integrate sqlite with simple insert and select

Makefile

@@ -2,7 +2,7 @@ CC = gcc
 CFLAGS = -Wall -g -Iinclude
 TARGET = main
 SRC = main.c
-LIBS = -lcurl
+LIBS = -lcurl -lsqlite3
 
 $(TARGET): $(SRC)
 	$(CC) $(CFLAGS) -o $(TARGET) $(SRC) $(LIBS)

main.c

@@ -1,31 +1,88 @@
+#include <sqlite3.h>
 #include <stdio.h>
+#include <string.h>
 
 struct data_t {};
 
 void print_help() {
   printf("Here is the help manual: \n"
          "-c <todo_name> | create a todo\n"
-         "-l | list all todos\n"
+         "-l | list all todos\n");
-         "-d | delete a particular todo\n");
 }
+
+// TODO: use global finalize function for sqlite handle
 int main(int argc, char *argv[]) {
   printf("Hello world \n");
 
-  printf("Received %d arguments\n", argc);
+  sqlite3 *handle;
-
+  int result = sqlite3_open("data.db", &handle);
-  if (argc < 1) {
+  if (result != SQLITE_OK) {
-    print_help();
+    fprintf(stderr, "problem in opening database");
+    return -1;
   }
 
+  sqlite3_stmt *statement;
+  result = sqlite3_prepare(
+      handle, "CREATE TABLE IF NOT EXISTS todos (name TEXT NOT NULL);", 1000,
+      &statement, NULL);
+  if (result != SQLITE_OK) {
+    fprintf(stderr, "problem in preparing sql statement");
+    return -1;
+  }
+
+  printf("Successfully prepared statement\n");
+
+  result = sqlite3_step(statement);
+  if (result != SQLITE_DONE) {
+    fprintf(stderr, "problem in step function");
+    return -1;
+  }
+
+  sqlite3_finalize(statement);
+
+  printf("Received %d arguments\n", argc);
   for (int i = 0; i < argc; i++) {
     printf("Argument: %s\n", argv[i]);
   }
 
-  int read = 0;
+  if (argc <= 1) {
-  char **moving_ptr = argv;
+    print_help();
-  while (read < argc) { // 0 < 2, 0 < 1
-    printf("Argument (ptr loop method): %s\n", *moving_ptr);
-    moving_ptr = moving_ptr + 1;
-    read++;
   }
+
+  char *first_arg = argv[1];
+  if (strcmp(first_arg, "-c") == 0) {
+    printf("Printing argument: %s", first_arg);
+
+    result = sqlite3_prepare(handle, "INSERT INTO todos (name) VALUES (?);", -1,
+                             &statement, NULL);
+    if (result != SQLITE_OK) {
+      fprintf(stderr, "problem in preparing insert statement");
+      return -1;
+    }
+
+    sqlite3_bind_text(statement, 1, argv[2], -1, SQLITE_STATIC);
+
+    result = sqlite3_step(statement);
+    if (result != SQLITE_DONE) {
+      fprintf(stderr, "problem in executing insert statement: %d", result);
+      return -1;
+    }
+
+    sqlite3_finalize(statement);
+  } else if (strcmp(first_arg, "-l") == 0) {
+    result = sqlite3_prepare(handle, "SELECT name FROM todos;", -1, &statement,
+                             NULL);
+    while ((result = sqlite3_step(statement)) == SQLITE_ROW) {
+      const char *name = (const char *)sqlite3_column_text(statement, 0);
+      printf("Todo: %s\n", name);
+    }
+    if (result != SQLITE_DONE) {
+      fprintf(stderr, "problem in executing select statement: %d", result);
+      return -1;
+    }
+
+    sqlite3_finalize(statement);
+  }
+
+  sqlite3_close(handle);
 }