import type { Argv, ArgumentsCamelCase } from "yargs"
import { CLICommand } from "../cli/CLICommand"
import { parseTodoFile, writeTodoFile } from "../file"
import { getCurrentBranch, commitFile } from "../git"
import type { IssueType, IssuePriority } from "../issue"

export class CreateCommand extends CLICommand {
  readonly name = "create"
  readonly help = "Create a new issue"
  readonly description = "Add an issue to the TODO file (must be on develop)"

  addArguments(yargs: Argv): Argv {
    return yargs
      .option("type", {
        alias: "t",
        type: "string",
        choices: ["feature", "bugfix", "hotfix"] as const,
        demandOption: true,
      })
      .option("title", {
        type: "string",
        demandOption: true,
      })
      .option("priority", {
        alias: "p",
        type: "string",
        choices: ["low", "medium", "high"] as const,
        default: "medium",
      })
      .option("plan", {
        type: "string",
        demandOption: true,
        description: "Description of what needs to be done",
      })
      .option("module", {
        alias: "m",
        type: "string",
      })
  }

  async execute(args: ArgumentsCamelCase): Promise<number> {
    const branch = getCurrentBranch()
    if (branch !== "develop") {
      console.error(`Must be on develop to create issues (currently on ${branch})`)
      return 1
    }

    const todo = await parseTodoFile()

    const mod = args.module as string | undefined
    if (mod && todo.modules) {
      const valid = todo.modules.map(m => m.name)
      if (!valid.includes(mod)) {
        console.error(`Module "${mod}" not defined. Valid: ${valid.join(", ")}`)
        return 1
      }
    }

    const nextId = todo.issues.length > 0
      ? Math.max(...todo.issues.map(i => i.id)) + 1
      : 1

    const today = new Date().toISOString().slice(0, 10)

    todo.issues.push({
      id: nextId,
      type: args.type as IssueType,
      title: args.title as string,
      status: "open",
      priority: args.priority as IssuePriority,
      created: today,
      module: mod,
      relationships: {},
      description: args.plan as string,
      body: "",
    })

    writeTodoFile(todo)
    commitFile("TODO", `todo(${nextId}): open`)
    console.log(`Created issue #${nextId}: ${args.title}`)
    return 0
  }
}