import { request, type ApiResponse } from './request'
export interface SpliceSelection { testId: number; testBatteryId: number }
export interface SpliceCandidate { selection: SpliceSelection; name: string; type: string; groupId: number; group: string; batteryNo: string; startedAt: number }
export interface SpliceField { name: string; category: 'battery' | 'special'; displayName: string; unit: string; fieldDefinitionId?: number | null }
export interface SpliceBusinessField { fieldDefinitionId: number; fieldName: string; fieldValue: string | null }
export interface SpliceSegment { source: SpliceCandidate; offset: number; originalCycleNos: number[]; statistics: Record<string, Record<string, number | null>>; businessFields?: SpliceBusinessField[]; consoleDetail?: { experimentName?: string; batteryFields: string[]; specialFields: string[]; fieldValues: Record<string, string> } }
export interface SpliceMatrix { segments: SpliceSegment[]; cycleNos: number[] }
export interface SpliceSettings { sourceDetailOverrides?: Record<string, { experimentName?: string; fieldValues?: Record<string, string> }>; sourceExperimentNames?: Record<string,string>; hiddenSeries?: boolean; fieldStructure?: SpliceField[]; statisticValues?: Record<string, string>; batteryFields?: string[]; specialFields?: string[]; detailFieldValues?: Record<string, Record<string, string>>; metrics?: string[]; seriesColors?: string[] }
export interface SpliceSummary { id: number; name: string; creator: string; createdAt: number }
export interface SavedSpliceReport extends SpliceSummary { spliceMode?: 'battery-segments'; description?: string; selections: SpliceSelection[]; segments: SpliceSegment[]; cycleNos: number[]; settings: SpliceSettings; versionNo: number; operatorName: string; versionCreatedAt: number; changeSummary: string }
const root='/system/splice-report'
async function data<T>(path:string, method='GET', body?:unknown){return (await request<ApiResponse & {data:T}>(`${root}${path}`,{method,...(body===undefined?{}:{body:JSON.stringify(body)})})).data}
export function listSpliceReports(){return request<ApiResponse & {rows:SpliceSummary[]}>(`${root}/list`).then(r=>r.rows)}
export function getSpliceSources(){return data<SpliceCandidate[]>('/sources')}
export function previewSpliceReport(s:SpliceSelection[]){return data<SpliceMatrix>('/preview','POST',s)}
export function createSpliceReport(body:Record<string, unknown>){return data<SavedSpliceReport>('','POST',body)}
export function getSpliceReport(id:number, editing=false){return data<SavedSpliceReport>(`/${id}${editing?'/editing':''}`)}
export function getSpliceVersion(id:number,versionNo:number){return data<SavedSpliceReport>(`/${id}/versions/${versionNo}`)}
export function getSplicePrintVersion(id:number,versionNo:number){return data<SavedSpliceReport>(`/${id}/versions/${versionNo}/print`)}
export function editSpliceReport(id:number,body:Record<string, unknown>){return data<SavedSpliceReport>(`/${id}/versions`,'POST',body)}
export function deleteSpliceReport(id:number){return data<void>(`/${id}`,'DELETE')}
export function listSpliceVersions(id:number){return data<Array<{versionNo:number;operatorName:string;createdAt:number;changeSummary:string}>>(`/${id}/versions`)}
export function refreshSpliceSource(id:number,baseVersionNo:number,changeSummary:string){return data<SavedSpliceReport>(`/${id}/refresh-source`,'POST',{baseVersionNo,changeSummary})}
export interface SpliceTemplate { id: number; name: string; type: string; fields: SpliceField[]; creator: string; updatedAt: number }
export function listSpliceTemplates(){return data<SpliceTemplate[]>('/templates')}
export function createSpliceTemplate(name:string,fields:SpliceField[]){return data<number>('/templates','POST',{name,fields})}
export function updateSpliceTemplate(id:number,name:string,fields:SpliceField[]){return data<void>(`/templates/${id}`,'PUT',{name,fields})}

/** 优先读取冻结字段结构；早期版本仅有字段名时保留原展示。 */
export function spliceFields(settings: SpliceSettings): SpliceField[] {
  return settings.fieldStructure ?? [
    ...(settings.batteryFields ?? []).map(name => ({ name, category: 'battery' as const, displayName: name, unit: '' })),
    ...(settings.specialFields ?? []).map(name => ({ name, category: 'special' as const, displayName: name, unit: '' })),
  ]
}
/** 人工填写优先；未填写时取首个来源的冻结共享字段，空字符串仍视为人工值。 */
export function spliceFieldValue(segments: SpliceSegment[], settings: SpliceSettings, field: SpliceField, battery: string) {
  const manual = settings.detailFieldValues?.[field.name]?.[battery]
  if (manual !== undefined) return manual
  const business = segments.find(segment => segment.source.batteryNo === battery)?.businessFields?.find(value =>
    field.fieldDefinitionId ? field.fieldDefinitionId === value.fieldDefinitionId : field.name === value.fieldName)
  return field.category === 'battery' ? business?.fieldValue ?? '' : ''
}
/** 新版列身份包含测试与测试电池；空字符串不回退为组字段或其他列。 */
export function spliceSourceKey(source: SpliceCandidate) { return `${source.selection.testId}|${source.selection.testBatteryId}` }
export function spliceSourceValue(segment: SpliceSegment, settings: SpliceSettings, field: SpliceField) {
  const manual = settings.detailFieldValues?.[field.name]?.[spliceSourceKey(segment.source)]
  if (manual !== undefined) return manual
  // 独立详情版本中模板仅使用明确共享身份；来源人工详情由专用区域呈现。
  if (settings.sourceDetailOverrides !== undefined) return field.fieldDefinitionId ? segment.businessFields?.find(value => value.fieldDefinitionId === field.fieldDefinitionId)?.fieldValue ?? '' : ''
  // 控制台详情只有名称，没有共享字段身份；模板字段一旦带 ID，必须按 ID 取组值，不能被同名详情冒认。
  if (field.fieldDefinitionId) {
    return segment.businessFields?.find(value => value.fieldDefinitionId === field.fieldDefinitionId)?.fieldValue ?? ''
  }
  const detail = segment.consoleDetail?.fieldValues[field.name]
  if (detail !== undefined) return detail
  if (segment.consoleDetail?.batteryFields.includes(field.name) || segment.consoleDetail?.specialFields.includes(field.name)) return ''
  return ''
}
/** 来源详情按分类和名称保持原结构；更新来源取消字段时仍保留已经人工改过的格。 */
export function spliceSourceFields(segments: SpliceSegment[], overrides: SpliceSettings['sourceDetailOverrides']) {
  const fields = segments.flatMap(segment => (['battery', 'special'] as const).flatMap(category =>
    (segment.consoleDetail?.[category === 'battery' ? 'batteryFields' : 'specialFields'] || [])
      .map(name => ({ key: `${category}|${name}`, name, category }))))
  for (const segment of segments) for (const key of Object.keys(overrides?.[spliceSourceKey(segment.source)]?.fieldValues || {})) {
    const category = key.startsWith('battery|') ? 'battery' : 'special'
    fields.push({ key, name: key.slice(category.length + 1), category })
  }
  return [...new Map(fields.map(field => [field.key, field])).values()]
}
/** 明确空字符串优先，缺失来源格不借用同名共享字段或其他电池值。 */
export function spliceDetailValue(segment: SpliceSegment, overrides: SpliceSettings['sourceDetailOverrides'], field?: ReturnType<typeof spliceSourceFields>[number]) {
  const manual = overrides?.[spliceSourceKey(segment.source)]
  if (!field) return manual?.experimentName ?? segment.consoleDetail?.experimentName ?? ''
  if (manual?.fieldValues?.[field.key] !== undefined) return manual.fieldValues[field.key]!
  const names = segment.consoleDetail?.[field.category === 'battery' ? 'batteryFields' : 'specialFields'] || []
  return names.includes(field.name) ? segment.consoleDetail?.fieldValues[field.name] ?? '' : ''
}
export function spliceExperiment(segment: SpliceSegment, settings: SpliceSettings) {
  return settings.sourceExperimentNames?.[spliceSourceKey(segment.source)] ?? segment.consoleDetail?.experimentName ?? ''
}
/** 人工统计绑定测试电池和原循环身份，来源重排不改变归属。 */
export function spliceStatisticKey(segment: SpliceSegment, cycle: number, metric: string) {
  return `${segment.source.selection.testId}|${segment.source.selection.testBatteryId}|${cycle}|${metric}`
}