")
+            else
+                completions_with_descriptions+=("$key":"$descr")
+            fi
+        elif [[ "$type" == "dir" ]]; then
+            _path_files -/
+        elif [[ "$type" == "file" ]]; then
+            _path_files -f
+        fi
+    done
+
+    if [ -n "$completions_with_descriptions" ]; then
+        _describe -V unsorted completions_with_descriptions -U
+    fi
+
+    if [ -n "$completions" ]; then
+        compadd -U -V unsorted -a completions
+    fi
+}
+
+if [[ $zsh_eval_context[-1] == loadautofunc ]]; then
+    # autoload from fpath, call function directly
+    _fastanime_completion "$@"
+else
+    # eval/source/. command, register function for later
+    compdef _fastanime_completion fastanime
+fi
+        """
+        )
+    elif bash:
+        print(
+            """
+_fastanime_completion() {
+    local IFS=$'\n'
+    local response
+
+    response=$(env COMP_WORDS="${COMP_WORDS[*]}" COMP_CWORD=$COMP_CWORD _FASTANIME_COMPLETE=bash_complete $1)
+
+    for completion in $response; do
+        IFS=',' read type value <<< "$completion"
+
+        if [[ $type == 'dir' ]]; then
+            COMPREPLY=()
+            compopt -o dirnames
+        elif [[ $type == 'file' ]]; then
+            COMPREPLY=()
+            compopt -o default
+        elif [[ $type == 'plain' ]]; then
+            COMPREPLY+=($value)
+        fi
+    done
+
+    return 0
+}
+
+_fastanime_completion_setup() {
+    complete -o nosort -F _fastanime_completion fastanime
+}
+
+_fastanime_completion_setup;
+        """
+        )
+    else:
+        print("Specify either --zsh/--fish/--bash")