package data

import (
	"context"

	"github.com/mark3labs/mcp-go/mcp"

	"fwh-toolbox-server/cmd/mcp/tools/helper"
	"fwh-toolbox-server/repositories"
)

// planeRawResult 将 Plane API 返回的原始 JSON bytes 转为 MCP 结果。
// 原始字节先经流式 PII 脱敏（优化 B），脱敏失败（含非法 JSON）则返回错误、拒绝输出。
func planeRawResult(data []byte, err error, action string) (*mcp.CallToolResult, error) {
	if err != nil {
		return helper.ServiceError(action, err), nil
	}
	return helper.BytesResultOrFileMasked(data, "plane_"+action), nil
}

// === Project Handlers ===

func handlePlaneListProjects(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListProjects()
	return planeRawResult(data, err, "列出项目")
}

func handlePlaneGetProject(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	projectID, err := req.RequireString("project_id")
	if err != nil {
		return helper.ParamError("project_id"), nil
	}
	data, apiErr := repositories.PlaneGetProject(projectID)
	return planeRawResult(data, apiErr, "获取项目详情")
}

func handlePlaneGetProjectSummary(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	projectID, err := req.RequireString("project_id")
	if err != nil {
		return helper.ParamError("project_id"), nil
	}
	fields := req.GetString("fields", "")
	data, apiErr := repositories.PlaneGetProjectSummary(projectID, fields)
	return planeRawResult(data, apiErr, "获取项目摘要")
}

// === Work Item Handlers ===

func handlePlaneListWorkItems(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	params := make(map[string]string)
	if v := req.GetString("state", ""); v != "" {
		params["state"] = v
	}
	if v := req.GetString("priority", ""); v != "" {
		params["priority"] = v
	}
	if v := req.GetString("assignee", ""); v != "" {
		params["assignee"] = v
	}
	if v := req.GetString("label", ""); v != "" {
		params["label"] = v
	}
	data, err := repositories.PlaneListWorkItems(params)
	return planeRawResult(data, err, "列出工作项")
}

func handlePlaneGetWorkItem(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneGetWorkItem(id)
	return planeRawResult(data, apiErr, "获取工作项详情")
}

func handlePlaneGetWorkItemByIdentifier(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	identifier, err := req.RequireString("identifier")
	if err != nil {
		return helper.ParamError("identifier"), nil
	}
	seqID := int(req.GetFloat("sequence_id", 0))
	if seqID <= 0 {
		return helper.ParamError("sequence_id"), nil
	}
	data, apiErr := repositories.PlaneGetWorkItemByIdentifier(identifier, seqID)
	return planeRawResult(data, apiErr, "通过标识符获取工作项")
}

func handlePlaneSearchWorkItems(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	query, err := req.RequireString("query")
	if err != nil {
		return helper.ParamError("query"), nil
	}
	limit := int(req.GetFloat("limit", 20))
	data, apiErr := repositories.PlaneSearchWorkItems(query, limit, "")
	return planeRawResult(data, apiErr, "搜索工作项")
}

// === Cycle Handlers ===

func handlePlaneListCycles(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListCycles()
	return planeRawResult(data, err, "列出迭代")
}

func handlePlaneGetCycle(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("cycle_id")
	if err != nil {
		return helper.ParamError("cycle_id"), nil
	}
	data, apiErr := repositories.PlaneGetCycle(id)
	return planeRawResult(data, apiErr, "获取迭代详情")
}

func handlePlaneListCycleIssues(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("cycle_id")
	if err != nil {
		return helper.ParamError("cycle_id"), nil
	}
	data, apiErr := repositories.PlaneListCycleIssues(id)
	return planeRawResult(data, apiErr, "列出迭代工作项")
}

// === Module Handlers ===

func handlePlaneListModules(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListModules()
	return planeRawResult(data, err, "列出模块")
}

func handlePlaneGetModule(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("module_id")
	if err != nil {
		return helper.ParamError("module_id"), nil
	}
	data, apiErr := repositories.PlaneGetModule(id)
	return planeRawResult(data, apiErr, "获取模块详情")
}

func handlePlaneListModuleIssues(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("module_id")
	if err != nil {
		return helper.ParamError("module_id"), nil
	}
	data, apiErr := repositories.PlaneListModuleIssues(id)
	return planeRawResult(data, apiErr, "列出模块工作项")
}

// === State / Label / Member Handlers ===

func handlePlaneListStates(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListStates()
	return planeRawResult(data, err, "列出状态")
}

func handlePlaneListLabels(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListLabels()
	return planeRawResult(data, err, "列出标签")
}

func handlePlaneListWorkspaceMembers(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListWorkspaceMembers()
	return planeRawResult(data, err, "列出工作空间成员")
}

func handlePlaneListProjectMembers(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneListProjectMembers()
	return planeRawResult(data, err, "列出项目成员")
}

// === Comment / Activity / Link / Attachment / Relation Handlers ===

func handlePlaneListWorkItemComments(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneListWorkItemComments(id)
	return planeRawResult(data, apiErr, "列出评论")
}

func handlePlaneListWorkItemActivities(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneListWorkItemActivities(id)
	return planeRawResult(data, apiErr, "列出活动历史")
}

func handlePlaneListWorkItemLinks(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneListWorkItemLinks(id)
	return planeRawResult(data, apiErr, "列出链接")
}

func handlePlaneListWorkItemAttachments(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneListWorkItemAttachments(id)
	return planeRawResult(data, apiErr, "列出附件")
}

func handlePlaneListWorkItemRelations(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("work_item_id")
	if err != nil {
		return helper.ParamError("work_item_id"), nil
	}
	data, apiErr := repositories.PlaneListWorkItemRelations(id)
	return planeRawResult(data, apiErr, "列出关系")
}

// === Intake Handlers ===

func handlePlaneGetIntakeIssueList(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	data, err := repositories.PlaneGetIntakeIssueList()
	if err != nil {
		return helper.ServiceError("查询Intake列表", err), nil
	}
	return helper.JSONResult(data), nil
}

func handlePlaneGetIntakeIssueDetail(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	id, err := req.RequireString("intake_id")
	if err != nil {
		return helper.ParamError("intake_id"), nil
	}
	data, apiErr := repositories.PlaneGetIntakeIssueDetail(id)
	return planeRawResult(data, apiErr, "获取Intake详情")
}

// === V2 Web API: Page Handlers (已迁移到 plane_v2_api_handlers.go) ===