package tools

import (
	"context"
	"encoding/json"

	"gitea.d-ma.be/mathias/gitea-mcp/internal/allowlist"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/gitea"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/registry"
)

type WorkflowRunList struct {
	c *gitea.Client
	a *allowlist.Allowlist
}

func NewWorkflowRunList(c *gitea.Client, a *allowlist.Allowlist) *WorkflowRunList {
	return &WorkflowRunList{c: c, a: a}
}

func (t *WorkflowRunList) Descriptor() registry.ToolDescriptor {
	return registry.ToolDescriptor{
		Name:        "workflow_run_list",
		Description: "List recent Gitea Actions workflow runs with optional filters (branch, head_sha, status, event, workflow).",
		InputSchema: json.RawMessage(`{
			"type":"object",
			"properties":{
				"owner":{"type":"string"},
				"name":{"type":"string"},
				"branch":{"type":"string"},
				"head_sha":{"type":"string"},
				"status":{"type":"string","enum":["queued","in_progress","completed","all"]},
				"event":{"type":"string","enum":["push","pull_request","schedule","workflow_dispatch","all"]},
				"workflow":{"type":"string"},
				"page":{"type":"integer","minimum":1},
				"limit":{"type":"integer","minimum":1,"maximum":50}
			},
			"required":["owner","name"]
		}`),
	}
}

type workflowRunListArgs struct {
	Owner    string `json:"owner"`
	Name     string `json:"name"`
	Branch   string `json:"branch"`
	HeadSHA  string `json:"head_sha"`
	Status   string `json:"status"`
	Event    string `json:"event"`
	Workflow string `json:"workflow"`
	Page     int    `json:"page"`
	Limit    int    `json:"limit"`
}

func (t *WorkflowRunList) Call(ctx context.Context, raw json.RawMessage) (json.RawMessage, error) {
	var args workflowRunListArgs
	if err := parseArgs(raw, &args); err != nil {
		return nil, err
	}
	if err := t.a.Check(args.Owner); err != nil {
		return nil, err
	}
	args.Limit = capLimit(args.Limit, 10)
	if args.Page < 1 {
		args.Page = 1
	}
	resp, err := t.c.ListWorkflowRuns(ctx, args.Owner, args.Name, gitea.ListWorkflowRunsArgs{
		Branch:   args.Branch,
		HeadSHA:  args.HeadSHA,
		Status:   args.Status,
		Event:    args.Event,
		Workflow: args.Workflow,
		Page:     args.Page,
		Limit:    args.Limit,
	})
	if err != nil {
		return nil, err
	}
	out := map[string]any{
		"runs":  resp.WorkflowRuns,
		"total": resp.TotalCount,
	}
	if len(resp.WorkflowRuns) == args.Limit {
		out["next_page"] = args.Page + 1
	}
	return textOK(out)
}