package roomescape.theme.controller;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.media.Schema;
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.servlet.http.HttpServletResponse;
import jakarta.validation.Valid;
import jakarta.validation.constraints.NotNull;
import roomescape.auth.web.support.Admin;
import roomescape.auth.web.support.LoginRequired;
import roomescape.common.dto.response.RoomescapeApiResponse;
import roomescape.common.dto.response.RoomescapeErrorResponse;
import roomescape.theme.dto.ThemeRequest;
import roomescape.theme.dto.ThemeResponse;
import roomescape.theme.dto.ThemesResponse;
import roomescape.theme.service.ThemeService;

@RestController
@Tag(name = "5. 테마 API", description = "테마를 조회 / 추가 / 삭제할 때 사용합니다.")
public class ThemeController {

	private final ThemeService themeService;

	public ThemeController(ThemeService themeService) {
		this.themeService = themeService;
	}

	@LoginRequired
	@GetMapping("/themes")
	@ResponseStatus(HttpStatus.OK)
	@Operation(summary = "모든 테마 조회", description = "모든 테마를 조회합니다.", tags = "로그인이 필요한 API")
	@ApiResponses({
		@ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true)
	})
	public RoomescapeApiResponse<ThemesResponse> getAllThemes() {
		return RoomescapeApiResponse.success(themeService.findAllThemes());
	}

	@GetMapping("/themes/most-reserved-last-week")
	@ResponseStatus(HttpStatus.OK)
	@Operation(summary = "가장 많이 예약된 테마 조회")
	@ApiResponses({
		@ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true)
	})
	public RoomescapeApiResponse<ThemesResponse> getMostReservedThemes(
		@RequestParam(defaultValue = "10") @Parameter(description = "최대로 조회할 테마 갯수") int count
	) {
		return RoomescapeApiResponse.success(themeService.getMostReservedThemesByCount(count));
	}

	@Admin
	@PostMapping("/themes")
	@ResponseStatus(HttpStatus.CREATED)
	@Operation(summary = "테마 추가", tags = "관리자 로그인이 필요한 API")
	@ApiResponses({
		@ApiResponse(responseCode = "201", description = "성공", useReturnTypeSchema = true),
		@ApiResponse(responseCode = "409", description = "같은 이름의 테마를 추가할 수 없습니다.",
			content = @Content(schema = @Schema(implementation = RoomescapeErrorResponse.class)))
	})
	public RoomescapeApiResponse<ThemeResponse> saveTheme(
		@Valid @RequestBody ThemeRequest request,
		HttpServletResponse response
	) {
		ThemeResponse themeResponse = themeService.addTheme(request);
		response.setHeader(HttpHeaders.LOCATION, "/themes/" + themeResponse.id());

		return RoomescapeApiResponse.success(themeResponse);
	}

	@Admin
	@DeleteMapping("/themes/{id}")
	@ResponseStatus(HttpStatus.NO_CONTENT)
	@Operation(summary = "테마 삭제", tags = "관리자 로그인이 필요한 API")
	@ApiResponses({
		@ApiResponse(responseCode = "204", description = "성공", useReturnTypeSchema = true),
		@ApiResponse(responseCode = "409", description = "예약된 테마는 삭제할 수 없습니다.",
			content = @Content(schema = @Schema(implementation = RoomescapeErrorResponse.class)))
	})
	public RoomescapeApiResponse<Void> removeTheme(
		@NotNull(message = "themeId는 null일 수 없습니다.") @PathVariable Long id
	) {
		themeService.removeThemeById(id);

		return RoomescapeApiResponse.success();
	}
}