package tools

import (
	"context"
	"encoding/json"
	"fmt"

	"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 RepoUpdate struct {
	c *gitea.Client
	a *allowlist.Allowlist
}

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

func (t *RepoUpdate) Descriptor() registry.ToolDescriptor {
	return registry.ToolDescriptor{
		Name:        "repo_update",
		Description: "Update repository metadata (description, visibility, default branch, website).",
		InputSchema: json.RawMessage(`{
			"type":"object",
			"properties":{
				"owner":{"type":"string"},
				"name":{"type":"string"},
				"description":{"type":"string"},
				"private":{"type":"boolean"},
				"website":{"type":"string"},
				"default_branch":{"type":"string"},
				"confirm":{"type":"string","description":"Required when setting private=false. Must equal the repo name."}
			},
			"required":["owner","name"]
		}`),
	}
}

type repoUpdateArgs struct {
	Owner         string  `json:"owner"`
	Name          string  `json:"name"`
	Description   *string `json:"description"`
	Private       *bool   `json:"private"`
	Website       *string `json:"website"`
	DefaultBranch *string `json:"default_branch"`
	Confirm       string  `json:"confirm"`
}

func (t *RepoUpdate) Call(ctx context.Context, raw json.RawMessage) (json.RawMessage, error) {
	var args repoUpdateArgs
	if err := parseArgs(raw, &args); err != nil {
		return nil, err
	}
	if err := t.a.Check(args.Owner); err != nil {
		return nil, err
	}
	// Making a repo public is a significant action — require explicit confirmation.
	if args.Private != nil && !*args.Private {
		if args.Confirm != args.Name {
			return nil, fmt.Errorf("setting private=false makes the repo public: set confirm=%q to proceed", args.Name)
		}
	}
	r, err := t.c.UpdateRepo(ctx, args.Owner, args.Name, gitea.UpdateRepoArgs{
		Description:   args.Description,
		Private:       args.Private,
		Website:       args.Website,
		DefaultBranch: args.DefaultBranch,
	})
	if err != nil {
		return nil, err
	}
	return textOK(r)
}