// 对俯仰角度进行设置
export function setPitchAngle(pitch) {
	let pitchment = Number(pitch) || 0
	let result = ''
	if (pitchment == 0) {
		result = '正前'
	} else if (pitchment > -90 && pitchment < 0) {
		result = '斜下'
	} else if (pitchment == -90) {
		result = '正下'
	} else if (pitchment > 0 && pitchment < 90) {
		result = '斜上'
	} else if (pitchment == 90) {
		result = '正上'
	}
	return result
}

// 对云台偏航角度进行设置
export function setYawAngle(Yaw) {
	let adjustment = Number(Yaw) || 0
	let result = ''
	if (adjustment > 0 && adjustment <= 45) {
		result = '北偏东'
	} else if (adjustment > 45 && adjustment < 90) {
		result = '东偏北'
	} else if (adjustment == 90) {
		result = '正东'
	} else if (adjustment > 90 && adjustment <= 135) {
		result = '东偏南'
	} else if (adjustment > 135 && adjustment < 180) {
		result = '南偏东'
	} else if (adjustment == 180) {
		result = '正南'
	} else if (adjustment < 0 && adjustment >= -45) {
		result = '北偏西'
	} else if (adjustment < -45 && adjustment > -90) {
		result = '西偏北'
	} else if (adjustment == -90) {
		result = '正西'
	} else if (adjustment < -90 && adjustment >= -135) {
		result = '西偏南'
	} else if (adjustment < -135 && adjustment > -180) {
		result = '南偏西'
	} else {
		result = '正北'
	}
	return result
}

// 文件格式后缀获取
export function getFileType(ext) {
	// 获取类型结果
	let result = ''
	// fileName无后缀返回 false
	if (!ext) {
		return -1
	}
	ext = ext.toLocaleLowerCase()
	// 图片格式
	const imglist = ['png', 'jpg', 'jpeg', 'bmp', 'gif']
	// 进行图片匹配
	result = imglist.find(item => item === ext)
	if (result) {
		return 'image'
	}
	// 匹配txt
	const txtlist = ['txt']
	result = txtlist.find(item => item === ext)
	if (result) {
		return 'txt'
	}
	// 匹配 excel
	const excelist = ['xls', 'xlsx']
	result = excelist.find(item => item === ext)
	if (result) {
		return 'excel'
	}
	// 匹配 word
	const wordlist = ['doc', 'docx']
	result = wordlist.find(item => item === ext)
	if (result) {
		return 'word'
	}
	// 匹配 pdf
	const pdflist = ['pdf']
	result = pdflist.find(item => item === ext)
	if (result) {
		return 'pdf'
	}
	// 匹配 ppt
	const pptlist = ['ppt', 'pptx']
	result = pptlist.find(item => item === ext)
	if (result) {
		return 'ppt'
	}
	// 匹配 视频
	const videolist = ['mp4', 'm2v', 'mkv', 'rmvb', 'wmv', 'avi', 'flv', 'mov', 'm4v', 'ogv']
	result = videolist.find(item => item === ext)
	if (result) {
		return 'video'
	}
	// 匹配 音频
	const radiolist = ['mp3', 'wav', 'wmv']
	result = radiolist.find(item => item === ext)
	if (result) {
		return 'radio'
	}
	// 其他 文件类型
	return 'other'
}

// 获取视频首帧
export function getVideoFirstCover(url) {
	return new Promise(resolve => {
		const video = document.createElement('video')
		video.src = url
		video.muted = true
		video.setAttribute('crossorigin', 'anonymous')

		video.addEventListener('loadedmetadata', function () {
			const canvas = document.createElement('canvas')
			canvas.width = video.videoWidth
			canvas.height = video.videoHeight

			const context = canvas.getContext('2d')
			context.drawImage(video, 0, 0, canvas.width, canvas.height)

			// 输出首帧图像
			const firstFrameDataUrl = canvas.toDataURL('image/png')
			resolve(firstFrameDataUrl)
		})
	})
}