/*
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 *           .UB  OOGDM. MK,                                          Copyright (c) 2015-2020.  斯伯坦机器人
 *              ,  XMW  ..
 *                  r                                                                     All rights reserved.
 *
 * ********************************************************************************************************************
 */

package com.persagy.meiku.controller

import com.credibledoc.plantuml.svggenerator.SvgGeneratorService
import io.swagger.v3.oas.annotations.Operation
import io.swagger.v3.oas.annotations.Parameter
import io.swagger.v3.oas.annotations.tags.Tag
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.RestController
import javax.servlet.http.HttpServletResponse

/**
 * UML 接口
 *
 * @author  庞利祥 <sybotan@126.com>
 */
@Tag(name = "Uml", description = "UML 图")
@RestController
@RequestMapping("/uml/")
open class UmlController {
    /**
     * 获得图像
     *
     * @param   plantUml        内容
     * @param   response        http 应答消息体
     */
    @Operation(summary = "UML 的 svg 图")
    @PostMapping(value = ["/svg"])
    fun svg(
            @Parameter(description = "PlantUML 描述")
            @RequestBody plantUml: String,
            response: HttpServletResponse) {
        val svg = SvgGeneratorService.getInstance().generateSvgFromPlantUml(plantUml)
        response.setHeader("Pragma", "no-cache")
        response.setHeader("Cache-Control", "no-cache")
        response.setDateHeader("Expires", 0)
        response.contentType = "image/svg+xml"
        response.outputStream.write(svg.toByteArray())
    }
}