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 IssueGet struct {
	c *gitea.Client
	a *allowlist.Allowlist
}

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

func (t *IssueGet) Descriptor() registry.ToolDescriptor {
	return registry.ToolDescriptor{
		Name:        "issue_get",
		Description: "Get a single issue by number, including body, state, labels, assignees, and comment count.",
		InputSchema: json.RawMessage(`{
			"type":"object",
			"properties":{
				"owner":{"type":"string"},
				"name":{"type":"string"},
				"number":{"type":"integer","minimum":1}
			},
			"required":["owner","name","number"]
		}`),
	}
}

type issueGetArgs struct {
	Owner  string `json:"owner"`
	Name   string `json:"name"`
	Number int    `json:"number"`
}

func (t *IssueGet) Call(ctx context.Context, raw json.RawMessage) (json.RawMessage, error) {
	var args issueGetArgs
	if err := parseArgs(raw, &args); err != nil {
		return nil, err
	}
	if err := t.a.Check(args.Owner); err != nil {
		return nil, err
	}
	iss, err := t.c.GetIssue(ctx, args.Owner, args.Name, args.Number)
	if err != nil {
		return nil, err
	}
	return textOK(iss)
}