package fr.tiogars.chat.domains.task.controllers;
   
   import java.nio.charset.StandardCharsets;
   import java.util.List;
   
   import org.springframework.http.ContentDisposition;
   import org.springframework.http.HttpHeaders;
   import org.springframework.http.HttpStatus;
   import org.springframework.http.MediaType;
  import org.springframework.http.ResponseEntity;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestBody;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.ResponseStatus;
  import org.springframework.web.bind.annotation.RestController;
  import org.springframework.web.server.ResponseStatusException;
  
  import fr.tiogars.chat.domains.task.models.CreateTaskRequest;
  import fr.tiogars.chat.domains.task.models.Task;
  import fr.tiogars.chat.domains.task.services.TaskCsvCodec;
  import fr.tiogars.chat.domains.task.services.TaskFindAllService;
  import fr.tiogars.chat.domains.task.services.TaskSeedService;
  import io.swagger.v3.oas.annotations.Operation;
  import io.swagger.v3.oas.annotations.responses.ApiResponse;
  import io.swagger.v3.oas.annotations.responses.ApiResponses;
  import io.swagger.v3.oas.annotations.tags.Tag;
  import jakarta.validation.Valid;
  
  /**
   * Exposes JSON and CSV import/export endpoints for Tasks.
   *
   * @since 0.1.0
   */
  @Tag(name = "Tasks", description = "CRUD operations for the Task business object.")
  @RestController
  @RequestMapping("/api/v1/task")
  public class TaskImportExportController {
  
      private final TaskFindAllService findAllService;
      private final TaskSeedService seedService;
      private final TaskCsvCodec csvCodec;
  
      /**
       * Creates the import/export controller.
       *
       * @param findAllService domain record listing service
       * @param seedService    domain record seed service
       * @param csvCodec       CSV codec
       */
      public TaskImportExportController(
              TaskFindAllService findAllService,
              TaskSeedService seedService,
              TaskCsvCodec csvCodec) {
          this.findAllService = findAllService;
          this.seedService = seedService;
          this.csvCodec = csvCodec;
      }
  
      /**
       * Exports records as JSON.
       *
       * @return domain records
       */
      @Operation(summary = "Export domain records as JSON")
      @ApiResponse(responseCode = "200", description = "Domain records were exported.")
      @GetMapping(value = "/export.json", produces = MediaType.APPLICATION_JSON_VALUE)
      public List<Task> exportJsonTask() {
          return findAllService.findAll();
      }
  
      /**
       * Exports records as CSV.
       *
       * @return CSV response
       */
      @Operation(summary = "Export domain records as CSV")
      @ApiResponse(responseCode = "200", description = "Domain records were exported.")
      @GetMapping(value = "/export.csv", produces = "text/csv")
      public ResponseEntity<String> exportCsvTask() {
          String filename = "tasks.csv";
          return ResponseEntity.ok()
                  .contentType(new MediaType("text", "csv", StandardCharsets.UTF_8))
                  .header(HttpHeaders.CONTENT_DISPOSITION,
                          ContentDisposition.attachment().filename(filename).build().toString())
                  .body(csvCodec.serialize(findAllService.findAll()));
      }
  
      /**
       * Imports JSON records.
       *
       * @param records records to import
       * @return stored records
       */
      @Operation(summary = "Import domain records from JSON")
      @ApiResponses(value = {
              @ApiResponse(responseCode = "201", description = "Records were imported."),
              @ApiResponse(responseCode = "400", description = "The import document is invalid.")
      })
     @PostMapping(value = "/import.json", consumes = MediaType.APPLICATION_JSON_VALUE)
     @ResponseStatus(HttpStatus.CREATED)
     public List<Task> importJsonTask(
             @RequestBody List<@Valid CreateTaskRequest> records) {
         return seedService.seed(records);
     }
 
     /**
      * Imports CSV records.
      *
      * @param csv CSV document
      * @return stored records
      */
     @Operation(summary = "Import domain records from CSV")
     @ApiResponses(value = {
             @ApiResponse(responseCode = "201", description = "Records were imported."),
             @ApiResponse(responseCode = "400", description = "The import document is invalid.")
     })
     @PostMapping(value = "/import.csv", consumes = "text/csv")
     @ResponseStatus(HttpStatus.CREATED)
     public List<Task> importCsvTask(@RequestBody String csv) {
         try {
             return seedService.seed(csvCodec.parse(csv));
         } catch (IllegalArgumentException exception) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, exception.getMessage(), exception);
         }
     }
 }