package de.ph87.data.series.graph;

import de.ph87.data.series.*;
import jakarta.servlet.http.*;
import lombok.*;
import lombok.extern.slf4j.*;
import org.springframework.web.bind.annotation.*;

import javax.imageio.*;
import java.awt.image.*;
import java.io.*;
import java.time.*;

@Slf4j
@RestController
@RequiredArgsConstructor
@RequestMapping("Series/Graph")
public class GraphController {

  private final GraphService graphService;

  @GetMapping(path = "{seriesId}/{width}/{height}/{alignmentName}/{offset}/{duration}", produces = "image/png")
  public void graph(@PathVariable final long seriesId, final HttpServletResponse response, @PathVariable final int width, @PathVariable final int height, @PathVariable final String alignmentName, @PathVariable final long offset, @PathVariable final long duration) throws IOException {
    final Alignment alignment = Alignment.valueOf(alignmentName);
    final Aligned end = alignment.align(ZonedDateTime.now()).minus(offset);
    final Aligned begin = end.minus(duration - 1);
    final Graph graph = graphService.getGraph(seriesId, begin, end, width, height, 10);
    final BufferedImage image = graph.draw();
    response.setContentType("image/png");
    ImageIO.write(image, "PNG", response.getOutputStream());
    response.getOutputStream().flush();
  }

}