Rework script and add new subcommands

pleroma

@@ -2,8 +2,6 @@
 
 set -e
 
-flags=""
-
 print_help() {
     echo "
 Pleroma Maintenance Script
@@ -12,28 +10,54 @@ Usage:
     $0 [action]
 
 Actions:
-    build          Rebuild the pleroma container
+    build                     Rebuild the pleroma container
 
-    start / up     Start pleroma and sibling services
+    start / up                Start pleroma and sibling services
 
-    stop / down    Stop pleroma and sibling services
+    stop / down               Stop pleroma and sibling services
 
-    restart        Executes #stop and #start respectively.
+    restart                   Executes #stop and #start respectively.
 
-    status / ps    Show the current container status
+    status / ps               Show the current container status
 
-    logs           Show the current container logs
+    logs                      Show the current container logs
 
-    enter          Enter the pleroma container for debugging/maintenance
+    enter                     Enter the pleroma container for debugging/maintenance
+
+    mix [task] [args...]      Run a mix task without entering the container
+
+    dump                      Dump the generated docker-compose.yml to stdout
+
+Environment:
+    DEBUG can be used to modify the loglevel.
+        DEBUG=1 prints all commands before they are executed.
+        DEBUG=2 prints all bash statements before they are executed (a lot).
+
+    SHOPT can be used to modify shell options.
+        Pass a list of options to this variable like SHOPT='-x -e'.
+        -e is always on unless you set it to +e.
+
+        For setting long options with -o use a colon (:) instead of a space
+        to seperate the option from -o. For example: SHOPT='-x -e -o:pipefail'
+
+Contributing:
+    You can report bugs or contribute to this project at:
+        https://glitch.sh/sn0w/pleroma-docker
 "
 }
 
+flags=""
+
 render_template() {
     m4 $flags docker-compose.m4 | awk 'NF'
 }
 
 docker_compose() {
-    render_template | docker-compose -f - "$@"
+    docker-compose \
+        -f <(render_template) \
+        --project-directory . \
+        --project-name "${PLEROMA_NAME:-pleroma}" \
+        "$@"
 }
 
 load_env() {
@@ -53,29 +77,66 @@ load_env() {
     done < .env
 }
 
-action__start()   { docker_compose up --remove-orphans -d; }
-action__up()      { action__start; }
-action__stop()    { docker_compose down; }
-action__down()    { action__stop; }
-action__restart() { action__stop; action__start; }
-action__logs()    { docker_compose logs -f; }
 action__build()   { docker_compose build --build-arg __BUST_CACHE="$(date +%s)" server; }
-action__enter()   { docker_compose exec server ash; }
-action__status()  { docker_compose ps; }
-action__ps()      { action__status; }
 action__debug()   { render_template; }
+action__down()    { action__stop; }
+action__enter()   { docker_compose exec server ash; }
 action__lint()    { render_template | jq; }
+action__logs()    { docker_compose logs -f; }
+action__mix()     { docker_compose exec server ash -c "cd /pleroma && mix $*"; }
+action__ps()      { action__status; }
+action__restart() { action__stop; action__start; }
+action__start()   { docker_compose up --remove-orphans -d; }
+action__status()  { docker_compose ps; }
+action__stop()    { docker_compose down; }
+action__up()      { action__start; }
 
+action__dump() {
+    if command -v jq 2>&1 1>/dev/null; then
+        cat <(render_template) | jq
+    else
+        cat <(render_template)
+    fi
+}
+
+# Check if there is any command at all
 if [[ -z "$1" ]]; then
     print_help
     exit 1
 fi
 
+# Check for SHOPTs
+if [[ ! -z "$SHOPT" ]]; then
+    for opt in $SHOPT; do
+        if [[ $opt =~ ":" ]]; then
+            set -o ${opt//-o:/}
+        else
+            set $opt
+        fi
+    done
+fi
+
+# Check for DEBUG
+if [[ ! -z "$DEBUG" ]]; then
+    if [[ $DEBUG == 1 ]]; then
+        export DEBUG_COMMANDS=1
+    elif [[ $DEBUG == 2 ]]; then
+        set -x
+    fi
+fi
+
+# Parse .env
 load_env
 
-actions=(build update purge start up stop down restart logs enter status ps debug lint)
-if [[ ${actions[*]} =~ ${1} ]]; then
-    "action__${1}"
+# Guess function name of current command
+# and then check for it's existance.
+func="action__${1}"
+
+if type -t $func 2>&1 1>/dev/null; then
+    shift
+    [[ $DEBUG != 1 ]] || set -x
+    $func $@
+    { [[ $DEBUG != 1 ]] || set +x; } 2>/dev/null
 else
     print_help
     exit 1