package bizdev

import (
	"fmt"
	"strings"

	"chat-agent-system/internal/squad"
)

// Terminal task statuses projected to chat / workflow_runs.
const (
	TaskStatusCompleted                 = "completed"
	TaskStatusFailed                    = "failed"
	TaskStatusQualityFailed             = "quality_failed"
	TaskStatusPendingAuthorConfirmation = "pending_author_confirmation"
)

// AwaitsAgentConfirmation reports high/critical revision candidate awaiting author decision.
// Distinct from DocGov change-proposal intercept (PendingProposal).
func (r *TaskRunResult) AwaitsAgentConfirmation() bool {
	return r != nil && r.PendingAgentCandidateID > 0
}

// IsProposalIntercept reports claimed-document DocGov change-proposal interception.
func (r *TaskRunResult) IsProposalIntercept() bool {
	return r != nil && r.PendingProposal != nil && r.RequiresAuthorApproval
}

// TerminalStatus maps TaskRunResult to a conversation/workflow terminal status.
// Pending agent confirmation is never "completed" until commit+projection.
// Quality failure stays quality_failed even when Success was cleared to block Materialize.
func (r *TaskRunResult) TerminalStatus() string {
	if r == nil {
		return TaskStatusFailed
	}
	if r.QualityReport != nil && !r.QualityReport.Passed {
		return TaskStatusQualityFailed
	}
	if !r.Success {
		return TaskStatusFailed
	}
	if r.AwaitsAgentConfirmation() {
		return TaskStatusPendingAuthorConfirmation
	}
	return TaskStatusCompleted
}

// CompletionSummary builds the assistant-visible completion text for sync and async finalizers.
func (r *TaskRunResult) CompletionSummary() string {
	if r == nil {
		return "任务执行失败。"
	}
	title := r.ArtifactTitle
	if title == "" && r.TaskKey != "" {
		title = squad.TaskArtifactTitle(r.TaskKey)
	}
	if title == "" {
		title = "交付文档"
	}

	status := r.TerminalStatus()
	var b strings.Builder

	switch status {
	case TaskStatusPendingAuthorConfirmation:
		fmt.Fprintf(&b, "《%s》文档候选已生成，待编制人确认。\n\n", title)
		b.WriteString("当前状态：**待编制人确认**")
		if r.PendingRiskLevel != "" {
			fmt.Fprintf(&b, "（风险：%s）", r.PendingRiskLevel)
		}
		b.WriteString("\n正式正文仍为账本当前 head；候选正文仅保留在不可变快照中。请打开文档「待确认报告」确认提交或拒绝后，正式正文才会更新。")
		if r.PendingConfirmationNote != "" {
			fmt.Fprintf(&b, "\n%s", r.PendingConfirmationNote)
		}
		fmt.Fprintf(&b, "\n候选 ID：%d", r.PendingAgentCandidateID)
		if r.PendingChangeReportID > 0 {
			fmt.Fprintf(&b, " · 变更报告：%d", r.PendingChangeReportID)
		}
	case TaskStatusQualityFailed:
		fmt.Fprintf(&b, "《%s》已生成。\n\n", title)
		b.WriteString("当前状态：**质量检查未通过，待整改**")
		if r.QualityReport != nil {
			fmt.Fprintf(&b, "\n质量评分：%.0f/100", r.QualityReport.Score)
			if len(r.QualityReport.Violations) > 0 {
				fmt.Fprintf(&b, "\n主要问题：%s", strings.Join(r.QualityReport.Violations, "；"))
			}
		}
	case TaskStatusCompleted:
		fmt.Fprintf(&b, "《%s》已生成。\n\n", title)
		b.WriteString("当前状态：**已完成**")
		if r.QualityReport != nil && r.QualityReport.Passed {
			fmt.Fprintf(&b, "\n质量评分：%.0f/100", r.QualityReport.Score)
		}
		if r.DocRecord == nil && controlledDeliverableRequiresProject(r.TaskKey) {
			b.WriteString("\n交付物已生成于工作区，尚未写入受控文档账本。")
		}
	default:
		fmt.Fprintf(&b, "《%s》未成功落盘。\n\n", title)
		if r.ErrorReason != "" {
			fmt.Fprintf(&b, "执行未成功：%s", r.ErrorReason)
		} else {
			b.WriteString("任务执行失败。")
		}
	}

	if r.DocRecord != nil && r.DocRecord.DocID != "" {
		fmt.Fprintf(&b, "\n\n📄 受控文档：`%s`", r.DocRecord.DocID)
	}
	return b.String()
}

// ArtifactMetadata returns chat metadata fields for a clickable document entry.
func (r *TaskRunResult) ArtifactMetadata() map[string]any {
	if r == nil {
		return nil
	}
	docID := ""
	if r.DocRecord != nil {
		docID = r.DocRecord.DocID
	}
	if docID == "" {
		return nil
	}
	title := r.ArtifactTitle
	if title == "" && r.TaskKey != "" {
		title = squad.TaskArtifactTitle(r.TaskKey)
	}
	out := map[string]any{
		"doc_id":   docID,
		"title":    title,
		"task_key": r.TaskKey,
	}
	if r.WorkDir != "" {
		out["workspace_id"] = r.WorkDir
	}
	if r.DocRecord != nil && r.DocRecord.ContentSHA256 != "" {
		out["sha256"] = r.DocRecord.ContentSHA256
	}
	if r.QualityReport != nil {
		out["quality_passed"] = r.QualityReport.Passed
		out["quality_score"] = r.QualityReport.Score
		if len(r.QualityReport.Violations) > 0 {
			out["quality_violations"] = r.QualityReport.Violations
		}
	}
	if r.AwaitsAgentConfirmation() {
		out["pending_agent_candidate_id"] = r.PendingAgentCandidateID
		if r.PendingChangeReportID > 0 {
			out["pending_change_report_id"] = r.PendingChangeReportID
		}
		if r.PendingRiskLevel != "" {
			out["pending_risk_level"] = r.PendingRiskLevel
		}
		out["awaiting_author_confirmation"] = true
	}
	return out
}