Makefile

# Note these compile rules will be invoked by Dockerfile "RUN make" command and they also work on the host machine if microhttpd lib is installed
CC = gcc
CFLAGS = -Wall -g -I/usr/include/postgresql
LIBS = -lmicrohttpd -L/usr/lib/x86_64-linux-gnu -lpq
SRCDIR = src
BINDIR = bin
SOURCES = $(wildcard $(SRCDIR)/*.c)
OBJECTS = $(patsubst $(SRCDIR)/%.c, $(BINDIR)/%.o, $(SOURCES))

all: $(BINDIR)/main

$(BINDIR)/main: $(OBJECTS)
	mkdir -p $(BINDIR)
	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)

$(BINDIR)/%.o: $(SRCDIR)/%.c | $(BINDIR)
	$(CC) $(CFLAGS) -c -o $@ $<

$(BINDIR):
	mkdir -p $@

clean:
	rm -f $(BINDIR)/*.o $(BINDIR)/main

clear: ## clears the terminal output
	printf '\ec';printf '\e[3J';

build: clear
	docker compose build

run: build
	docker compose up -d
	@echo "API running at http://localhost:8888"

stop: clear
	docker compose down

logs: clear
	docker compose logs -f

# --- Database initial migration ---
dbwait: run ## waits until postgres is ready to accept connections
	@. ./.env; \
	echo "Waiting for PostgreSQL to be ready..."; \
	for i in $$(seq 1 30); do \
		docker compose exec -T rest-api-c-db pg_isready -U $$POSTGRES_USER -d postgres >/dev/null 2>&1 && echo "PostgreSQL is ready!" && exit 0; \
		echo "Waiting... ($$i/30)"; \
		sleep 2; \
	done; \
	echo "PostgreSQL did not become ready in time"; \
	exit 1

dbcreate: dbwait ## creates the rest_api_c database if not exists
	docker compose exec -T rest-api-c-db psql -U rest_api_c -d postgres -c "CREATE DATABASE rest_api_c;" 2>/dev/null || true

dbinit: dbcreate ## creates the users table if not exists
	docker compose exec -T rest-api-c-db psql -U rest_api_c -d rest_api_c -c "CREATE TABLE IF NOT EXISTS users (id SERIAL PRIMARY KEY, name VARCHAR(255) NOT NULL, email VARCHAR(255) NOT NULL);"
	@echo "API running at http://localhost:8888"

# --- CRUD tasks for testing ---
healthcheck: clear
	curl -s http://localhost:8888/

listusers: clear
	curl -s http://localhost:8888/users

getuserbyid: clear ## make getuserbyid id=1
	curl -s http://localhost:8888/users/$(id)

createuser: clear ## make createuser name="Test User" email="test.user@mail.com"
	curl -s -X POST http://localhost:8888/users \
		-H "Content-Type: application/json" \
		-d '{"name": "$(name)", "email": "$(email)"}'

updateuser: clear ## make updateuser id=1 name="New Test User" email="new.test.user@mail.com"
	curl -s -X PUT http://localhost:8888/users/$(id) \
		-H "Content-Type: application/json" \
		-d '{"name": "$(name)", "email": "$(email)"}'

deleteuser: clear ## make deleteuser id=1
	curl -s -X DELETE http://localhost:8888/users/$(id)