feat: add fzf-based file/plugin/port selection and update build system

client/makefile

@@ -1,5 +1,5 @@
 CC = gcc
-CFLAGS = -Wall -Wextra -Wpedantic -std=c11 -Isrc
+CFLAGS = -Wall -Wextra -Wpedantic -std=gnu11 -Isrc -I../engine/src
 CARLA_INC = -I/usr/include/carla -I/usr/include/carla/includes
 CARLA_LIB = -L/usr/lib/carla -Wl,-rpath,/usr/lib/carla -lcarla_standalone2
 
@@ -22,20 +22,20 @@ all: looper-client test_status_parse
 looper-client: src/main.c src/tui.c $(PLUGINS_OBJ) $(CARLA_OBJ) $(CLIENT_CMD_OBJ) $(SCRIPT_OBJ) $(LOG_OBJ)
 	$(CC) $(CFLAGS) $(CARLA_INC) -o $@ $^ $(CARLA_LIB) -ljack -lncurses
 
-test_status_parse: tests/test_status_parse.c $(PLUGINS_OBJ) $(CARLA_OBJ) $(CLIENT_CMD_OBJ)
+test_status_parse: tests/test_status_parse.c $(PLUGINS_OBJ) $(CARLA_OBJ) $(CLIENT_CMD_OBJ) $(SCRIPT_OBJ) $(LOG_OBJ)
-	$(CC) $(CFLAGS) $(CARLA_INC) -o test_status_parse tests/test_status_parse.c src/tui.c $(PLUGINS_OBJ) $(CARLA_OBJ) $(CLIENT_CMD_OBJ) $(CARLA_LIB) -ljack -lncurses
+	$(CC) $(CFLAGS) $(CARLA_INC) -o test_status_parse tests/test_status_parse.c src/tui.c $(PLUGINS_OBJ) $(CARLA_OBJ) $(CLIENT_CMD_OBJ) $(SCRIPT_OBJ) $(LOG_OBJ) $(CARLA_LIB) -ljack -lncurses
 
 # --- Plugin stubs (now real) ---
 $(PLUGINS_OBJ): src/plugins.c src/plugins.h
 	$(CC) $(CFLAGS) $(CARLA_INC) -c -o $@ $<
 
 $(CARLA_OBJ): src/carla_host.c src/carla_host.h
-	$(CC) -Wall -Wextra -std=c11 -Isrc $(CARLA_INC) -c -o $@ $<
+	$(CC) -Wall -Wextra -std=gnu11 -Isrc -I../engine/src $(CARLA_INC) -c -o $@ $<
 
 CARLA_TEST_OBJ = src/carla_host_test.o
 
 $(CARLA_TEST_OBJ): src/carla_host.c src/carla_host.h
-	$(CC) -Wall -Wextra -std=c11 -Isrc $(CARLA_INC) -DTESTING -c -o $@ $<
+	$(CC) -Wall -Wextra -std=gnu11 -Isrc -I../engine/src $(CARLA_INC) -DTESTING -c -o $@ $<
 
 $(CLIENT_CMD_OBJ): src/client_cmd.c src/client_cmd.h
 	$(CC) $(CFLAGS) $(CARLA_INC) -c -o $@ $<
@@ -51,8 +51,17 @@ TEST_SCRIPT_OBJ = tests/test_script.o
 $(TEST_SCRIPT_OBJ): tests/test_script.c src/script.h
 	$(CC) $(CFLAGS) -c -o $@ $<
 
-$(TEST_SCRIPT_BIN): $(TEST_SCRIPT_OBJ) $(SCRIPT_OBJ)
+TEST_TUI_STUB_OBJ = tests/test_tui_stub.o
-	$(CC) $(CFLAGS) -o $@ $^
+
+tests/test_tui_stub.c:
+	mkdir -p tests
+	@printf '%s\n' '#include "tui.h"' '' 'char *tui_fzf_select(const char *const items[], size_t count, const char *prompt){(void)items;(void)count;(void)prompt;return NULL;}' '' 'void tui_cleanup(void){}' > $@
+
+$(TEST_TUI_STUB_OBJ): tests/test_tui_stub.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(TEST_SCRIPT_BIN): $(TEST_SCRIPT_OBJ) $(SCRIPT_OBJ) $(PLUGINS_OBJ) $(CLIENT_CMD_OBJ) $(CARLA_OBJ) $(TEST_TUI_STUB_OBJ)
+	$(CC) $(CFLAGS) $(CARLA_INC) -o $@ $^ $(CARLA_LIB) -ljack -lncurses
 
 $(LOG_OBJ): src/log.c
 	$(CC) $(CFLAGS) -c -o $@ $<
@@ -101,7 +110,7 @@ TEST_CARLA_MOCK_BIN = test_carla_host_mock
 CARLA_MOCK_OBJ = src/carla_host_mock.o
 
 $(CARLA_MOCK_OBJ): src/carla_host.c src/carla_host.h
-	$(CC) -Wall -Wextra -std=c11 -Isrc $(CARLA_INC) -DTESTING -DMOCK_JACK -c -o $@ $<
+	$(CC) -Wall -Wextra -std=gnu11 -Isrc -I../engine/src $(CARLA_INC) -DTESTING -DMOCK_JACK -c -o $@ $<
 
 $(TEST_CARLA_MOCK_BIN): tests/test_carla_host_mock.c $(CARLA_MOCK_OBJ)
 	$(CC) $(CFLAGS) $(CARLA_INC) -DTESTING -DMOCK_JACK -o $@ $^ $(CARLA_LIB) -ljack

client/src/carla_host.c

@@ -1,3 +1,5 @@
+#define _GNU_SOURCE
+#include <stdlib.h>
 #include <CarlaHost.h>
 #include <CarlaBackend.h>
 #include <string.h>
@@ -206,6 +208,48 @@ int carla_disconnect_plugin(int id) {
     return any ? 0 : -1;  // return -1 if no connections were found (harmless)
 }
 
+#ifdef MOCK_JACK
+/* Mock: return a few fake port names */
+int carla_get_ports(const char *type, char ***ports, int *count) {
+    (void)type;
+    static const char *fake[] = {"system:capture_1", "system:capture_2", "system:playback_1", "system:playback_2"};
+    *count = 4;
+    *ports = malloc(*count * sizeof(char*));
+    if (!*ports) { *count = 0; return -1; }
+    for (int i = 0; i < *count; i++)
+        (*ports)[i] = strdup(fake[i]);
+    return 0;
+}
+#else
+#include <jack/jack.h>
+int carla_get_ports(const char *type, char ***ports, int *count) {
+    (void)type;
+    if (!jack_client) {
+        *ports = NULL;
+        *count = 0;
+        return -1;
+    }
+    const char **jports = jack_get_ports(jack_client, NULL, NULL, 0);
+    if (!jports) {
+        *ports = NULL;
+        *count = 0;
+        return -1;
+    }
+    int n = 0;
+    while (jports[n]) n++;
+    *count = n;
+    *ports = malloc(n * sizeof(char*));
+    if (!*ports) {
+        jack_free(jports);
+        return -1;
+    }
+    for (int i = 0; i < n; i++)
+        (*ports)[i] = strdup(jports[i]);
+    jack_free(jports);
+    return 0;
+}
+#endif
+
 #ifdef TESTING
 int carla_test_connection_count(void) {
     return conn_count;

client/src/log.c

@@ -1 +1 @@
-#include "../engine/src/log.c"
+#include "../../engine/src/log.c"

client/src/script.c

@@ -4,10 +4,16 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+/* Forward declarations for functions used from carla_host.c */
+int carla_load(const char *binary, const char *plugin_id, int *out_id);
+int carla_get_ports(const char *type, char ***ports, int *count);
+#include "tui.h"
+#include <glob.h>
 
 #define MAX_NOTES 128
 
 static char *note_actions[MAX_NOTES] = {0};
+char g_selected_port[256] = {0};
 
 int script_load(const char *path) {
     FILE *fp = fopen(path, "r");
@@ -45,6 +51,100 @@ int script_load(const char *path) {
     return 0;
 }
 
+int script_handle_fzf_command(const char *type) {
+    if (!type) return -1;
+
+    if (strcmp(type, "sample") == 0) {
+        // Get sample directory from env or home
+        const char *dir = getenv("LOOPER_SAMPLE_DIR");
+        if (!dir) dir = getenv("HOME");
+        if (!dir) dir = ".";
+        char pattern[1024];
+        snprintf(pattern, sizeof(pattern), "%s/**/*.wav", dir);
+        glob_t g;
+        if (glob(pattern, GLOB_TILDE, NULL, &g) != 0) {
+            // Try without wildcard
+            snprintf(pattern, sizeof(pattern), "%s/*.wav", dir);
+            if (glob(pattern, GLOB_TILDE, NULL, &g) != 0)
+                return -1;
+        }
+        const char **items = malloc((g.gl_pathc + 1) * sizeof(char*));
+        if (!items) { globfree(&g); return -1; }
+        for (size_t i = 0; i < g.gl_pathc; i++)
+            items[i] = g.gl_pathv[i];
+        items[g.gl_pathc] = NULL;
+
+        char *selected = tui_fzf_select(items, g.gl_pathc, "Load sample: ");
+        if (selected) {
+            int out_id;
+            carla_load(selected, "", &out_id);
+            free(selected);
+        }
+        free(items);
+        globfree(&g);
+        return 0;
+    }
+
+    if (strcmp(type, "plugin") == 0) {
+        // List .so files in common paths
+        const char *dirs[] = {
+            getenv("VST_PATH") ? getenv("VST_PATH") : "/usr/lib/vst",
+            getenv("HOME"),
+            NULL
+        };
+        char **paths = NULL;
+        size_t count = 0;
+        for (int d = 0; dirs[d]; d++) {
+            char pattern[1024];
+            snprintf(pattern, sizeof(pattern), "%s/**/*.so", dirs[d]);
+            glob_t g;
+            if (glob(pattern, GLOB_TILDE, NULL, &g) == 0) {
+                for (size_t i = 0; i < g.gl_pathc; i++) {
+                    paths = realloc(paths, (count+1) * sizeof(char*));
+                    paths[count] = strdup(g.gl_pathv[i]);
+                    count++;
+                }
+                globfree(&g);
+            }
+        }
+        if (count == 0) return -1;
+        const char **items = malloc(count * sizeof(char*));
+        for (size_t i = 0; i < count; i++) items[i] = paths[i];
+
+        char *selected = tui_fzf_select(items, count, "Load plugin: ");
+        if (selected) {
+            int out_id;
+            carla_load(selected, "", &out_id);
+            free(selected);
+        }
+        for (size_t i = 0; i < count; i++) free(paths[i]);
+        free(paths);
+        free(items);
+        return 0;
+    }
+
+    if (strcmp(type, "from") == 0 || strcmp(type, "to") == 0) {
+        char **ports;
+        int count;
+        // For "to" we need input ports (where output will go), for "from" we need output ports
+        if (carla_get_ports("audio", &ports, &count) != 0)
+            return -1;
+
+        char *selected = tui_fzf_select((const char**)ports, count,
+                                        (strcmp(type,"to")==0) ? "Select plugin input port: " : "Select looper output port: ");
+        if (selected) {
+            strncpy(g_selected_port, selected, sizeof(g_selected_port)-1);
+            g_selected_port[sizeof(g_selected_port)-1] = '\0';
+            free(selected);
+        }
+        for (int i = 0; i < count; i++) free(ports[i]);
+        free(ports);
+        return (selected ? 0 : -1);
+    }
+
+    return -1;
+}
+
 void script_cleanup(void) {
     for (int i = 0; i < MAX_NOTES; i++) {
         free(note_actions[i]);

client/src/script.h

@@ -4,5 +4,7 @@
 int script_load(const char *path);
 void script_handle_note(int note);
 void script_cleanup(void);
+int script_handle_fzf_command(const char *type);
+extern char g_selected_port[256];
 
 #endif

client/src/tui.c

@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <unistd.h>
+#include <sys/wait.h>
 #include <fcntl.h>
 #include <ctype.h>
 #include <dirent.h>
@@ -350,6 +351,18 @@ void tui_run(void) {
             rack_mode = !rack_mode;
             rack_selected = 0;
             break;
+        case KEY_F(5):
+            script_handle_fzf_command("sample");
+            draw_grid();
+            break;
+        case KEY_F(6):
+            script_handle_fzf_command("plugin");
+            draw_grid();
+            break;
+        case KEY_F(7):
+            script_handle_fzf_command("from");
+            draw_grid();
+            break;
         case 27: case 'Q':
             if (rack_mode) {
                 rack_mode = false;
@@ -396,6 +409,69 @@ void tui_run(void) {
     }
 }
 
+char* tui_fzf_select(const char *const items[], size_t count, const char *prompt) {
+    if (!items || count == 0) return NULL;
+
+    // Save ncurses state
+    def_prog_mode();
+    endwin();
+
+    // Build a temporary file with the items list
+    char tmpfile[] = "/tmp/tui_fzf_XXXXXX";
+    int fd = mkstemp(tmpfile);
+    if (fd == -1) {
+        reset_prog_mode();
+        refresh();
+        return NULL;
+    }
+    FILE *tmp = fdopen(fd, "w");
+    if (!tmp) {
+        close(fd);
+        unlink(tmpfile);
+        reset_prog_mode();
+        refresh();
+        return NULL;
+    }
+    for (size_t i = 0; i < count; i++) {
+        if (items[i])
+            fprintf(tmp, "%s\n", items[i]);
+    }
+    fclose(tmp);
+
+    // Build fzf command reading from the temporary file
+    char cmd[8192];
+    snprintf(cmd, sizeof(cmd),
+             "fzf --prompt='%s' < %s",
+             prompt ? prompt : "Select: ",
+             tmpfile);
+
+    FILE *result = popen(cmd, "r");
+    if (!result) {
+        unlink(tmpfile);
+        reset_prog_mode();
+        refresh();
+        return NULL;
+    }
+
+    char selected[4096] = {0};
+    if (fgets(selected, sizeof(selected), result) != NULL) {
+        size_t len = strlen(selected);
+        if (len > 0 && selected[len-1] == '\n')
+            selected[len-1] = '\0';
+    }
+    pclose(result);
+    unlink(tmpfile);
+
+    // Restore ncurses
+    reset_prog_mode();
+    refresh();
+
+    if (selected[0] == '\0')
+        return NULL;
+
+    return strdup(selected);
+}
+
 void tui_cleanup(void) {
     if (yank_buffer.clip_indices) free(yank_buffer.clip_indices);
     /* free script note allocations */

client/src/tui.h

@@ -1,9 +1,12 @@
 #ifndef TUI_H
 #define TUI_H
 
+#include <stddef.h>
+
 void tui_init(void);
 void tui_run(void);
 void tui_cleanup(void);
 int send_command(const char *cmd);
+char* tui_fzf_select(const char *const items[], size_t count, const char *prompt);
 
 #endif

client/tests/test_tui_stub.c

@@ -0,0 +1,5 @@
+#include "tui.h"
+
+char *tui_fzf_select(const char *const items[], size_t count, const char *prompt){(void)items;(void)count;(void)prompt;return NULL;}
+
+void tui_cleanup(void){}

orchestrator.c

@@ -1,3 +1,4 @@
+#define _POSIX_C_SOURCE 199309L
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>

tests/test_tui_stub.c

@@ -0,0 +1,32 @@
+/* Stub for tui functions used by script.c in test builds */
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include "tui.h"
+
+char *tui_fzf_select(const char *const items[], size_t count, const char *prompt) {
+    (void)items;
+    (void)count;
+    (void)prompt;
+    return NULL;
+}
+
+void tui_cleanup(void) {
+    /* no operation */
+}
+/* Stub for tui functions used by script.c in test builds */
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include "tui.h"
+
+char *tui_fzf_select(const char *const items[], size_t count, const char *prompt) {
+    (void)items;
+    (void)count;
+    (void)prompt;
+    return NULL;
+}
+
+void tui_cleanup(void) {
+    /* no operation */
+}