package models

import (
	"fmt"

	"odoo-go/pkg/orm"
)

// initIrCron registers ir.cron — Scheduled actions.
// Mirrors: odoo/addons/base/models/ir_cron.py class IrCron
//
// Defines recurring tasks executed by the scheduler.
func initIrCron() {
	m := orm.NewModel("ir.cron", orm.ModelOpts{
		Description: "Scheduled Actions",
		Order:       "name",
	})

	m.AddFields(
		orm.Char("name", orm.FieldOpts{String: "Name", Required: true}),
		orm.Boolean("active", orm.FieldOpts{String: "Active", Default: true}),
		orm.Many2one("user_id", "res.users", orm.FieldOpts{String: "User", Required: true}),
		orm.Integer("interval_number", orm.FieldOpts{String: "Interval Number", Default: 1}),
		orm.Selection("interval_type", []orm.SelectionItem{
			{Value: "minutes", Label: "Minutes"},
			{Value: "hours", Label: "Hours"},
			{Value: "days", Label: "Days"},
			{Value: "weeks", Label: "Weeks"},
			{Value: "months", Label: "Months"},
		}, orm.FieldOpts{String: "Interval Type", Default: "months"}),
		orm.Integer("numbercall", orm.FieldOpts{String: "Number of Calls", Default: -1}),
		orm.Datetime("nextcall", orm.FieldOpts{String: "Next Execution Date", Required: true}),
		orm.Datetime("lastcall", orm.FieldOpts{String: "Last Execution Date"}),
		orm.Integer("priority", orm.FieldOpts{String: "Priority", Default: 5}),
		orm.Char("code", orm.FieldOpts{String: "Python Code"}),
		orm.Many2one("model_id", "ir.model", orm.FieldOpts{String: "Model"}),

		// Execution target (simplified: direct model+method instead of ir.actions.server)
		orm.Char("model_name", orm.FieldOpts{String: "Model Name"}),
		orm.Char("method_name", orm.FieldOpts{String: "Method Name"}),

		// Failure tracking
		orm.Integer("failure_count", orm.FieldOpts{String: "Failure Count", Default: 0}),
		orm.Datetime("first_failure_date", orm.FieldOpts{String: "First Failure Date"}),
	)

	// Constraint: validate model_name and method_name against the registry.
	// Prevents setting arbitrary/invalid model+method combos on cron jobs.
	m.AddConstraint(func(rs *orm.Recordset) error {
		records, err := rs.Read([]string{"model_name", "method_name"})
		if err != nil || len(records) == 0 {
			return nil
		}
		rec := records[0]
		modelName, _ := rec["model_name"].(string)
		methodName, _ := rec["method_name"].(string)
		if modelName == "" && methodName == "" {
			return nil // both empty is OK (legacy code-based crons)
		}
		if modelName != "" {
			model := orm.Registry.Get(modelName)
			if model == nil {
				return fmt.Errorf("ir.cron: model %q not found in registry", modelName)
			}
			if methodName != "" && model.Methods != nil {
				if _, ok := model.Methods[methodName]; !ok {
					return fmt.Errorf("ir.cron: method %q not found on model %q", methodName, modelName)
				}
			}
		}
		return nil
	})

	// method_direct_trigger — manually trigger a cron job.
	// Mirrors: odoo/addons/base/models/ir_cron.py method_direct_trigger
	m.RegisterMethod("method_direct_trigger", func(rs *orm.Recordset, args ...interface{}) (interface{}, error) {
		// Admin-only: only uid=1 or superuser may trigger cron jobs directly
		env := rs.Env()
		if env.UID() != 1 && !env.IsSuperuser() {
			return nil, fmt.Errorf("ir.cron: method_direct_trigger requires admin privileges")
		}

		records, err := rs.Read([]string{"model_name", "method_name"})
		if err != nil {
			return nil, fmt.Errorf("ir.cron: method_direct_trigger read failed: %w", err)
		}
		if len(records) == 0 {
			return nil, fmt.Errorf("ir.cron: method_direct_trigger: no record found")
		}

		rec := records[0]
		modelName, _ := rec["model_name"].(string)
		methodName, _ := rec["method_name"].(string)

		if modelName == "" || methodName == "" {
			return nil, fmt.Errorf("ir.cron: model_name or method_name not set")
		}

		// Validate model_name against registry (prevents calling arbitrary models)
		model := orm.Registry.Get(modelName)
		if model == nil {
			return nil, fmt.Errorf("ir.cron: model %q not found in registry", modelName)
		}
		if model.Methods == nil {
			return nil, fmt.Errorf("ir.cron: model %q has no methods", modelName)
		}
		method, ok := model.Methods[methodName]
		if !ok {
			return nil, fmt.Errorf("ir.cron: method %q not found on model %q", methodName, modelName)
		}

		result, err := method(env.Model(modelName), args...)
		if err != nil {
			return nil, fmt.Errorf("ir.cron: %s.%s failed: %w", modelName, methodName, err)
		}

		return result, nil
	})
}